text:
VHDL

VHDL (VHSIC Hardware Description Language) is a hardware description language that can model the behavior and structure of digital systems at multiple levels of abstraction, ranging from the system level down to that of logic gates, for design entry, documentation, and verification purposes. The language was developed for the US military VHSIC program in the 1980s, and has been standardized by the Institute of Electrical and Electronics Engineers (IEEE) as IEEE Std 1076; the latest version of which is IEEE Std 1076-2019. To model analog and mixed-signal systems, an IEEE-standardized HDL based on VHDL called VHDL-AMS (officially IEEE 1076.1) has been developed.

History
In 1983, VHDL was originally developed at the behest of the U.S. Department of Defense in order to document the behavior of the ASICs that supplier companies were including in equipment. The standard MIL-STD-454N in Requirement 64 in section 4.5.1 "ASIC documentation in VHDL" explicitly requires documentation of "Microelectronic Devices" in VHDL.

The idea of being able to simulate the ASICs from the information in this documentation was so obviously attractive that logic simulators were developed that could read the VHDL files. The next step was the development of logic synthesis tools that read the VHDL and output a definition of the physical implementation of the circuit.

Due to the Department of Defense requiring as much of the syntax as possible to be based on Ada, in order to avoid re-inventing concepts that had already been thoroughly tested in the development of Ada, VHDL borrows heavily from the Ada programming language in both concept and syntax.

The initial version of VHDL, designed to IEEE standard IEEE 1076-1987, included a wide range of data types, including numerical (integer and real), logical (bit and boolean), character and time, plus arrays of  called   and of   called string.

A problem not solved by this edition, however, was "multi-valued logic", where a signal's drive strength (none, weak or strong) and unknown values are also considered. This required IEEE standard 1164, which defined the 9-value logic types: scalar  and its vector version. Being a resolved subtype of its  parent type,  -typed signals allow multiple driving for modeling bus structures, whereby the connected resolution function handles conflicting assignments adequately.

The updated IEEE 1076, in 1993, made the syntax more consistent, allowed more flexibility in naming, extended the  type to allow ISO-8859-1 printable characters, added the   operator, etc.

Minor changes in the standard (2000 and 2002) added the idea of protected types (similar to the concept of class in C++) and removed some restrictions from port mapping rules.

In addition to IEEE standard 1164, several child standards were introduced to extend functionality of the language. IEEE standard 1076.2 added better handling of real and complex data types. IEEE standard 1076.3 introduced signed and unsigned types to facilitate arithmetical operations on vectors. IEEE standard 1076.1 (known as VHDL-AMS) provided analog and mixed-signal circuit design extensions.

Some other standards support wider use of VHDL, notably VITAL (VHDL Initiative Towards ASIC Libraries) and microwave circuit design extensions.

In June 2006, the VHDL Technical Committee of Accellera (delegated by IEEE to work on the next update of the standard) approved so-called Draft 3.0 of VHDL-2006. While maintaining full compatibility with older versions, this proposed standard provides numerous extensions that make writing and managing VHDL code easier. Key changes include incorporation of child standards (1164, 1076.2, 1076.3) into the main 1076 standard, an extended set of operators, more flexible syntax of case and generate statements, incorporation of VHPI (VHDL Procedural Interface) (interface to C/C++ languages) and a subset of PSL (Property Specification Language). These changes should improve quality of synthesizable VHDL code, make testbenches more flexible, and allow wider use of VHDL for system-level descriptions.

In February 2008, Accellera approved VHDL 4.0, also informally known as VHDL 2008, which addressed more than 90 issues discovered during the trial period for version 3.0 and includes enhanced generic types. In 2008, Accellera released VHDL 4.0 to the IEEE for balloting for inclusion in IEEE 1076-2008. The VHDL standard IEEE 1076-2008 was published in January 2009.

Standardization
The IEEE Standard 1076 defines the VHSIC Hardware Description Language, or VHDL. It was originally developed under contract F33615-83-C-1003 from the United States Air Force awarded in 1983 to a team of Intermetrics, Inc. as language experts and prime contractor, Texas Instruments as chip design experts and IBM as computer-system design experts. The language has undergone numerous revisions and has a variety of sub-standards associated with it that augment or extend it in important ways.

1076 was and continues to be a milestone in the design of electronic systems.

Revisions

 * IEEE 1076-1987 First standardized revision of ver 7.2 of the language from the United States Air Force.
 * IEEE 1076-1993 (also published with ISBN 1-55937-376-8). Significant improvements resulting from several years of feedback. Probably the most widely used version with the greatest vendor tool support.
 * IEEE 1076-2000. Minor revision. Introduces the use of protected types.
 * IEEE 1076-2002. Minor revision of 1076-2000. Rules with regard to buffer ports are relaxed.
 * IEC 61691-1-1:2004. IEC adoption of IEEE 1076-2002.
 * IEEE 1076c-2007. Introduced VHPI, the VHDL procedural interface, which provides software with the means to access the VHDL model. The VHDL language required minor modifications to accommodate the VHPI.
 * IEEE 1076-2008 (previously referred to as 1076-200x). Major revision released on 2009-01-26. Among other changes, this standard incorporates a basic subset of PSL, allows for generics on packages and subprograms and introduces the use of external names.
 * IEC 61691-1-1:2011. IEC adoption of IEEE 1076-2008.
 * IEEE 1076-2019. Major revision.

Related standards

 * IEEE 1076.1 VHDL Analog and Mixed-Signal (VHDL-AMS)
 * IEEE 1076.1.1 VHDL-AMS Standard Packages (stdpkgs)
 * IEEE 1076.2 VHDL Math Package
 * IEEE 1076.3 VHDL Synthesis Package (vhdlsynth) (numeric std)
 * IEEE 1076.3 VHDL Synthesis Package – Floating Point (fphdl)
 * IEEE 1076.4 Timing (VHDL Initiative Towards ASIC Libraries: vital)
 * IEEE 1076.6 VHDL Synthesis Interoperability (withdrawn in 2010)
 * IEEE 1164 VHDL Multivalue Logic (std_logic_1164) Packages

Design
VHDL is generally used to write text models that describe a logic circuit. Such a model is processed by a synthesis program, only if it is part of the logic design. A simulation program is used to test the logic design using simulation models to represent the logic circuits that interface to the design. This collection of simulation models is commonly called a testbench.

A VHDL simulator is typically an event-driven simulator. This means that each transaction is added to an event queue for a specific scheduled time. E.g. if a signal assignment should occur after 1 nanosecond, the event is added to the queue for time +1ns. Zero delay is also allowed, but still needs to be scheduled: for these cases delta delay is used, which represent an infinitely small time step. The simulation alters between two modes: statement execution, where triggered statements are evaluated, and event processing, where events in the queue are processed.

VHDL has constructs to handle the parallelism inherent in hardware designs, but these constructs (processes) differ in syntax from the parallel constructs in Ada (tasks). Like Ada, VHDL is strongly typed and is not case sensitive. In order to directly represent operations which are common in hardware, there are many features of VHDL which are not found in Ada, such as an extended set of Boolean operators including nand and nor.

VHDL has file input and output capabilities, and can be used as a general-purpose language for text processing, but files are more commonly used by a simulation testbench for stimulus or verification data. There are some VHDL compilers which build executable binaries. In this case, it might be possible to use VHDL to write a testbench to verify the functionality of the design using files on the host computer to define stimuli, to interact with the user, and to compare results with those expected. However, most designers leave this job to the simulator.

It is relatively easy for an inexperienced developer to produce code that simulates successfully but that cannot be synthesized into a real device, or is too large to be practical. One particular pitfall is the accidental production of transparent latches rather than D-type flip-flops as storage elements.

One can design hardware in a VHDL IDE (for FPGA implementation such as Xilinx ISE, Altera Quartus, Synopsys Synplify or Mentor Graphics HDL Designer) to produce the RTL schematic of the desired circuit. After that, the generated schematic can be verified using simulation software which shows the waveforms of inputs and outputs of the circuit after generating the appropriate testbench. To generate an appropriate testbench for a particular circuit or VHDL code, the inputs have to be defined correctly. For example, for clock input, a loop process or an iterative statement is required.

A final point is that when a VHDL model is translated into the "gates and wires" that are mapped onto a programmable logic device such as a CPLD or FPGA, then it is the actual hardware being configured, rather than the VHDL code being "executed" as if on some form of a processor chip.

Advantages
The key advantage of VHDL, when used for systems design, is that it allows the behavior of the required system to be described (modeled) and verified (simulated) before synthesis tools translate the design into real hardware (gates and wires).

Another benefit is that VHDL allows the description of a concurrent system. VHDL is a dataflow language in which every statement is considered for execution simultaneously, unlike procedural computing languages such as BASIC, C, and assembly code, where a sequence of statements is run sequentially one instruction at a time.

A VHDL project is multipurpose. Being created once, a calculation block can be used in many other projects. However, many formational and functional block parameters can be tuned (capacity parameters, memory size, element base, block composition and interconnection structure).

A VHDL project is portable. Being created for one element base, a computing device project can be ported on another element base, for example VLSI with various technologies.

A big advantage of VHDL compared to original Verilog is that VHDL has a full type system. Designers can use the type system to write much more structured code (especially by declaring record types).

Design examples
In VHDL, a design consists at a minimum of an entity which describes the interface and an architecture which contains the actual implementation. In addition, most designs import library modules. Some designs also contain multiple architectures and configurations.

A simple AND gate in VHDL would look something like

(Notice that  stands for Register transfer level design.) While the example above may seem verbose to HDL beginners, many parts are either optional or need to be written only once. Generally simple functions like this are part of a larger behavioral module, instead of having a separate module for something so simple. In addition, use of elements such as the  type might at first seem to be an overkill. One could easily use the built-in  type and avoid the library import in the beginning. However, using a form of many-valued logic, specifically 9-valued logic, instead of simple bits (0,1) offers a very powerful simulation and debugging tool to the designer which currently does not exist in any other HDL.

In the examples that follow, you will see that VHDL code can be written in a very compact form. However, more experienced designers usually avoid these compact forms and use a more verbose coding style for the sake of readability and maintainability.

Synthesizable constructs and VHDL templates
VHDL is frequently used for two different goals: simulation of electronic designs and synthesis of such designs. Synthesis is a process where a VHDL is compiled and mapped into an implementation technology such as an FPGA or an ASIC.

Not all constructs in VHDL are suitable for synthesis. For example, most constructs that explicitly deal with timing such as  are not synthesizable despite being valid for simulation. While different synthesis tools have different capabilities, there exists a common synthesizable subset of VHDL that defines what language constructs and idioms map into common hardware for many synthesis tools. IEEE 1076.6 defines a subset of the language that is considered the official synthesis subset. It is generally considered a "best practice" to write very idiomatic code for synthesis as results can be incorrect or suboptimal for non-standard constructs.

MUX template
The multiplexer, or 'MUX' as it is usually called, is a simple construct very common in hardware design. The example below demonstrates a simple two to one MUX, with inputs  and , selector   and output. Note that there are many other ways to express the same MUX in VHDL.

A more complex example of a MUX with 4x2 inputs and a 2-bit selector:

Latch template
A transparent latch is basically one bit of memory which is updated when an enable signal is raised. Again, there are many other ways this can be expressed in VHDL.

D-type flip-flops
The D-type flip-flop samples an incoming signal at the rising (or falling) edge of a clock. This example has an asynchronous, active-high reset, and samples at the rising clock edge.

Another common way to write edge-triggered behavior in VHDL is with the 'event' signal attribute. A single apostrophe has to be written between the signal name and the name of the attribute.

VHDL also lends itself to "one-liners" such as

or

or: Which can be useful if not all signals (registers) driven by this process should be reset.

Example: a counter
The following example is an up-counter with asynchronous reset, parallel load and configurable width. It demonstrates the use of the 'unsigned' type, type conversions between 'unsigned' and 'std_logic_vector' and VHDL generics. The generics are very close to arguments or templates in other traditional programming languages like C++. The example is in VHDL 2008 language.

More complex counters may add if/then/else statements within the  to add other functions, such as count enables, stopping or rolling over at some count value, generating output signals like terminal count signals, etc. Care must be taken with the ordering and nesting of such controls if used together, in order to produce the desired priorities and minimize the number of logic levels needed.

Simulation-only constructs
A large subset of VHDL cannot be translated into hardware. This subset is known as the non-synthesizable or the simulation-only subset of VHDL and can only be used for prototyping, simulation and debugging. For example, the following code will generate a clock with a frequency of 50 MHz. It can, for example, be used to drive a clock input in a design during simulation. It is, however, a simulation-only construct and cannot be implemented in hardware. In actual hardware, the clock is generated externally; it can be scaled down internally by user logic or dedicated hardware.

The simulation-only constructs can be used to build complex waveforms in very short time. Such waveform can be used, for example, as test vectors for a complex design or as a prototype of some synthesizer logic that will be implemented in the future.

Standard libraries
Also referred as standard packages.

IEEE Standard Package
The IEEE Standard Package includes the following:

 * numeric_std
 * std_logic_1164
 * std_logic_arith
 * std_logic_unsigned
 * std_logic_signed
 * std_logic_misc

VHDL simulators
Commercial: Other:
 * Aldec Active-HDL
 * Cadence Incisive
 * Mentor Graphics ModelSim
 * Mentor Graphics Questa Advanced Simulator
 * Synopsys VCS-MX
 * Xilinx Vivado Design Suite (features the Vivado Simulator)
 * EDA Playground - Free web browser-based VHDL IDE (uses Synopsys VCS, Cadence Incisive, Aldec Riviera-PRO and GHDL for VHDL simulation)
 * GHDL is an open source VHDL compiler that can execute VHDL programs.
 * boot by freerangefactory.org is a VHDL compiler and simulator based on GHDL and GTKWave
 * VHDL Simili by Symphony EDA is a free commercial VHDL simulator.
 * nvc by Nick Gasson is an open source VHDL compiler and simulator
 * freehdl by Edwin Naroska was an open source VHDL simulator, abandoned since 2001.

title: VHDL


text:
Very High Speed Integrated Circuit Program

The Very High Speed Integrated Circuit (VHSIC) Program was a United States Department of Defense (DOD) research program that ran from 1980 to 1990. Its mission was to research and develop very high-speed integrated circuits for the United States Armed Forces.

Program
VHSIC was launched in 1980 as a joint tri-service (Army/Navy/Air Force) program. The program led to advances in integrated circuit materials, lithography, packaging, testing, and algorithms, and created numerous computer-aided design (CAD) tools. A well-known part of the program's contribution is VHDL (VHSIC Hardware Description Language), a hardware description language (HDL). The program also redirected the military's interest in GaAs ICs back toward the commercial mainstream of CMOS circuits.

More than $1 billion in total was spent for the VHSIC program for silicon integrated circuit technology development.

A DARPA project which ran concurrently, the VLSI Project, having begun two years earlier in 1978, contributed BSD Unix, the RISC processor, the MOSIS research design fab, and greatly furthered the Mead and Conway revolution in VLSI design automation. By contrast, the VHSIC program was comparatively less cost-effective for the funds invested over a contemporaneous time frame, though the projects had different final objectives and are not entirely comparable for that reason.

By the time the program ended in 1990, commercial processors were far outperforming what the Pentagon's program had produced; however, it did manage to subsidize US semiconductor equipment manufacturing, stimulating an industry that shipped much of its product abroad (mainly to Asia).

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/


text:
Winchester

Winchester  is a cathedral city in Hampshire, England. The city lies at the heart of the wider City of Winchester, a local government district, at the western end of the South Downs National Park, on the River Itchen. It is 60 mi south-west of London and 14 mi from Southampton, its nearest city. At the 2021 census, the built-up area of Winchester had a population of 48,478. The wider City of Winchester district includes towns such as Alresford and Bishop's Waltham and had a population of 127,439 in 2021. Winchester is the county town of Hampshire and contains the head offices of Hampshire County Council.

Winchester developed from the Roman town of Venta Belgarum, which in turn developed from an Iron Age oppidum. Winchester was one of the most important cities in England until the Norman conquest in the eleventh century. It has since become one of the most expensive and affluent areas in the United Kingdom.

The city's major landmark is Winchester Cathedral. The city is also home to the University of Winchester and Winchester College, the oldest public school in the United Kingdom still using its original buildings.

Prehistory
The area around Winchester has been inhabited since prehistoric times, with three Iron Age hillforts, Oram's Arbour, St. Catherine's Hill, and Worthy Down all nearby. In the Late Iron Age, a more urban settlement type developed, known as an oppidum, although the archaeology of this phase remains obscure.

The settlement became an important centre for the British Belgae tribe; however, it remains unclear how the Belgae came to control the initial settlement. Caesar recorded the tribe had crossed the channel as raiders (probably in the 1st century BCE), only to later establish themselves. The Roman account of continental invaders has been challenged in recent years with scientific studies favouring a gradual change through increased trade links rather than migration.

To the Celtic Britons, the settlement was probably known as Wentā or Venta (from a common Celtic word meaning "tribal town" or "meeting place"). An etymology connected with the Celtic word for "white" (Modern Welsh gwyn) has been suggested, due to Winchester's situation upon chalk. It was the Latinised versions of this name, together with that of the tribe that gave the town its Roman name of Venta Belgarum.

Roman period
After the Roman conquest of Britain, the settlement served as the capital (civitas) of the Belgae and was distinguished as Venta Belgarum, "Venta of the Belgae". Although in the early years of the Roman province it was of subsidiary importance to Silchester and Chichester, Venta eclipsed them both by the latter half of the second century. At the beginning of the third century, Winchester was given protective stone walls. At around this time the city covered an area of 144 acres, making it among the largest towns in Roman Britain by surface area. There was a limited suburban area outside the walls. Like many other Roman towns however, Winchester began to decline in the later fourth century.

Post-Roman Winchester
Despite the Roman withdrawal from Britain, urban life continued much as it had done into the mid fifth century. The settlement reduced in size, but work was carried out to improve the city's defences. The city may have functioned as a centre for a religious community or a royal palace, as they continued to use the Christian cemeteries established in the Roman period.

Winchester appears in early Welsh literature and is commonly identified as the city of Cair Guinntguic listed among the 28 cities of Britain in the History of the Britons (commonly attributed to Nennius). The city is known as Caerwynt in Modern Welsh.

Between 476 and 517 AD, the town and surrounding areas seems to have been fortified by several Jutish settlements  and to have operated as part of a larger polity.

Kingdom of Wessex

The city became known as Wintanceaster ("Fort Venta") in Old English. In 648, King Cenwalh of Wessex erected the Church of St Peter and St Paul, later known as the Old Minster. This became a cathedral in the 660s when the West Saxon bishop's see was transferred from Dorchester on Thames. The present form of the city dates from reconstruction in the late 9th century, when King Alfred the Great obliterated the Roman street plan in favour of a new grid in order to provide better defence against the Vikings. The city's first mint appears to date from this period.

In the early 10th century there were two new ecclesiastical establishments: the convent of Nunnaminster, founded by Alfred's widow Ealhswith, and the New Minster. Bishop Æthelwold of Winchester was a leading figure in the monastic reform movement of the later 10th century. He expelled the secular canons of both minsters and replaced them with monks. He created the drainage system, the "Lockburn", which served as the town drain until 1875, and still survives. Also in the late 10th century, the Old Minster was enlarged as a centre of the cult of the 9th century Bishop of Winchester, Saint Swithun. The three minsters were the home of what architectural historian John Crook describes as "the supreme artistic achievements" of the Winchester School.

The consensus among historians of Anglo-Saxon England is that the court was mobile in this period and there was no fixed capital. Martin Biddle has suggested that Winchester was a centre for royal administration in the 7th and 8th centuries, but this is questioned by Barbara Yorke, who sees it as significant that the shire was named after Hamtun, the forerunner of Southampton. However, Winchester is described by the historian Catherine Cubitt as "the premier city of the West Saxon kingdom" and Janet Nelson describes London and Winchester as Alfred the Great's "proto-capitals".

There was a fire in the city in 1141 during the Rout of Winchester. In the 14th century, William of Wykeham played a role in the city's restoration. As Bishop of Winchester he was responsible for much of the current structure of the cathedral, and he founded the still extant public school Winchester College. During the Middle Ages, the city was an important centre of the wool trade, before going into a slow decline. The curfew bell in the bell tower (near the clock in the picture), still sounds at 8:00 pm each evening.

Jews in Winchester
Jews lived in Winchester from at least 1148, and in the 13th century the Jewish community in the city was one of the most important in England. There was an archa in the city, and the Jewish quarter was located in the city's heart (present day Jewry street). There were a series of blood libel claims against the Jewish community in the 1220s and 1230s, which was probably the cause of the hanging of the community's leader, Abraham Pinch, in front of the synagogue of which he was the head. Simon de Montfort ransacked the Jewish quarter in 1264, and in 1290 all Jews were expelled from England. A statue of Licoricia of Winchester, described as "the most important Jewish woman in medieval England", located in Jewry Street, was unveiled by the then Prince of Wales on 10 February 2022.

Modern period

The City Cross (also known as the Buttercross) has been dated to the 15th century, and features 12 statues of the Virgin Mary, other saints and various historical figures. Several statues appear to have been added throughout the structure's history. In 1770, Thomas Dummer purchased the Buttercross from the Corporation of Winchester, intending to have it re-erected at Cranbury Park, near Otterbourne. When his workmen arrived to dismantle the cross, they were prevented from doing so by the people of the city, who "organised a small riot", and they were forced to abandon their task. The agreement with the city was cancelled and Dummer erected a lath and plaster facsimile, which stood in the park for about sixty years before it was destroyed by the weather. The Buttercross itself was restored by George Gilbert Scott in 1865, and still stands in the High Street. It is now a Scheduled Ancient Monument. The city walls were originally built in the Roman period covering an area of around 138 acres, and were rebuilt and expanded in sections over time. A large portion of the city walls, built on Roman foundations, were demolished in the 18th and 19th centuries as they fell into ruin and the gates became a barrier to traffic and a danger to pedestrians, with only a small portion of the original Roman wall itself surviving. Of the six gates (North, South, East, West, Durn, and King's Gates), only the Kingsgate and Westgate survive, with sections of the walls remaining around the two gates and near the ruins of Wolvesey Castle.

Three notable bronze sculptures can be seen in or from the High Street by major sculptors of the 19th and 20th centuries, the earliest a monumental statue of Queen Victoria, now in the Great hall, by Sir Alfred Gilbert (also known as the sculptor of 'Eros' in London's Piccadilly Circus), King Alfred, facing the city with raised sword from the centre of The Broadway, by Hamo Thornycroft and the modern striking Horse and Rider by Dame Elizabeth Frink at the entrance to the Law Courts.

The novelist Jane Austen died in Winchester on 18 July 1817 and is buried in the cathedral. While staying in Winchester from mid-August to October 1819, the Romantic poet John Keats wrote "Isabella", "St. Agnes' Eve", "To Autumn", "Lamia" and parts of "Hyperion" and the five-act poetic tragedy "Otho The Great".

In 2013, businesses involved in the housing market were reported by a local newspaper as saying that the city's architectural and historical interest, and its fast links to other towns and cities, had led Winchester to become one of the most expensive and desirable areas of the country and ranked Winchester as one of the least deprived areas in England and Wales.

Geography
Winchester is situated on a bed of Cretaceous lower chalk with small areas of clay and loam soil, inset with combined clay and rich sources of fuller's earth.

Climate
As with the rest of the UK, Winchester experiences an oceanic climate (Köppen Cfb). The nearest Met Office station is in Martyr Worthy, just outside the city.

Governance
From 1835 to 1974, Winchester was governed as a municipal borough of Hampshire. Until 1902 the city's affairs were also administered partly by its parishes: St Lawrence, St Mary Kalendar, St Maurice, St Michael, St Peter Colebrook, St Swithin, St Thomas, St John, St Bartholomew Hyde, Milland, St Faith, and St Peter Cheesehill, and its extra-parochial areas: Cathedral Precincts, St Mary's College Precincts, St Cross Hospital Precinct, and Wolvesey. Historically, the south of the city had come under the "Liberty of the Soke", and was thereby self-governing to a large extent. Since 1974 the city has been governed as part of the wider City of Winchester district of Hampshire. The district has 16 electoral wards, Five of these cover the area of the city itself: St Barnabas, St Paul, St Luke, St Bartholomew, and St Michael; they have three councillors each apart from St Luke, which is a two-member ward. For Hampshire County Council elections, the City of Winchester district is made up of 7 divisions, with Winchester Westgate and Winchester Eastgate covering the city itself.

The current ward boundaries were adopted in 2016, when all seats were up for election. Since then, Winchester City Council elections take place in three out of every four years, with one third of the councillors elected in each election. From the 2006 election until the 2010 election the council was led by Conservatives. In 2010 it was controlled for a year by the Liberal Democrats, before being led again by the Conservatives from 2011 until 2019, since when the Liberal Democrats have again been in control.

Winchester is currently represented in the House of Commons by Danny Chambers, of the Liberal Democrats, who in the 2024 General Election beat Flick Drummond, the Conservative candidate, by 13,821 votes (a margin of 24.2%).

The Mayor of Winchester currently exists as a ceremonial role, but dates back at least as far as the late 12th century. The mayoral term length is currently one year.

Cathedral

Winchester Cathedral was originally built in 1079 and remains the longest Gothic cathedral in Europe. It contains much fine architecture spanning the 11th to the 16th centuries and is the place of interment of numerous Bishops of Winchester (such as William of Wykeham), Anglo-Saxon monarchs (such as Egbert of Wessex) and later monarchs such as King Canute and William Rufus. It was once an important pilgrimage centre and housed the shrine of Saint Swithun. The ancient Pilgrims' Way to Canterbury begins at Winchester. The plan of the earlier Old Minster is laid out in the grass adjoining the cathedral. The New Minster (the original burial place of Alfred the Great and Edward the Elder ) once stood beside it. The cathedral has a girls choir and a boys choir, who sing regularly in the cathedral.

Winchester Cathedral Close contains a number of historic buildings from the time when the cathedral was also a priory. Of particular note is the Deanery, which dates back to the 13th century. It was originally the Prior's House, and was the birthplace of Arthur, Prince of Wales in 1486. Not far away is Cheyney Court, a mid 15th-century timber-framed house incorporating the Porter's Lodge for the Priory Gate. It was the Bishop's court house.

The earliest hammer-beamed building still standing in England is situated in the Cathedral Close, next to the Dean's garden. It is known as the Pilgrims' Hall, as it was part of the hostelry used to accommodate the many pilgrims to Saint Swithun's shrine. Left-overs from the lavish banquets of the Priors (the monastic predecessors of the later Deans) would be given to the pilgrims, who were welcome to spend the night in the hall. It is thought by Winchester City Council to have been built in 1308. Now part of The Pilgrims' School, the hall is used by the school for assemblies in the morning, drama lessons, plays, orchestral practices, Cathedral Waynflete rehearsals, the school's Senior Commoners' Choir rehearsals etc.

Entrance for pedestrians to the North garth of the cathedral is via the Norman arches of Saint Maurice's tower, in the High Street.

Wolvesey Castle and Palace
Wolvesey Castle was the Norman bishop's palace, dating from 1110, but standing on the site of an earlier Saxon structure. It was enhanced by Henry de Blois during the Anarchy of his brother King Stephen's reign. He was besieged there for some days. In the 16th century, Queen Mary Tudor and King Philip II of Spain were guests just before their wedding in the cathedral. The building is now a ruin (maintained by English Heritage), but the chapel was incorporated into the new palace built in the 1680s, only one wing of which survives.

Castle
Winchester is well known for the Great Hall of its castle, which was built in the 12th century. The Great Hall was rebuilt sometime between 1222 and 1235, and still exists in this form. It is famous for King Arthur's Round Table, which has hung in the hall from at least 1463. The table actually dates from the 13th century, this it is still of considerable historical interest and attracts many tourists. The table was originally unpainted, but was painted for Henry VIII in 1522. The names of the legendary Knights of the Round Table are written around the edge of the table surmounted by King Arthur on his throne. Opposite the table are Prince Charles's 'Wedding Gates'. In the grounds of the Great Hall is a recreation of a medieval garden. Apart from the hall, only a few excavated remains of the stronghold survive among the modern Law Courts. The buildings were supplanted by the adjacent King's House, now incorporated into the Peninsula Barracks where there are five military museums. (The training that used to be carried out at the barracks is now done by the Army Training Regiment Winchester, based at the Sir John Moore Barracks, 2 mi outside the city).

Hospital of St Cross

The almshouses and vast Norman chapel of the Hospital of St Cross were founded just outside the city centre by Henry de Blois in the 1130s. Since at least the 14th century, and still available today, a 'wayfarer's dole' of ale and bread has been handed out there. It was supposedly instigated to aid pilgrims on their way to Canterbury.

City museum
The City Museum, located on the corner of Great Minster Street and The Square, contains much information on the history of Winchester. Early examples of Winchester measures of standard capacity are on display. The museum was one of the first purpose-built museums to be constructed outside London. Local items featured include the Roman Venta Belgarum gallery, and some genuine period shop interiors taken from the nearby High Street. Other places of cultural interest include the Westgate Museum (which showcases various items of weaponry), and the Historic Resources Centre, which holds many records related to the history of the city. In 2014 ownership of the City museum was transferred to the Hampshire Cultural Trust as part of a larger transfer of museums from Hampshire County Council and Winchester City Council.

Other buildings
Other historic buildings include the Guildhall dating from 1871 in the Gothic revival style, the Royal Hampshire County Hospital, designed by William Butterfield, and Winchester City Mill, one of the city's several water mills driven by the River Itchen that runs through the city centre. The mill has recently been restored, and is again milling corn by water power. It is owned by the National Trust.

Castle Hill is the location of the Council Chamber for Hampshire County Council.

Between Jewry Street and St Peter's Street is St Peter's Catholic Church. It was built in 1924 and designed by Frederick Walters. Next to it is Milner Hall, built in the 1780s it was the first Catholic church to be consecrated since 1558.

The old Victorian Corn Exchange is now used as a cultural hub.

Painted bollards

A series of 24 bollards on the corner of Great Minster Street and The Square were painted in the style of famous artists, or with topical scenes, by The Colour Factory between 2005 and 2012 at the behest of Winchester City Council.(51.062°N, -1.31525°W)

Primary schools
Winchester has a variety of Church of England primary schools, including both state and private provision schools. St Peters Catholic Primary School had the highest SATS results, after achieving a perfect score of 300 in 2011.

Secondary schools
There are four state comprehensive secondary schools in Winchester; the Henry Beaufort School, Kings' School Winchester, and The Westgate School are all situated in the city. A fourth state school, the Osborne School, a community special school is also located in Winchester.

Independent schools

Independent junior/preparatory schools are The Pilgrims' School Winchester, the Prince's Mead School and Twyford School, which is just outside the city and claims to be the oldest preparatory school in the United Kingdom. There are two major independent senior schools in Winchester, St Swithun's (a day and boarding school for girls from nursery to sixth form) and Winchester College, a boys' public school. Both schools often top the examination result tables for the city and county.

Special schools
Osborne School is a state-funded special school for pupils aged 11 to 19 which is located in Winchester. Shepherds Down Special School is a state funded special school for pupils aged 4 to 11, located just outside of the city in the boundaries of Compton.

Tertiary, further and higher education
The University of Winchester (formerly King Alfred's College) is a public university based in Winchester and the surrounding area. It is ranked 10th for teaching excellence in The Times and The Sunday Times 2016 Good University Guide, with a 92% rating, and fourth for student satisfaction in England in the National Student Survey 2015. The university origins go back as far as 1840, originally as a Diocesan teacher training centre. King Alfred's, the main campus, is located on a purpose-built campus near the city centre. The West Downs campus is a short walk away, and houses student facilities and accommodation and the business school.

The Winchester School of Art was founded in the 1860s as an independent institution and is now a school of the University of Southampton. The School of Art is complemented by the University of Southampton's Erasmus Park student accommodation in Winnall.

Peter Symonds College is a college that serves Winchester. It began as a Grammar school for boys in 1897, and became a co-educational sixth-form college in 1974.

Sport
Winchester has Winchester City FC who currently play in the Southern League and Winchester Castle FC, who have played in the Hampshire League since 1971. The local Saturday football league, the Winchester & District League, folded in 2010. The city also has a walking football club, Winchester Walking Football, which was established in April 2021 and plays at the University Sports Ground.

Winchester City Flyers are a girls and women's football club established in 1996 with nearly 200 members, playing from U9 to ladies football. They play in the Southern Region Women's Football League.

The St Cross Symondians Cricket Club is one of the first cricket clubs in Hampshire, and, with 5 men's sides, 2 women's sides, a successful junior's side, and weekend sides, is one of the largest as well.

Winchester has a rugby union team, Winchester RFC, and an athletics club, Winchester and District AC. The city has a field hockey club, Winchester Hockey Club.

Lawn bowls is played at several clubs. The oldest bowling green belongs to Friary Bowling Club (first used in 1820), while the oldest bowls club is Hyde Abbey Bowling Club (established in 1812). Riverside Indoor Bowling Club remains open during the winter months.

There are three 18-hole golf courses. Royal Winchester Golf Club is on downland adjacent to the Clarendon Way. John Henry Taylor was the club professional when winning the Open Championship in 1894 and 1895, and there is a room with memorabilia named after him. Hockley Golf Club is located on St Catherine's Hill. South Winchester Golf Club is another downland course, designed by David Thomas and Peter Alliss. The club was established in 1993.

Winchester College invented and gave its name to Winchester College football.

Road
Winchester is located near the M3 motorway and at the meeting of the A34, A31, A3090 and A272 roads. Once a major traffic bottleneck, the city still suffers from congestion at peak times. It is just to the south of the A303 and A30.

Roman road
A Roman road originating in Salisbury ends in Winchester. The road is now a recreational footpath known as the Clarendon Way.

Bus services
Local, rural and Park and Ride bus services are provided by Stagecoach South, who run to Andover, Alton, Basingstoke, Petersfield, Romsey and Fareham. Bluestar provide services to Eastleigh and Southampton. Many services are subsidised by Hampshire County Council and community transport schemes are available in areas without a regular bus service. National Express coaches provide services mainly to Bournemouth, Poole, Portsmouth and London.

Megabus also provide long-distance services.

Community Transport Schemes
Three different community transport schemes are on offer by Winchester City Council, those offerings are as follows:

 * Dial-A-Ride - A service available from 8:45 am to 4:30 pm within the Winchester City Council district for those with a mobility or sensory impairment that would make it uncomfortable or impossible to ride in a taxi or bus. The minibuses the service use are fully wheelchair accessible and do not require that you be registered as disabled.
 * Voluntary Car-Share - These schemes are not exclusive to Winchester area, with many such schemes being offered throughout Hampshire and indeed the UK. This is where a group of volunteer drivers with their own vehicles offer transport to people in their area that're in need such as the vulnerable, those with low incomes (to provide an alternative to expensive taxi fares) or taking people to medical appointments when they otherwise couldn't get there themselves.
 * Wheels to Work - A scheme for use across Hampshire which is designed to allow people without access to public or private transport to find work, to go to vocational trainings or to attend interviews. The scheme offers a moped (50cc, 110cc or electric) on loan to those 16-25 for anywhere from 3-12 months depending on one's circumstances. The scheme requires that the individual already hold a provisional drivers license and have passed their Compulsory Basic Training (which the scheme also offers to cover the cost for should the individual not have passed yet).

Rail
Winchester railway station is served by South Western Railway trains from London Waterloo, Weymouth, Portsmouth and Southampton, as well as by CrossCountry between Bournemouth, and either Manchester or Newcastle via Birmingham. Historically it was also served by a line to London via Alton, which partially survives as the Watercress Line. The closure of this line removed an alternative route between London and Winchester when, due to engineering works or other reasons, the main line was temporarily unusable. There was a second station called Winchester Chesil served by the Didcot, Newbury & Southampton Railway; this closed in the 1960s. This line provided a link to the Midlands and the North, bypassing the present longer route through Reading.

Law courts
Winchester Combined Court Centre hosts both the Crown Court and the County Court. It is administered by His Majesty's Courts Service, an executive agency of the Ministry of Justice. Winchester is a first-tier court centre and is visited by High Court judges for criminal and for civil cases (in the District Registry of the High Court). One of the most high-profile cases to be heard here was the murder trial of Rose West in 1995.

Winchester has a separate district probate registry, which is part of the High Court. This court is separate from the main court establishment at the top of Winchester High Street and deals only with probate matters.

There is a heavily populated Victorian prison, HMP Winchester, opposite the hospital, on the B3040 heading up west from the town centre.

Media and culture
Since 1974 Winchester has hosted the annual Hat Fair, a celebration of street theatre that includes performances, workshops, and gatherings at several venues around the city.

Winchester is the home of Blue Apple Theatre, a theatre company that supports performers with learning disabilities to develop theatre, dance and film productions. It won the Queen's Award for Voluntary Service in 2012. Founded in 1997, Platform 4 is a National performance and visual arts company based in Winchester.

Winchester hosts one of the UK's larger farmers' markets, with about 100 stalls. The market takes place on the second and last Sunday of the month in the city centre. The city also hosts the annual Winchester Cathedral Christmas Market, which runs from mid-November to just before Christmas.

Four newspapers are published for Winchester. The weekly paid-for Hampshire Chronicle, which started out in 1772 reporting national and international news, now concentrates on Winchester and the surrounding area. The Southern Daily Echo mostly concerns Southampton, but does also feature Winchester. It has an office shared with sister paper the Hampshire Chronicle. The Mid-Hants Observer is a free, weekly independent paper for Winchester and nearby villages. Its sister paper, the weekly Hampshire Independent, which covers the whole county, is also based in Winchester. The free Winchester News Extra closed in 2017. Winchester had its own radio station, Win FM, from October 1999 to October 2007.

In October 2006, the Channel 4 television programme The Best And Worst Places To Live In The UK, the city was celebrated as the "Best Place in the UK to Live in: 2006". In March 2016, Winchester was named as the best place to live in Britain by the "Sunday Times Best Places To Live" guide.

International relations
Winchester is twinned with:
 * Laon, Aisne, Hauts-de-France, France

The Winchester district is twinned with
 * Giessen, Hesse, Germany

Winchester, Virginia, is named after the English city, whose Mayor has a standing invitation to be a part of the American city's Shenandoah Apple Blossom Festival. Winchester also gave its name (Frenchified to Bicêtre) to a suburb of Paris, from a manor built there by John of Pontoise, Bishop of Winchester, at the end of the 13th century. It is now the commune of Le Kremlin-Bicêtre.

title: Winchester


text:
Aurelian

Aurelian (Lucius Domitius Aurelianus; 9 September c. 214 – c.  November 275) was a Roman emperor who reigned from 270 to 275 during the Crisis of the Third Century. As emperor, he won an unprecedented series of military victories which reunited the Roman Empire after it had nearly disintegrated under the pressure of barbarian invasions and internal revolts. Born in modest circumstances, most likely in Moesia Superior, he entered the Roman army in 235 and climbed up the ranks. He went on to lead the cavalry of the emperor Gallienus, until Gallienus' assassination in 268. Following that, Claudius Gothicus became emperor until his own death in 270. Claudius' brother Quintillus then ruled for three months, before Aurelian took the empire for himself.

During his reign, he defeated the Alamanni after a devastating war. He also defeated the Goths, Vandals, Juthungi, Sarmatians, and Carpi. Aurelian restored the Empire's eastern provinces after his conquest of the Palmyrene Empire in 273. The following year he conquered the Gallic Empire in the west, reuniting the Empire in its entirety. He was also responsible for the construction of the Aurelian Walls in Rome, the abandonment of the province of Dacia, and monetary reforms attempting to curb the devaluation of the Roman currency.

Although Domitian, two centuries earlier, was the first emperor who had demanded to be officially hailed as dominus et deus ("master and god"), these titles never occurred in written form on official documents until the reign of Aurelian. His successes were instrumental in ending the crisis, earning him the title Restitutor Orbis ("Restorer of the World").

Early life
Many details about Aurelian's early life come from the Historia Augusta and are considered unreliable. Comparative research with other sources from his era has rendered some details more secure than others. Aurelian was born on 9 September, a date recorded in the Chronograph of 354. The 6th-century chronicler John Malalas wrote that he died at the age of 61, implying a birth in 214. However, his chronicle is often described as "too frequently unreliable", meaning that his statement may not be completely accurate.

The Historia Augusta describes him both as a Pannonian from Sirmium and as a native of Dacia Ripensis "which he founded so that he would have been a Moesian". Pseudo-Victor and John Xiphilinus place his birthplace in an area between Dacia Ripensis and Macedonia (overlapping with Dacia Mediterranea). Modern research considers Dacia Ripensis as the more likely region. When he was born this region was part of Moesia Superior. Aurelian was an Illyrian like several other emperors of the late 3rd century (Illyrian emperors) all of whom shared a common military background. Pseudo-Victor describes his father as a colonus (tenant farmer) who worked the lands of a senator named Aurelius. Aurelian's father was probably a veteran of the Roman army. He married the daughter of Aurelius from whom Aurelian received his name via his mother. The Historia Augusta describes her as "priestess of Sol", whose worship Aurelian promoted as Emperor (Sol Invictus). These two propositions, together with the tradition that the clan Aurelius had been entrusted with the maintenance of that deity's cult in Rome, inspired the notion that this could explain the devotion to the sun-god that Aurelian was to manifest as emperor. However, it seems that this extrapolation of unverifiable facts is now generally accepted as being no more than just that.

Military service
It is commonly accepted that Aurelian probably joined the army in 235 at around age twenty. It is also generally assumed that, as a member of the lowest rank of society – albeit a citizen – he would have enlisted in the ranks of the legions. Saunders suggests that his career is more easily understood if it is assumed that his family was of Roman settler origins with a tradition of military service and that he enlisted as an equestrian. This would have opened up for him the tres militia – the three steps of the equestrian military career – one of the routes to higher equestrian office in the Imperial Service. This could be a more expeditious route to senior military and procuratorial offices than that pursued by ex-rankers, although not necessarily less laborious. However, although Saunders's conjecture as to Aurelian's early career is not supported by any evidence other than his nomen which could indicate Italian settler ancestry — and even this is contested — his rise to the highest ranks is more easily understood if he did not have to start from the bottom. His suggestion has not been taken up by other academic authorities.

Whatever his origins, Aurelian certainly must have built up a very solid reputation for military competence during the tumultuous mid-decades of the century. To be sure, the exploits detailed in the Historia Augusta vita Divi Aureliani, while not always impossible, are not supported by any independent evidence and one at least is demonstrably an invention typical of that author. However, he was probably associated with Gallienus's cavalry army and shone as an officer of that elite unit because, when he finally emerged in a historically reliable context in the early part of the reign of Claudius II, he seems to have been its commander.

Ulpius Crinitus
The existence of Ulpius Crinitus has been doubted by many historians. If he did exist he would have been a dux of the Illyrian and Thracian legions. Ulpius was reportedly born in the city of Italica, in modern Spain. He took an interest in Aurelian's early career. Aurelian was reportedly his deputy for a time. When a group of Goths invaded Illyria and Thrace, Ulpius had fallen ill, so he ordered Aurelian to deal with the invaders. Aurelian was designated as legate of the Third Legion. He used his force of 2,500 auxiliaries, and the armies of four Germanic chieftains to defeat the Goths in battle. Aurelian used the resources gained from the battles to enrich the provinces. After the battle, Crinitus thanked Valerian, the emperor at the time, for providing him with such a talented deputy. Crinitus adopted Aurelian as his heir, either voluntarily or possibly through force. Emperor Valerian attended the adoption ceremony which took place in the baths of Byzantium. Following this, Crinitus disappeared from the historical record. A painting showing Ulpius Crinitus alongside Aurelian has been found in the Temple of Sol, adding to the veracity of his existence.

Under Gallienus
Aurelian's successes as a cavalry commander ultimately made him a member of Emperor Gallienus' entourage. In 268 Gallienus travelled to Italy and fought Aureolus, his former general and now usurper for the throne. Driving Aureolus back into Mediolanum, Gallienus promptly besieged his adversary in the city. However, during the siege the Emperor was assassinated. One source says Aurelian, who was present at the siege, participated and supported general Claudius for the purple — which is plausible. In 268 or 269 Aurelian and his cavalry participated in the victory of Emperor Gallienus (or Emperor Claudius II Gothicus) over the Goths at the Battle of Naissus.

Aurelian was married to Ulpia Severina, about whom little is known. She was from Dacia. They are known to have had a daughter together.

Under Claudius
Claudius was proclaimed emperor by the soldiers outside Mediolanum. The new emperor immediately ordered the Senate to deify Gallienus. Next, Claudius began to distance himself from those responsible for his predecessor's assassination, ordering the execution of those directly involved. Aureolus was still besieged in Mediolanum and sought reconciliation with the new emperor, but Claudius had no sympathy for a potential rival. The emperor had Aureolus killed and one source implicates Aurelian in the deed, perhaps even signing the warrant for his death himself.

During the reign of Claudius, Aurelian was promoted rapidly: he was given command of the elite Dalmatian cavalry and soon promoted to overall head of the army after the emperor and what had been Emperor Claudius' own position before his acclamation. The war against Aureolus and the concentration of forces in Italy allowed the Alamanni to break through the Rhaetian limes along the upper Danube. Marching through Raetia and the Alps unhindered, they entered northern Italy and began pillaging the area. In early 269, emperor Claudius and Aurelian marched north to meet the Alamanni, defeating them at the Battle of Lake Benacus.

While still dealing with the defeated enemy, news came from the Balkans reporting large-scale attacks from the Heruli, Goths, Gepids, and Bastarnae. Claudius immediately dispatched Aurelian to the Balkans to contain the invasion as best he could until Claudius could arrive with his main army. The Goths were besieging Thessalonica when they heard of emperor Claudius' approach, causing them to abandon the siege and pillage north-eastern Macedonia. Aurelian intercepted the Goths with his Dalmatian cavalry and defeated them in a series of minor skirmishes, killing as many as three thousand of the enemy. Aurelian continued to harass the enemy, driving them northward into Upper Moesia where emperor Claudius had assembled his main army. The ensuing battle was indecisive: the northward advance of the Goths was halted but Roman losses were heavy.

Claudius could not afford another pitched battle, so he instead laid a successful ambush, killing thousands. However, the majority of the Goths escaped and began retreating south the way they had come. For the rest of year, Aurelian harassed the enemy with his Dalmatian cavalry.

Now stranded in Roman territory, the Goths' lack of provisions began to take its toll. Aurelian, sensing his enemies' desperation, attacked them with the full force of his cavalry, killing many and driving the remainder westward into Thrace. As winter set in, the Goths retreated into the Haemus Mountains, only to find themselves trapped and surrounded. The harsh conditions now exacerbated their shortage of food. However, the Romans underestimated the Goths and let their guard down, allowing the enemy to break through their lines and escape. Apparently emperor Claudius ignored advice, perhaps from Aurelian, and withheld the cavalry and sent in only the infantry to stop their break-out.

The determined Goths killed many of the oncoming infantry and were only prevented from slaughtering them all when Aurelian finally charged in with his Dalmatian cavalry. The Goths still managed to escape and continued their march through Thrace. The Roman army continued to follow the Goths during the spring and summer of 270. Meanwhile, a devastating plague swept through the Balkans, killing many soldiers in both armies.

Emperor Claudius fell ill on the march to the battle and returned to his regional headquarters in Sirmium, leaving Aurelian in charge of operations against the Goths. Aurelian used his cavalry to great effect, breaking the Goths into smaller groups which were easier to handle. By late summer the Goths were defeated: any survivors were stripped of their animals and booty and were levied into the army or settled as farmers in frontier regions. Aurelian had no time to relish his victories; in late August news arrived from Sirmium that emperor Claudius was dead.

Rise to power
When Claudius died, his brother Quintillus seized power with support of the Senate. With an act typical of the Crisis of the Third Century, the army refused to recognize the new emperor, preferring to support one of its own commanders: Aurelian was proclaimed emperor about August or September (older sources argue for May) by the legions in Sirmium. Aurelian defeated Quintillus' troops, and was recognized as emperor by the Senate after Quintillus' death. The claim that Aurelian was chosen by Claudius on his death bed can be dismissed as propaganda; later, probably in 272, Aurelian put his own dies imperii at the day of Claudius' death, thus implicitly considering Quintillus a usurper.

With his base of power secure, he now turned his attention to Rome's greatest problems – recovering the vast territories lost over the previous two decades, and reforming the res publica.

The Roman Empire in the 270s
In 248, Emperor Philip the Arab had celebrated the millennium of the city of Rome with great and expensive ceremonies and games, and the Empire had given a tremendous proof of self-confidence. In the following years, however, the Empire had to face a huge pressure from external enemies, while, at the same time, dangerous civil wars threatened the empire from within, with usurpers weakening the strength of the state. Also, the economic substrate of the state, agriculture and commerce, suffered from the disruption caused by the instability. On top of this, an epidemic swept through the Empire around 250, greatly diminishing manpower both for the army and for agriculture.

The end result was that the Empire could not endure the blow of the capture of Emperor Valerian in 260 by the Sassanids. The eastern provinces found their protectors in the rulers of the city of Palmyra, in Syria, whose autonomy grew until the formation of the Palmyrene Empire, which was successful in defending against the Sassanid threat. The western provinces, those facing the limes of the Rhine, seceded to form a third, autonomous state within the territories of the Roman Empire, which is now known as the Gallic Empire.

In Rome, the Emperor was occupied with internal menaces to his power and with the defence of Italia and the Balkans.

Reunification of the empire
The first actions of the new Emperor were aimed at strengthening his own position in his territories. Late in 270, Aurelian campaigned in northern Italia against the Vandals, Juthungi, and Sarmatians, expelling them from Roman territory. To celebrate these victories, Aurelian was granted the title of Germanicus Maximus. The authority of the Emperor was challenged by several usurpers—Septimius, Urbanus, Domitianus, and the rebellion of Felicissimus—who tried to exploit the sense of insecurity of the empire and the overwhelming influence of the armies in Roman politics. Aurelian, being an experienced commander, was aware of the importance of the army, and his propaganda, known through his coinage, shows he wanted the support of the legions.

Defending Italy against the Juthungi
The burden of the northern barbarians was not yet over, however. In 271, the Alamanni moved towards Italia, entering the Po plain and sacking the villages; they passed the Po River, occupied Placentia and moved towards Fano. Aurelian, who was in Pannonia to control the Vandals' withdrawal, quickly entered Italia, but his army was defeated in an ambush near Placentia (January 271). When the news of the defeat arrived in Rome, it caused great fear for the arrival of the barbarians, but Aurelian attacked the Alamanni camping near the Metaurus River, defeating them in the Battle of Fano, and forcing them to re-cross the Po river; Aurelian finally routed them at Pavia. For this, he received the title Germanicus Maximus. However, the menace of the Germanic people and a Germanic invasion was still perceived by the Romans as likely; therefore Aurelian resolved to build a new system of walls around Rome that became known as the Aurelian Walls.

Defeat of the Goths and abandonment of Dacia
The emperor led his legions to the Balkans, where he defeated and routed the Goths beyond the Danube, killing the Gothic leader Cannabaudes, and assuming the title of Gothicus Maximus. However, he decided to abandon the province of Dacia, on the exposed north bank of the Danube, as it was too difficult and expensive to defend. He reorganized a new province of Dacia south of the Danube, inside the former Moesia, called Dacia Aureliana, with Serdica as the capital.

Conquest of the Palmyrene Empire

In 272, Aurelian turned his attention to the lost eastern provinces of the empire, the Palmyrene Empire, ruled by Queen Zenobia from the city of Palmyra. Zenobia had carved out her own empire, encompassing Syria, Palestine, Egypt and large parts of Asia Minor. The Syrian queen cut off Rome's shipments of grain, and in a matter of weeks, the Romans started running low on bread. In the beginning, Aurelian had been recognized as Emperor, while Vaballathus, the son of Zenobia, held the title of rex and imperator ("king" and "supreme military commander"), but Aurelian decided to invade the eastern provinces as soon as he felt his army to be strong enough.

Asia Minor was recovered easily; every city but Byzantium and Tyana surrendered to him with little resistance. The fall of Tyana lent itself to a legend: Aurelian to that point had destroyed every city that resisted him, but he spared Tyana after having a vision of the great 1st-century philosopher Apollonius of Tyana, whom he respected greatly, in a dream. Apollonius implored: "Aurelian, if you desire to rule, abstain from the blood of the innocent! Aurelian, if you will conquer, be merciful!" Aurelian spared Tyana, and it paid off; many more cities submitted to him upon seeing that the Emperor would not exact revenge upon them. Within six months, his armies stood at the gates of Palmyra, which surrendered when Zenobia tried to flee to the Sassanid Empire.

Eventually Zenobia and her son were captured and made to walk the streets of Rome in his triumph, the woman in golden chains. With the grain stores once again shipped to Rome, Aurelian's soldiers handed out free bread to the citizens of the city, and the Emperor was hailed a hero by his subjects. After a brief clash with the Persians and another in Egypt against the usurper Firmus, Aurelian was obliged to return to Palmyra in 273 when that city rebelled once more. This time, Aurelian allowed his soldiers to sack the city, and Palmyra never recovered. More honors came his way; he was now known as Parthicus Maximus and Restitutor Orientis ("Restorer of the East").

The rich province of Egypt was also recovered by Aurelian. The Brucheion (Royal Quarter) in Alexandria was burned to the ground. This section of the city once contained the Library of Alexandria, although the extent of the surviving Library in Aurelian's time is uncertain.

Conquest of the Gallic Empire
In 274, the victorious emperor turned his attention to the west, and the Gallic Empire which had already been reduced in size by Claudius II. Aurelian won this campaign largely through diplomacy; the "Gallic Emperor" Tetricus was willing to abandon his throne and allow Gaul and Britain to return to the Empire, but could not openly submit to Aurelian. Instead, the two seem to have conspired so that when the armies met at the Battle of Châlons at Durocatalaunum that autumn, Tetricus simply deserted to the Roman camp and Aurelian easily defeated the Gallic army facing him. Tetricus was rewarded for his collusion by Aurelian who made him a senator and corrector (governor) of Lucania et Bruttium. Aurelian returned to Rome and won his last honorific from the Senate – Restitutor Orbis ("Restorer of the World"). This title was first assumed by Aurelian in late summer of 272, and had been carried previously by both Valerian and Gallienus. In four years, Aurelian had secured the frontiers of the Empire and reunified it.

Reforms
Aurelian was a reformer, and settled many important functions of the imperial apparatus, dealing with the economy and religion. He restored many public buildings, reorganized the management of the food reserves, set fixed prices for the most important goods, and prosecuted misconduct by the public officers.

Religious reform
Aurelian strengthened the position of the Sun god Sol Invictus as the main divinity of the Roman pantheon. His intention was to give to all the peoples of the Empire, civilian or soldiers, easterners or westerners, a single god they could believe in without betraying their own gods. The centre of the cult was a new temple, built in 274 and dedicated on December 25 of that year in the Campus Agrippae in Rome, with great decorations financed by the spoils of the Palmyrene Empire.

During his short rule, Aurelian seemed to follow the principle of "one faith, one empire", which would not be made official until the Edict of Thessalonica. He appears with the title deus et dominus natus ("God and born ruler") on some of his coins, a style also later adopted by Diocletian. Lactantius argued that Aurelian would have outlawed all the other gods if he had had enough time. He was recorded by Christian historians as having organized persecutions.

Felicissimus' rebellion and coinage reform
Aurelian's reign records the only uprising of mint workers. The rationalis Felicissimus, a senior public financial official whose responsibilities included supervision of the mint at Rome, revolted against Aurelian. The revolt seems to have been caused by the fact that the mint workers, and Felicissimus first, were accustomed to stealing the silver for the coins and producing coins of inferior quality. Aurelian wanted to eliminate this, and put Felicissimus on trial. The rationalis incited the mint workers to revolt: the rebellion spread in the streets, even if it seems that Felicissimus was killed immediately, presumably executed.

The Palmyrene rebellion in Egypt had probably reduced the grain supply to Rome, thus disaffecting the population to the emperor. This rebellion also had the support of some senators, probably those who had supported the election of Quintillus, and thus had something to fear from Aurelian.

Aurelian ordered the cohortes urbanae ("urban cohorts"), reinforced by some regular troops of the imperial army, to attack the rebelling mob: the resulting battle, fought on the Caelian hill, marked the end of the revolt, even if at a high price (some sources give the figure, probably exaggerated, of 7,000 casualties). Many of the rebels were executed; also some of the supporting senators were put to death. The mint of Rome was closed temporarily, and the institution of several other mints caused the main mint of the empire to lose its hegemony.

His monetary reformation included the introduction of antoniniani containing 5% silver. They bore the mark XXI (or its Greek numeral form KA ), which meant that twenty of such coins would contain the same silver quantity of an old silver denarius. Considering that this was an improvement over the previous situation gives an idea of the severity of the economic situation Aurelian faced. The Emperor struggled to introduce the new "good" coin by recalling all the old "bad" coins before their introduction.

A very large number of rare gold coins of Aurelian have been discovered as part of the Lava Treasure in Corsica, France, in the 1980s.

Food distribution reforms
Rome had been distributing grain to its poorest citizens at a reduced price since 123 BC, and for free since 58 BC through the Cura Annonae. Aurelian is usually credited with changing or completing the change of the food distribution system from grain or flour to bread, and adding olive oil, salt, and pork to the products distributed to the populace. These products had been distributed sporadically before. Aurelian is also credited with increasing the size of the loaves of bread without increasing their price – a measure that was undoubtedly popular with the Romans who were not receiving free bread and other products through the dole.

Aurelian is believed to have terminated Trajan's alimenta program. Roman prefect Titus Flavius Postumius Quietus was the last known official in charge of the alimenta, in 271. If Aurelian "did suppress this food distribution system, he most likely intended to put into effect a more radical reform." Indeed, around this time, Aurelian reformed the Cura Annonae to replace the dole of grain by a dole of bread, salt and pork, as well as subsidized prices for other goods such as oil and wine.

Death
The deaths of the Sassanid Kings Shapur I (272) and Hormizd I (273) in quick succession, and the rise to power of a weakened ruler (Bahram I), presented an opportunity to attack the Sassanid Empire, and in 275 Aurelian set out for another campaign against the Sassanids. On his way, he suppressed a revolt in Gaul – possibly against Faustinus, an officer or usurper of Tetricus – and defeated barbarian marauders in Vindelicia (Germany).

However, Aurelian never reached Persia, as he was murdered while waiting in Thrace to cross into Asia Minor. As an administrator, he had been strict and had handed out severe punishments to corrupt officials or soldiers. A secretary of his (called Eros by Zosimus) had told a lie on a minor issue. In fear of what the emperor might do, he forged a document listing the names of high officials marked by the emperor for execution and showed it to collaborators. The notarius Mucapor and other high-ranking officers of the Praetorian Guard, fearing punishment from the emperor, murdered him shortly after October 275 (Tacitus began his reign in November or December), in Caenophrurium, Thrace.

Aurelian's enemies in the Senate briefly succeeded in passing damnatio memoriae on the emperor, but this was reversed before the end of the year, and Aurelian, like his predecessor Claudius II, was deified as Divus Aurelianus.

There is some evidence that Aurelian's wife, Ulpia Severina, who had been declared Augusta in 274, ruled the empire in her own right for some time after his death, although this is just speculative. Sources hint at an interregnum between Aurelian's death and the election of Marcus Claudius Tacitus as his successor. Additionally, some of Ulpia's coins appear to have been minted after Aurelian's death.

Legacy
The city of Orléans in France is named after Aurelian. Originally named Cenabum, Aurelian rebuilt and renamed it Aurelianum or Aureliana Civitas ("city of Aurelian", cité d'Aurélien), which evolved into Orléans. The city of New Orleans (in French, La Nouvelle-Orléans, in Latin, Nova Aurelianum), in Louisiana, United States is named after the commune of Orléans, and therefore by extension, Aurelian.

title: Aurelian


text:
Hotel-class submarine

The Hotel class is the general NATO classification for a type of nuclear-powered ballistic missile submarine that was launched by the Soviet Union around 1959. The Soviet designation was Project 658.

Design
The development of the submarine, designed to carry the D-2 launch system and R-13 missiles, was approved on 26 August 1956. Work on the design began in September 1956, the technical project was completed in the first quarter of 1957.

The duties of the chief designer of Project 658 were originally assigned to the chief engineer of OKB-18, P.Z. Golosovskiy. In February 1958 project management was transferred to I.V. Mikhaylov, who in October 1958 had replaced S.N. Kovalev. From the outset the deputy of the chief designer was I.D. Spasskiy.

The Hotel design was based on the Project 627 November-class submarine, the first Soviet nuclear submarines. They were modified by adding the missile compartment from the Golf-class submarines. Additionally, the Hotels had small horizontal hydroplanes for better maneuverability and more reliable electro-hydraulic command control surfaces for high-speed underwater operations with reduced noise.

The D-2 launch system on the Hotels placed three R-13 missiles in vertical containers directly behind the sail. The submarine had to be surfaced to launch, but all three missiles could be fired within 12 minutes of surfacing.

Hotel I
The first Hotel-class submarine, SOVIET SUBMARINE K-19, was laid down on 17 October 1958 and commissioned on 12 November 1960, only to suffer numerous setbacks and accidents. The last of the eight Hotel submarines was launched on April 1, 1962. All of them were built at Severodvinsk State Shipyard 402 (now known as the Northern Machine-Building Enterprise - SEVMASH) in Molotovsk (now Severodvinsk) shipyard Russia.

Hotel II
Beginning in 1961 and ending in 1963, all Hotels but one (K-145) were equipped with the new D-4 launch system, which could launch missiles from a depth of 16 m. The modified submarines received the NATO reporting name Hotel II. They were armed with R-21 (SS-N-5 Serb) missiles, with a range of 1,200 km. The installation of the D-4 launching system required some structural changes of the submarine; before launch, the launch tube had to be flooded. The chief designer of the modification was S.N. Kovalev.

Hotel III
From 1969 to 1970, K-145 was modified by Project 701 to test the R-29 missiles, receiving the NATO reporting name Hotel III. It was lengthened to 130 meters and its displacement increased to 5,500 tons surfaced and 6,400 tons submerged. The maximum speed was reduced to 18 kn on the surface and 22 kn submerged. Six launchers for R-29 missiles were placed in two compartments, each with three launchers. In 1976 K-145 returned to combat service.

title: Hotel-class submarine


text:
Juliett-class submarine

Project 651, known in the West by its NATO reporting name Juliett class, was a class of Soviet diesel-electric submarines armed with cruise missiles. They were designed in the late 1950s to provide the Soviet Navy with a nuclear strike capability against targets along the east coast of the United States and enemy combatants (aircraft carriers). The head of the design team was Abram Samuilovich Kassatsier. They carried four nuclear-capable cruise missiles with a range of approximately 300 nmi, which could be launched while the submarine was surfaced and moving less than 4 kn. Once surfaced, the first missile could be launched in about five minutes; subsequent missiles would follow within about ten seconds each. Initially, the missiles were the inertially-guided P-5 (NATO reporting name SS-N-3c Shaddock). When submarine-launched ballistic missiles rendered the P-5s obsolescent, they were replaced with the P-6 (also NATO reporting name SS-N-3a Shaddock, though a very different missile) designed to attack aircraft carriers. A special 10 m2 target guidance radar was built into the forward edge of the sail structure, which opened by rotating. One boat was eventually fitted with the Kasatka satellite downlink for targeting information to support P-500 4K-80 "Bazalt" (SS-N-12 Sandbox) anti-ship cruise missiles. The Juliett class had a low magnetic signature austenitic steel double hull, covered by 2 in thick black tiles made of sound-absorbing hard rubber.

Background and description
In the late 1950s, the Soviet Navy was tasked to neutralize American bases and aircraft carriers. It began construction of a large number of expensive nuclear-powered (Echo-class submarines) to accomplish this, but could not build enough nuclear reactors to equip them promptly. Even though the Juliett class was inferior to the Echos, it was ordered into production because it did not require resources needed for the nuclear boats.

The Juliett-class boats are a double-hulled design that displaces 3174 t on the surface and 3750 t submerged. The boats have an overall length of 85.9 m, a beam of 9.7 m and a draft (ship) of 6.29 m. The Julietts have a test depth of 240 m and a design depth of 300 m. The prominent blast deflectors cut out of the outer hull behind the missile launchers make the submarines very noisy at high speed. Their crew numbered 78 men.

Propulsion and performance
The Juliett class is powered by a diesel-electric system that consists of two 4000 PS 1D43 diesel engines and a pair of 3000 PS MG-141 electric motors for cruising on the surface. Two additional 200 PS electric motors are intended for slow speeds underwater and are powered by four banks of lead-acid battery cells that are recharged by a 1000 PS 1DL42 diesel generator. The boats are fitted with a retractable snorkel to allow the diesel engines to operate while underwater.

On the surface, the submarines have a maximum speed of 16 kn. Using their diesel-electric system while snorkeling gives the Julietts a range of 18000 nmi at 7 kn. Using just the electric motors underwater, they have a maximum range of 810 nmi at 2.74 kn. Their best submerged speed on electric motors is 18 kn, although it reduces their range to 27.8 nmi. They could carry enough supplies for 90 days of operation.

Armament
To carry out the Julietts' mission of destroying American carrier battle groups and bases, they were fitted with two pairs of missile launchers, one each fore and aft of the sail. The launchers were used by the surface-launched SS-N-3 Shaddock family of long-range, turbojet-powered, cruise missiles. The P-5D version was codenamed SS-N-3c by NATO and was a dedicated land-attack missile that could be equipped with either a high-explosive or nuclear warhead; it was withdrawn from service in 1965–1966. The P-6 (SS-N-3a) variant was a radar-guided anti-ship missile that could also be fitted with high-explosive and nuclear warheads. The more traditional armament of the Julietts consisted of six 533 mm torpedo tubes mounted in the bow and four 406 mm torpedo tubes in the stern. Due to space limitations, no reloads were provided for the bow tubes, but each stern tube had two reloads for a total of twelve.

Fire control and sensors
The submarines relied upon aircraft for their long-range anti-ship targeting which they received via the Uspekh-U datalink system. Their own Argument missile-guidance radar (NATO reporting name: Front Door) controlled the P-6 missiles until they were out of range via a datalink codenamed Front Piece. The missiles' onboard radar would detect the targets and transmit an image back to the submarine via video datalink so the crew could select which target to attack, after which the missile relied upon its own radar for terminal guidance. The Argument radar has a massive antenna that was stowed at the front of the sail and rotated 180° for use. The Front Piece antenna was mounted on top of the Argument antenna.

The boats are fitted with Artika-M (MG-200) and Herkules (MG-15) sonars, Feniks-M (MG-10) and MG-13 hydrophones and an Albatros RLK-50 search radar (NATO reporting name: Snoop Tray). They are also equipped with a Nakat-M Electronic warfare support measures system.

Initial plans called for 35 submarines of this class but only 16 were built, two - including the lead sub, by the Baltic Shipyard, St. Petersburg and the rest by the Krasnoye Sormovo Shipyard in Nizhny Novgorod. They were commissioned between 1963 and 1968 and served through the 1980s. The last one was decommissioned in 1994.

The Juliett class was built due to expected delays in the continued production of the nuclear-powered Project 659 Echo I-class submarines and 675 Echo II-class submarines, with six and eight missile launchers, respectively. The Julietts were designed after the Echos.

title: Juliett-class submarine