Deprecated

In favour of
clash-lib

clash-vhdl

CAES Language for Synchronous Hardware - VHDL backend

http://www.clash-lang.org/

LTS Haskell 9.21:0.7.2
Stackage Nightly 2017-07-25:0.7.2
Latest on Hackage:0.7.2

See all snapshots clash-vhdl appears in

BSD-2-Clause licensed by Christiaan Baaij
Maintained by Christiaan Baaij
This version can be pinned in stack with:clash-vhdl-0.7.2@sha256:1c7a72cd9b746f80a8d8f2345933d85391d2bd93cdd4ea1efc2bae5e9eab856e,5150

Module documentation for 0.7.2

Used by 1 package in lts-9.21(full list with versions):
clash-ghc

clash-vhdl - VHDL backend for the CλaSH compiler

  • See the LICENSE file for license and copyright details

CλaSH - A functional hardware description language

CλaSH (pronounced ‘clash’) is a functional hardware description language that borrows both its syntax and semantics from the functional programming language Haskell. The CλaSH compiler transforms these high-level descriptions to low-level synthesizable VHDL, Verilog, or SystemVerilog.

Features of CλaSH:

  • Strongly typed (like VHDL), yet with a very high degree of type inference, enabling both safe and fast prototying using consise descriptions (like Verilog).

  • Interactive REPL: load your designs in an interpreter and easily test all your component without needing to setup a test bench.

  • Higher-order functions, with type inference, result in designs that are fully parametric by default.

  • Synchronous sequential circuit design based on streams of values, called Signals, lead to natural descriptions of feedback loops.

  • Support for multiple clock domains, with type safe clock domain crossing.

Support

For updates and questions join the mailing list [email protected] or read the forum

Changes

Changelog for the clash-vhdl package

0.7.2 April 25th 2017

  • New features:
    • Sum-of-product types: unused bits now “don’t-care” #212

0.7.1 April 11th 2017

  • Fixes bugs:
    • resize Integer multiplication result

0.7 January 16th 2017

  • New features:
    • Support clash-prelude 0.11

0.6.16 August 3rd 2016

  • Fixes bugs:
    • Incorrect primitive for Integers ltInteger# and geInteger#

0.6.15 July 19th 2016

  • Fixes bugs:
    • Incorrect primitive for Indexs *#
    • Incorrect handling of Indexs fromInteger# and maxBound# primitives for values larger than 2^MACHINE_WIDTH

0.6.14 July 15th 2016

  • New features:
    • Support clash-lib-0.6.18
  • Fixes bugs:
    • Incorrect primitive specifications for Integer’s shiftL and shiftR
    • Types in generated types.vhdl incorrectly sorted

0.6.13 June 9th 2016

  • Fixes bugs:
    • Converting product types to std_logic_vector fails when the clash-hdlsyn Vivado flag is enabled

0.6.12 June 7th 2016

  • Fixes bugs:
    • Incorrect primitive specification for snatToInteger #149

0.6.11 April 7th 2016

  • Fixes bugs:
    • Incorrect primitives for BitVectors quot# and rem#
    • Bit indexing and replacement primitives fail to synthesise in Synopsis tools

0.6.10 March 15th 2016

  • Fixes bugs:
    • XST cannot finds “_types” package unless it is prefixed with “work.” #133

0.6.9 March 15th 2016

  • Fixes bugs:
    • XST cannot finds “_types” package unless it is prefixed with “work.” #133

0.6.8 March 11th 2016

  • Support clash-lib 0.6.11
  • Fixes bugs:
    • Vivado fails to infer block ram #127
      • Users must use the -clash-hdlsyn Vivado flag in order to generate Xilinx Vivado specific HDL for which Vivado can infer block RAM.

0.6.7 February 10th 2016

  • Fixes bugs:
    • insufficient type-qualifiers for concatenation operator #121

0.6.6 January 29th 2016

  • New features:
    • Support clash-lib-0.6.9
    • Support for Debug.Trace.trace, thanks to @ggreif
  • Fixes bugs:
    • BlockRAM elements must be bit vectors #113

0.6.5 January 13th 2016

  • New features:
    • Support for Haskell’s: Char, Int8, Int16, Int32, Int64, Word, Word8, Word16, Word32, Word64.
    • Int/Word/Integer bitwidth for generated VHDL is configurable using the -clash-intwidth=N flag, where N can be either 32 or 64.

0.6.4 November 17th 2015

  • Fixes bugs:
    • Integer literals should only be capped to 32-bit when used in assignments.

0.6.3 November 12th 2015

  • Fixes bugs:
    • Do not generate overlapping literal patterns #91

0.6.2 October 21st 2015

  • New features:
    • Support clash-prelude 0.10.2

0.6.1 October 16th 2015

  • New features:
    • Support for clash-prelude 0.10.1

0.6 October 3rd 2015

  • New features:
    • Support clash-prelude-0.10

0.5.12 September 21st 2015

  • Fixes bugs:
    • Fix Index maxBound #79

0.5.11 September 14th 2015

  • Support for clash-lib-0.5.12
  • Fixes bugs:
    • Converting Bool to Unsigned generates broken VHDL #77

0.5.10 September 8th 2015

  • Fixes bugs:
    • Maybe (Index n) not translatable to VHDL #75

0.5.9 September 7th 2015

  • Fixes bugs:
    • Bug in VHDL ROM generation #69
    • Fix asyncRom VHDL primitive #71
    • Fix primitive for CLaSH.Sized.Internal.Signed.size# #72
    • rem and quot on Signed are broken #73

0.5.8 July 9th 2015

  • New features:
    • Generate VHDL-93 instead of VHDL-2002, the VHDL-93 standard is supported by a larger range of tools

0.5.7.1 June 26th 2015

  • Support for genStmt backend method

0.5.7 June 25th 2015

  • New features:

    • Support clash-prelude-0.9

  • Fixes bug:

    • Can not operate “shiftR” on Int #63
    • Fail to generate verilog when using “quot” and “div” on Index #64

0.5.6 June 5th 2015

  • Fixes bugs:
    • Incorrect extraction of Bool value out of a Sum-of-Product type

0.5.5 June 3rd 2015

  • New features:
    • Compile against clash-lib-0.5.6
    • Generated component names are prefixed by the name of the module containing the topEntity

0.5.4 May 10th 2015

  • New features:

    • Make VHDL ‘assert’ primitive GHDL friendly
    • Generate smarter labels for register and blockRam blackboxes to make finding longest paths easier

  • Fixes bugs:

    • Incorrect primitives for BitVector minBound and maxBound

0.5.3 May 1st 2015

  • New features:

    • Support wrapper generation

  • Fixes bugs:

    • Incorrect primitives for BitVector minBound and maxBound

0.5.2 April 24th 2015

  • Fixes bugs:
    • Fix bug where not enough array type definitions were created

0.5.1 April 20th 2015

  • Update to clash-prelude 0.7.2

0.5 March 11th 2015

  • Initial release