rohd_hcl 0.2.1

The ROHD Hardware Component Library (ROHD-HCL): a collection of reusable, configurable ROHD components.

0.2.1

• New Components:
  • Added an integer DotProduct component (https://github.com/intel/rohd-hcl/pull/243).
  • Added a ResettableEntries capability allowing us to initialize memories (https://github.com/intel/rohd-hcl/pull/253).
  • Added a new value type, SignMagnitudeValue, to use in testing (https://github.com/intel/rohd-hcl/pull/232/) and potentially for components.
• Added constraint generation to random() for FixedPointValuePopulator and FloatingPointValuePopulator which allows for generating random values in those types constrained by a fixed range, inclusive or exclusive (gte, gt, lt, lte), and in the case of FloatingPointValue, normal or subnormal numbers in that range (https://github.com/intel/rohd-hcl/pull/232/).
• Improved SystemVerilog output:
  • Improved default Module definition and instance naming throughout (https://github.com/intel/rohd-hcl/pull/227).
  • Improved output of SystemVerilog internal signal names throughout (https://github.com/intel/rohd-hcl/pull/237, https://github.com/intel/rohd-hcl/pull/244).
• Added FixedPointValue and FloatingPointValue operators including negation, and comparison.
  • For FixedPointValue this is a deprecating change as previous operators returned LogicValue and their future operators will return bool (https://github.com/intel/rohd-hcl/pull/232/). For now, bool return methods are provided for transitioning: .ltBool, .lteBool, .gtBool, and .gteBool. They will be deprecated in the future for operator <, operator <=, operator > and operator >=, respectively.
• Added dynamic sign extension capability to ReductionTree (https://github.com/intel/rohd-hcl/pull/246/).
• Bug fixes:
  • Fixed bug (https://github.com/intel/rohd-hcl/issues/239) denormals-as-zero (DAZ) support when computing effective subtraction in floating point addition.
  • Fixed build failure (https://github.com/intel/rohd-hcl/issues/240) in MultiplyAccumulate.
• Updates for current ROHD version 0.6.6 (https://github.com/intel/rohd/releases/tag/v0.6.6) compatibility:
  • Updated FIFO to return the LogicType instead of just Logic (https://github.com/intel/rohd-hcl/pull/254), leveraging ROHD 0.6.6's addTypedInput and addTypedOutput capabilities.
  • Fixed use of deprecated Port (https://github.com/intel/rohd-hcl/pull/231), which is now Logic.port in ROHD.
  • Updated implementations of Interface classes to add the required clone() method (https://github.com/intel/rohd-hcl/pull/245)
• Improved internal code documentation to use more references of types (https://github.com/intel/rohd-hcl/pull/223).

0.2.0

• Added extensive variable-width floating-point support:
  • Added support classes FloatingPointLogic and FloatingPointValue (https://github.com/intel/rohd-hcl/pull/97), (https://github.com/intel/rohd-hcl/pull/110), (https://github.com/intel/rohd-hcl/pull/131), (https://github.com/intel/rohd-hcl/pull/156), (https://github.com/intel/rohd-hcl/pull/175), (https://github.com/intel/rohd-hcl/pull/134).
  • Added FloatingPointAdder abstract component API with implementations FloatingPointSinglePathAdder and FloatingPointDualPathAdder (https://github.com/intel/rohd-hcl/pull/106), with pipelining (https://github.com/intel/rohd-hcl/pull/126), (https://github.com/intel/rohd-hcl/pull/182).
  • Added explicit J-Bit option for FloatingPointValue and FloatingPointLogic (https://github.com/intel/rohd-hcl/pull/193) as well as in the FloatingPointAdderSinglePath and FloatingPointAdderDualPath. This allows for unnormalized floating-point representation by storing the leading '1' or j-bit in the mantissa.
  • Modified FloatingPointValue and FloatingPointLogic to support denormal-as-zero (DAZ) and flush-to-zero (FTZ) (https://github.com/intel/rohd-hcl/pull/212/). Implemented in FloatingPointAdderSinglePath and FloatingPointAdderDualPath.
  • Added FloatingPointConverter component (https://github.com/intel/rohd-hcl/pull/123), (https://github.com/intel/rohd-hcl/pull/161) to convert between different widths of FloatingPointLogic.
  • Added FloatingPointMultipler base API with FloatingPointMultiplierSimple implementation component (https://github.com/intel/rohd-hcl/pull/152), (https://github.com/intel/rohd-hcl/pull/160).
  • Added square root components for floating-point (https://github.com/intel/rohd-hcl/pull/188).
• Added fixed-point support classes FixedPointLogic and FixedPointValue (https://github.com/intel/rohd-hcl/pull/99), (https://github.com/intel/rohd-hcl/pull/132), (https://github.com/intel/rohd-hcl/pull/167), (https://github.com/intel/rohd-hcl/pull/172), (https://github.com/intel/rohd-hcl/pull/208).
• Added StaticOrRuntimeParameter configuration class which provides API support for configuration of a hardware feature within a component using a single parameter for either static configuration with a bool or dynamic configuration with a Logic signal (https://github.com/intel/rohd-hcl/pull/214).
• Added AXI4 interface with functional model (https://github.com/intel/rohd-hcl/pull/159).
• Added Control Status Register capabilities (https://github.com/intel/rohd-hcl/pull/151), (https://github.com/intel/rohd-hcl/pull/205), (https://github.com/intel/rohd-hcl/pull/197).
• Added Sum and Counter components (https://github.com/intel/rohd-hcl/pull/89) which are fully-featured capabilities to track counters with multiple inputs and various options to handle overflow.
• Added Serializer and Deserializer components (https://github.com/intel/rohd-hcl/pull/92) which handle marshalling and unmarshalling of data onto wider or narrower interfaces.
• Added ReductionTree module and ReductionTreeGenerator component (https://github.com/intel/rohd-hcl/pull/155), (https://github.com/intel/rohd-hcl/pull/180), (https://github.com/intel/rohd-hcl/pull/204) which allow generalized reduction operations of arbitrary radix with pipelining.
• Added Extrema component (https://github.com/intel/rohd-hcl/pull/93).
• Added clock gating componentry (https://github.com/intel/rohd-hcl/pull/96), (https://github.com/intel/rohd-hcl/pull/111).
• Added fast RecursiveModulePriorityEncoder (https://github.com/intel/rohd-hcl/pull/178) to complement ParallelPrefixPriorityEncoder.
• Added OnesComplementAdder component (https://github.com/intel/rohd-hcl/pull/85).
• Added CompoundAdder and CarrySelectOnesComplement adder components (https://github.com/intel/rohd-hcl/pull/98), (https://github.com/intel/rohd-hcl/pull/178).
• Added extensive integer multiplication support:
  • Added multiplier componentry such as parameterizable Booth-encoders, different kinds of sign extension on a partial-product array, delay-driven Wallace tree compression, and selection of differnt kinds for final adders (https://github.com/intel/rohd-hcl/pull/85).
    • Added special visualization of partial-product arrays for debug (https://github.com/intel/rohd-hcl/pull/102), (https://github.com/intel/rohd-hcl/pull/107).
    • Added support for pipelining (https://github.com/intel/rohd-hcl/pull/118), (https://github.com/intel/rohd-hcl/pull/137), (https://github.com/intel/rohd-hcl/pull/138).
    • Added support for rectangular multiplication and multiple kinds of sign extension (https://github.com/intel/rohd-hcl/pull/154).
  • Added components CompressionTreeMultiplier and CompressionTreeMultiplyAccumulate supporting signed and unsigned operands, both statically and logically controlled, rectangular multiplication, Booth encoding with radices 2,4,8, and 16, delay-driven Wallace tree, and configurable final adder, all with exhaustive narrow-width testing (https://github.com/intel/rohd-hcl/pull/144).
  • Added wrapper class NativeMultiplier (https://github.com/intel/rohd-hcl/pull/125).
• Added integer MultiCycleDivider (https://github.com/intel/rohd-hcl/pull/87), (https://github.com/intel/rohd-hcl/pull/117), (https://github.com/intel/rohd-hcl/pull/129), (https://github.com/intel/rohd-hcl/pull/141).
• Added Parallel Prefix Tree components: adding ParallelPrefixAdder, ParallelPrefixEncoder, ParallelPrefixIncr, ParallelPrefixDecr and ParallelPrefixOrScan (https://github.com/intel/rohd-hcl/pull/77), fixing Issue (https://github.com/intel/rohd-hcl/issues/12). The types of prefix trees supported are Kogge-Stone, Sklansky, Brent-Kung, and Ripple.
• Added Ready-Valid Bus Functional Model (https://github.com/intel/rohd-hcl/pull/69).
• Added HammingEccTramsitter and HammingEccReceiver componentry with SECC/SEDDED/SECDED, and SEDDEDTED (https://github.com/intel/rohd-hcl/pull/74).
• Added BinaryToGray and GrayToBinary conversion components (https://github.com/intel/rohd-hcl/pull/54).
• Added EdgeDetector component (https://github.com/intel/rohd-hcl/pull/75).
• Added Serial Peripheral Interface componentry and functional modeling (https://github.com/intel/rohd-hcl/pull/148).
• Added Find-Nth component (https://github.com/intel/rohd-hcl/pull/187).
• Modified ShiftRegister component to support async reset and different stage reset values (https://github.com/intel/rohd-hcl/pull/105).
• Modified tree form of OneHotToBinary to add error generation (https://github.com/intel/rohd-hcl/pull/211).
• Fixed bugs in FifoChecker sampling at clock edges that caused failures. (https://github.com/intel/rohd-hcl/pull/70).
• Updated ApbTracker for configurable widths and data (https://github.com/intel/rohd-hcl/pull/71).
• Breaking: ParityTransmitter deprecates parity for code,checkError for error and originalData for data.
• Fixed memory model for read-after-write or read on non-zero latency (https://github.com/intel/rohd-hcl/pull/72).
• Fixed bug in SparseMemoryStorage (https://github.com/intel/rohd-hcl/pull/195).
• Improved MemoryStorage read (https://github.com/intel/rohd-hcl/pull/176).
• Added online schematic generation in the web generator application using yoWASP (WebAssembly form of the yosys logic synthesis tool) and d3schematics graphics (SVG) generation (https://github.com/intel/rohd-hcl/pull/84).
• Modified code to be compatible with ROHD 0.6.0 (https://github.com/intel/rohd-hcl/pull/150).
• Modified code to be lint-compatible with Dart 3.8 (https://github.com/intel/rohd-hcl/pull/202).
• Updated flutter to version 3.27.0 (https://github.com/intel/rohd-hcl/pull/212/).
• Added flutter to devcontainer (https://github.com/intel/rohd-hcl/pull/79).
• Fixed documentation linting to be compatible with Dart 3.3.0 and above (https://github.com/intel/rohd-hcl/pull/80).

0.1.0

• The first formally versioned release of ROHD-HCL.