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[CHANGELOG] added v1.6.2.11

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stnolting 2021-10-29 16:50:10 +02:00
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@ -26,6 +26,7 @@ defined by the `hw_version_c` constant in the main VHDL package file [`rtl/core/
| Date (*dd.mm.yyyy*) | Version | Comment |
|:----------:|:-------:|:--------|
| 28.10.2021 | 1.6.2.11 | :sparkles: added `Zba` bit-manipulation sub-extension; :warning: removed configuration option for `B` sub-extensions: removed `CPU_EXTENSION_RISCV_Zbb` generic and according SYSINFO flag, added new `CPU_EXTENSION_RISCV_B` generic (to implement bit-manipulation `B` ISA extension with _all_ currently supported subsets), see [PR #190](https://github.com/stnolting/neorv32/pull/190) |
| 27.10.2021 | 1.6.2.10 | :bug: CPU control unit: fixed _imprecise_ illegal instruction exceptions - `MEPC` and `MTAVL` did not reflect the correct exception-causing data for illegal ALU-class (non-multi-cycle like `SUB`) operations; optimized critical path of exception logic (illegal compressed instruction detection) |
| 27.10.2021 | 1.6.2.9 | CPU control unit: minor logic optimization - `fence.i` instruction needs 1 cycle less to execute, reduced HW footprint of control engine, shortened CPU's critical path (PC update logic) |
| 26.10.2021 | 1.6.2.8 | :bug: bootloader: fixed bug in stack pointer initialization (introduced in version `1.6.2.7`); minor SPI unit VHDL code clean-up |