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* :rocket: = release
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* :rocket: = release
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| Date (*dd.mm.yyyy*) | Version | Comment |
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| Date (*dd.mm.yyyy*) | Version | Comment |
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|:----------:|:-------:|:--------|
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|:----------:|:-------:|:--------|
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| 28.01.2022 |[**:rocket:1.6.7**](https://github.com/stnolting/neorv32/releases/tag/v1.6.7) | **New release** |
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| 28.01.2022 | 1.6.6.10 | :bug: fixed bug in **bit-manipulation co-processor**: decoding collision between `cpop` and `rol` instructions; :bug: fixed bug in co-processor arbitration when an illegal instruction is detected; added four additional (yet unused) **CPU** co-processor slots; [PR #262](https://github.com/stnolting/neorv32/pull/262) |
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| 27.01.2022 | 1.6.6.9 | reworked **CFS** "user" logic; added CFS demo program; see [PR #261](https://github.com/stnolting/neorv32/pull/261) |
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| 27.01.2022 | 1.6.6.8 | :sparkles: added support for RISC-V bit-manipulation (`B`) **carry-less multiplication instructions `Zbc`** sub-extension; added test cases and intrinsics; the NEORV32 bit-manipulation ISA extension (`B`) now fully complies to the RISC-V specs. v0.93; see [PR #260](https://github.com/stnolting/neorv32/pull/260) |
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| 26.01.2022 | 1.6.6.7 | :sparkles: added support for RISC-V bit-manipulation (`B`) **single-bit instructions `Zbs`** sub-extension; added test cases and intrinsics; see [PR #259](https://github.com/stnolting/neorv32/pull/259) |
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| 26.01.2022 | 1.6.6.6 | minor logic optimizations in **CPU control unit** |
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| 25.01.2022 | 1.6.6.5 | :lock: **on-chip debugger:** the memory-mapped registers of the debug module (DM) are only accessible/visible when the CPU is actually in debug mode; any access outside of debug mode will now raise a bus exception |
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| 22.01.2022 | 1.6.6.4 | minor logic optimizations in **CPU control unit**, minor improvement of critical path |
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| 21.01.2022 | 1.6.6.3 | reworked **CPU's instruction issue engine** (area optimization: ~100 LUTs less on an Intel Cyclone IV), [PR #256](https://github.com/stnolting/neorv32/pull/256); minor CPU control unit code clean-ups and logic optimizations |
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| 18.01.2022 | 1.6.6.2 | :warning: moved `setups` folder to new [neorv32-setups](https://github.com/stnolting/neorv32-setups) repository, [PR #254](https://github.com/stnolting/neorv32/pull/254) |
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| 18.01.2022 | 1.6.6.1 | minor **MTIME** VHDL code clean-up; minor logic optimization of **CPU's bus unit** |
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| 17.01.2022 |[**:rocket:1.6.6**](https://github.com/stnolting/neorv32/releases/tag/v1.6.6) | **New release** |
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| 17.01.2022 |[**:rocket:1.6.6**](https://github.com/stnolting/neorv32/releases/tag/v1.6.6) | **New release** |
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| 14.01.2022 | 1.6.5.9 | **GPIO** module: write accesses to the GPIO module's "input" registers will now raise a bus exception; [PR #255](https://github.com/stnolting/neorv32/pull/255) |
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| 14.01.2022 | 1.6.5.9 | **GPIO** module: write accesses to the GPIO module's "input" registers will now raise a bus exception; [PR #255](https://github.com/stnolting/neorv32/pull/255) |
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| 11.01.2022 | 1.6.5.8 | minor rtl code clean-ups and edits in `rtl/core`; any write access to the SYSINFO module will now show up as a BUSKEEPER's "DEVICE_ERR" |
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| 11.01.2022 | 1.6.5.8 | minor rtl code clean-ups and edits in `rtl/core`; any write access to the SYSINFO module will now show up as a BUSKEEPER's "DEVICE_ERR" |
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| 08.01.2022 | 1.6.5.7 | :bug: fixed bug in BUSKEEPER's error type logic (introduced in version `1.6.5.4`); removed "unexpected ERR/ACK" error codes; [PR #253](https://github.com/stnolting/neorv32/pull/253) |
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| 08.01.2022 | 1.6.5.7 | :bug: fixed bug in BUSKEEPER's error type logic (introduced in version `1.6.5.4`); removed "unexpected ERR/ACK" error codes; [PR #253](https://github.com/stnolting/neorv32/pull/253) |
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| 07.01.2022 | 1.6.5.6 | :sparkles: **XIP & SPI: added high-speed SPI mode** (SPI clocking at half of the processor clock), see [PR #251](https://github.com/stnolting/neorv32/pull/251) |
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| 07.01.2022 | 1.6.5.6 | :sparkles: **XIP & SPI: added high-speed SPI mode** (SPI clocking at half of the processor clock), see [PR #251](https://github.com/stnolting/neorv32/pull/251) |
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