| Line 31... |
Line 31... |
* :rocket: = release
|
* :rocket: = release
|
|
|
|
|
| Date (*dd.mm.yyyy*) | Version | Comment |
|
| Date (*dd.mm.yyyy*) | Version | Comment |
|
|:----------:|:-------:|:--------|
|
|:----------:|:-------:|:--------|
|
|
| 09.03.2022 | [**:rocket:1.6.9**](https://github.com/stnolting/neorv32/releases/tag/v1.6.9) | **New release** |
|
|
| 09.03.2022 | 1.6.8.12 | CPU core: minor code clean-up |
|
|
| 08.03.2022 | 1.6.8.11 | clean-up of CPU's privilege mode logic |
|
|
| 07.03.2022 | 1.6.8.10 | added compressed floating-point instructions (`Zfinx` ISA extensions); minor optimization of compressed instruction decoding logic |
|
|
| 05.03.2022 | 1.6.8.9 | CPU core: minor optimizations, code clean-ups and edits; :sparkles: added RISC-V `mstatus.TW` bit to allow/disallow execution of `wfi` instruction in user mode; [PR #285](https://github.com/stnolting/neorv32/pull/285) |
|
|
| 02.03.2022 | 1.6.8.8 | :bug: fixed bug in layout of CPU's `pmpaddr` CSRs (**physical memory protection**); [PR #283](https://github.com/stnolting/neorv32/pull/283) |
|
|
| 01.03.2022 | 1.6.8.7 | CPU core: minor optimizations, code clean-ups and edits |
|
|
| 26.02.2022 | 1.6.8.6 | :warning: :lock: **reworked Physical Memory Protection (PMP)**: replacing `NAPOT` mode by `TOR` mode and fixing several minor PMP CSR-access bugs; maximum number of PMP regions is now limited to 16 entries; :warning: removed **BUSKEEPER's NULL address check** (introduced in version `1.6.5.4`) - use a single PMP entry instead; see [PR #281](https://github.com/stnolting/neorv32/pull/281) |
|
|
| 25.02.2022 | 1.6.8.5 | minor BUSMUX (bus multiplexer for CPU's instruction and data buses) and CPU control edits (pipeline front-end) |
|
|
| 24.02.2022 | 1.6.8.4 | :bug: **fixed bug in `mip` CSR** (introduced in version `1.6.4.6` with [#236](https://github.com/stnolting/neorv32/pull/236)): to clear/ack a pending interrupt software needs to **clear** the according `mip` bit; see [PR #280](https://github.com/stnolting/neorv32/pull/280) |
|
|
| 24.02.2022 | 1.6.8.3 | reworked CPU's data path (use a few _wide_ multiplexers instead of many small ones); [PR #279](https://github.com/stnolting/neorv32/pull/279) |
|
|
| 23.02.2022 | 1.6.8.2 | CPU logic optimizations (less area): simplified CPU co-processor interface; minor optimization of bus unit access arbiters; optimized `M` extension's (mul/div co-processor) divider unit |
|
|
| 18.02.2022 | 1.6.8.1 | minor CPU control logic optimizations: simplified execute engine; faster execution of SYSTEM instructions (one cycle less) |
|
| 17.02.2022 |[**:rocket:1.6.8**](https://github.com/stnolting/neorv32/releases/tag/v1.6.8) | **New release** |
|
| 17.02.2022 |[**:rocket:1.6.8**](https://github.com/stnolting/neorv32/releases/tag/v1.6.8) | **New release** |
|
| 17.02.2022 | 1.6.7.10 | hardwired `dcsr.stopcount` to `1`: all standard counters (`[m]cycle[h]` and `[m]instret[h]`, but **NOT** `[m]time[h]`!!) and all hardware performance monitor (HPM) counters are _stopped_ when the CPU is in debug mode; [PR #277](https://github.com/stnolting/neorv32/pull/277) |
|
| 17.02.2022 | 1.6.7.10 | hardwired `dcsr.stopcount` to `1`: all standard counters (`[m]cycle[h]` and `[m]instret[h]`, but **NOT** `[m]time[h]`!!) and all hardware performance monitor (HPM) counters are _stopped_ when the CPU is in debug mode; [PR #277](https://github.com/stnolting/neorv32/pull/277) |
|
| 16.02.2022 | 1.6.7.9 | :warning: **added custom `mxisa` CSR replacing SYSINFO's `NEORV32_SYSINFO.CPU` memory-mapped register**: bit-positions remain but names and the actual access mechanism (CSR vs. memory-mapped) have changed! see [PR #276](https://github.com/stnolting/neorv32/pull/276) |
|
| 16.02.2022 | 1.6.7.9 | :warning: **added custom `mxisa` CSR replacing SYSINFO's `NEORV32_SYSINFO.CPU` memory-mapped register**: bit-positions remain but names and the actual access mechanism (CSR vs. memory-mapped) have changed! see [PR #276](https://github.com/stnolting/neorv32/pull/276) |
|
| 11.02.2022 | 1.6.7.8 | :test_tube: added newlib's system calls (stubs) and linker script symbols for heap memory to support **dynamic memory allocation** (e.g. `malloc`) and even **standard IO functions** like `printf`; see [PR #275](https://github.com/stnolting/neorv32/pull/275) |
|
| 11.02.2022 | 1.6.7.8 | :test_tube: added newlib's system calls (stubs) and linker script symbols for heap memory to support **dynamic memory allocation** (e.g. `malloc`) and even **standard IO functions** like `printf`; see [PR #275](https://github.com/stnolting/neorv32/pull/275) |
|
| 10.02.2022 | 1.6.7.7 | :sparkles: added **RISC-V hardware trigger module** to CPU - allows to set _hardware breakpoints_ (via gdb's `hb`/`hbreak` command) to debug code from ROM; see [PR #274](https://github.com/stnolting/neorv32/pull/274); :bug: minor bug fix in `ebreak` instruction's `dcsr.cause` value (was 0b010 but has to be 0b001) |
|
| 10.02.2022 | 1.6.7.7 | :test_tube: added **RISC-V hardware trigger module** to CPU - allows to set _hardware breakpoints_ (via gdb's `hb`/`hbreak` command) to debug code from ROM; see [PR #274](https://github.com/stnolting/neorv32/pull/274); :bug: minor bug fix in `ebreak` instruction's `dcsr.cause` value (was 0b010 but has to be 0b001) |
|
| 08.02.2022 | 1.6.7.6 | :warning: renamed default branch of repository to `main` |
|
| 08.02.2022 | 1.6.7.6 | :warning: renamed default branch of repository to `main` |
|
| 07.02.2022 | 1.6.7.5 | removed default values for bi-directional top entity ports `twi_sda_io` and `twi_scl_io` |
|
| 07.02.2022 | 1.6.7.5 | removed default values for bi-directional top entity ports `twi_sda_io` and `twi_scl_io` |
|
| 05.02.2022 | 1.6.7.4 | added `err_o` signal to **IMEM** module; if the IMEM is implemented as true ROM any write attempt will raise a _store access fault_ exception (with a `[DEVICE_ERR]` error); see [PR #273](https://github.com/stnolting/neorv32/pull/273) |
|
| 05.02.2022 | 1.6.7.4 | added `err_o` signal to **IMEM** module; if the IMEM is implemented as true ROM any write attempt will raise a _store access fault_ exception (with a `[DEVICE_ERR]` error); see [PR #273](https://github.com/stnolting/neorv32/pull/273) |
|
| 03.02.2022 | 1.6.7.3 | :test_tube: using `LTO` (link-time-optimization) option for **bootloader**; improved bootloader user console; see [PR #268](https://github.com/stnolting/neorv32/pull/268) |
|
| 03.02.2022 | 1.6.7.3 | :test_tube: using `LTO` (link-time-optimization) option for **bootloader**; improved bootloader user console; see [PR #268](https://github.com/stnolting/neorv32/pull/268) |
|
| 31.01.2022 | 1.6.7.2 | :bug: fixed minor bug in **bootloader's MTIME handling** (bootloader crashed if `Zicntr` ISA extension not enabled), fixed minor issues in MTIME and `time` CSRs handling; added MTIME example program; see [PR #267](https://github.com/stnolting/neorv32/pull/267) |
|
| 31.01.2022 | 1.6.7.2 | :bug: fixed minor bug in **bootloader's MTIME handling** (bootloader crashed if `Zicntr` ISA extension not enabled), fixed minor issues in MTIME and `time` CSRs handling; added MTIME example program; see [PR #267](https://github.com/stnolting/neorv32/pull/267) |
|
