This is the project changelog starting from version 1.0.0.0.
Prior versions are not documented here.
The current hardware version is available in the mimpid CSR as a four-number string (BCD encoded),
As an example, see below:
mimpid = 0x01040312 -> Version 01.04.03.12 -> v1.4.3.12
All dates are in dd.mm.yyyy format.
| Date | Version | Comment | Issue |
|---|---|---|---|
| 13.08.2024 | 1.0.0.0 | Based on version 0.9.10.1 + on-chip debugging | |
| 29.08.2024 | 1.0.0.1 | tdo = tdi when OCD is disabled, minor change in multipliers | |
| 04.09.2024 | 1.0.0.2 | Some minor changes, no real hardware changes | |
| 07.09.2024 | 1.0.1.0 | [dm] Added auto-increment on memory accesses | |
| 09.09.2024 | 1.0.1.1 | [dm] Fix bug in auto-increment calculation | |
| 17.09.2024 | 1.0.1.2 | Removed unused signal | |
| 21.09.2024 | 1.0.1.3 | Minor comment edits, moved a signal in core | |
| 27.09.2024 | 1.0.1.4 | MEPC has bit 0 set to hard 0, PC witg JARL has bit 0 set to hard 0 | |
| 30.09.2024 | 1.0.1.5 | [core] fixed handling of NMI | |
| 04.10.2024 | 1.0.2.0 | New version | |
| 19.10.2024 | 1.0.2.1 | [bootloader] Removed unused variable, renamed all variables to ending with v. [common] update function initialize_memory | |
| 22.10.2024 | 1.0.2.2 | [io] SPI1 MOSI default to 1 | |
| 28.10.2024 | 1.0.2.3 | [core] rework memory access hardware | |
| 30.10.2024 | 1.0.3.0 | New release (has wrong version number) | |
| 11.11.2024 | 1.0.4.0 | New release. [io] Removed hardware CS (NSS) from SPI1 because of limited usability. SPI2 now has interrupt (SPI1 and SPI2 are identical), fixed parity issues in UART1, minor edits. | |
| 14.11.2024 | 1.0.4.1 | [io] Removed unused flipflops in I2C1 and I2C2 | |
| 23.11.2924 | 1.0.4.2 | [riscv] Added synchronized reset for DM and DTM, [io] removed some unused memory. | |
| 08.12.2024 | 1.0.5.0 | New release. [docs] new schematic of SoC | |
| 14.12.2024 | 1.1.0.0 | New release. Completely new I/O sub-system | |
| 17.12.2024 | 1.1.0.1 | [rom_image] New ROM image | |
| 22.12.2024 | 1.1.0.2 | [core] PC bit 0 is now always 0 on JALR, [i2c] removed some redundancies | |
| 01.01.2025 | 1.1.0.3 | [i2c] Added clock stretching support | |
| 03.01.2025 | 1.1.0.4 | [i2c] Removed leadout state, it is not needed |
|
| 20.01.2025 | 1.1.0.5 | [gpio] Added Port Set and Clear registers | |
| 27.01.2025 | 1.1.0.6 | [core] Added Zbb extension, [common] added functions for use with Zbb | |
| 29.01.2025 | 1.1.1.0 | New version | |
| 09.02.2025 | 1.1.1.1 | [core] make sure that NMI is only accepted if not already executing an NMI [mtime] register access after mtime counter update |