nextpnr/himbaechel
YRabbit 5bbaac8572
Gowin. Implement GW5A DSP. (#1641)
* Gowin. DSP. Implement MULT12x12.

The 5A series DSP differs from previous ones. Many things have been
greatly simplified: there are only two control signals of one type per
cell (2 CLK, 2 CE and 2 RESET), and these signals are now explicitly
specified in the DSP attributes, which makes the automatic assignment
mechanism unnecessary for them.

The DSP occupies 3 cells instead of nine due to the exclusion of 4
low-bit multipliers - now there are only two 12x12. There will naturally
be clusters, but they will be simpler and consist of other primitives.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>

* Gowin. Implement MULTADDALU12X12.

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>

---------

Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
2026-02-20 07:48:22 +01:00
..
himbaechel_dbgen himbaechel: Extend API to enable cell delay override (#1535) 2025-08-20 06:32:18 +02:00
uarch Gowin. Implement GW5A DSP. (#1641) 2026-02-20 07:48:22 +01:00
.gitignore himbächel: Initial implementation 2023-05-13 08:26:41 +02:00
CMakeLists.txt Gatemate FPGA initial support (#1473) 2025-04-22 16:41:01 +02:00
arch.cc himbaechel: fix parsing vopt memory issue (#1614) 2025-12-12 14:11:34 +01:00
arch.h himbaechel: add uarch specific options parsing (#1582) 2025-10-21 14:41:53 +02:00
arch_pybindings.cc himbaechel: Add Python binding for get_tile_wire_range 2025-06-25 18:37:17 +02:00
arch_pybindings.h himbächel: Initial implementation 2023-05-13 08:26:41 +02:00
archdefs.h Add GroupId related calls to Himbaechel API (#1399) 2024-12-05 13:59:33 +01:00
chipdb.h himbaechel: Extend API to enable cell delay override (#1535) 2025-08-20 06:32:18 +02:00
himbaechel_api.cc himbaechel: Extend API to enable cell delay override (#1535) 2025-08-20 06:32:18 +02:00
himbaechel_api.h himbaechel: add uarch specific options parsing (#1582) 2025-10-21 14:41:53 +02:00
himbaechel_constids.h himbächel: Initial implementation 2023-05-13 08:26:41 +02:00
himbaechel_gfxids.h Add GroupId related calls to Himbaechel API (#1399) 2024-12-05 13:59:33 +01:00
himbaechel_helpers.cc himbaechel: Add support for new constants API 2023-11-07 09:00:03 +01:00
himbaechel_helpers.h clangformat 2024-09-30 14:51:33 +02:00
main.cc himbaechel: add uarch specific options parsing (#1582) 2025-10-21 14:41:53 +02:00