mirror of https://github.com/YosysHQ/nextpnr.git
5bbaac8572
* 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> |
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