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98656e284b
synth_gowin guarded the mul2dsp + dsp_map path to gw1n/gw2a, so GW5A multiplies expanded to LUTs. Add a gw5a branch mapping the GW5A's three multiplier widths: $__MUL27X18 (M0 27x18) for larger multiplies, $__MUL12X12 (M1 12x12) for <=12x12 (which pack two-per-block via M0+M1), and $__MUL27X36 (27x36) for wide (B>18) multiplies. The blocks are signed-only (no per-operand sign control), so DSP_SIGNEDONLY is mandatory without it a 32x16 -1*-1 mapping yields 0x08000001 instead of 1. |
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| .. | ||
| adc.v | ||
| arith_map.v | ||
| brams.txt | ||
| brams_map.v | ||
| brams_map_gw5a.v | ||
| cells_latch.v | ||
| cells_map.v | ||
| cells_sim.v | ||
| cells_xtra.py | ||
| cells_xtra_gw1n.v | ||
| cells_xtra_gw2a.v | ||
| cells_xtra_gw5a.v | ||
| CMakeLists.txt | ||
| dsp_map.v | ||
| dsp_map_gw5a.v | ||
| lutrams.txt | ||
| lutrams_map.v | ||
| synth_gowin.cc | ||