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use DFF RAM mode

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This commit is contained in:
Pepijn de Vos 2022-07-02 20:44:59 +02:00
parent 0641ff47d9
commit 6f56ad298c
1 changed files with 4 additions and 1 deletions
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5
gowin/pack.cc
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@ -715,6 +715,8 @@ void pack_sram(Context *ctx)
for (int i = 0; i < 4; i++) { for (int i = 0; i < 4; i++) {
ram_comb[i] = create_generic_cell(ctx, id_SLICE, ram_comb[i] = create_generic_cell(ctx, id_SLICE,
ci->name.str(ctx) + "$SRAM_SLICE" + std::to_string(i)); ci->name.str(ctx) + "$SRAM_SLICE" + std::to_string(i));
ram_comb[i]->params[id_FF_USED] = 1;
ram_comb[i]->params[id_FF_TYPE] = std::string("RAM");
sram_to_slice(ctx, ci, ram_comb[i].get(), i); sram_to_slice(ctx, ci, ram_comb[i].get(), i);
} }
// Create 'block' SLICEs as a placement hint that these cells are mutually exclusive with the RAMW // Create 'block' SLICEs as a placement hint that these cells are mutually exclusive with the RAMW
@ -722,7 +724,8 @@ void pack_sram(Context *ctx)
for (int i = 0; i < 2; i++) { for (int i = 0; i < 2; i++) {
ramw_block[i] = create_generic_cell(ctx, id_SLICE, ramw_block[i] = create_generic_cell(ctx, id_SLICE,
ci->name.str(ctx) + "$RAMW_BLOCK" + std::to_string(i)); ci->name.str(ctx) + "$RAMW_BLOCK" + std::to_string(i));
ramw_block[i]->params[id_FF_TYPE] = std::string("RAMW_BLOCK"); ram_comb[i]->params[id_FF_USED] = 1;
ramw_block[i]->params[id_FF_TYPE] = std::string("RAM");
} }
// Disconnect ports of original cell after packing // Disconnect ports of original cell after packing