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Pack partial-product adder DSP48E1 packing

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This commit is contained in:
Eddie Hung 2019-08-09 15:19:33 -07:00
parent a002eba14a
commit 0b5b56c1ec
3 changed files with 81 additions and 10 deletions
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2
techlibs/xilinx/synth_xilinx.cc
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@ -287,6 +287,8 @@ struct SynthXilinxPass : public ScriptPass
if (!nodsp || help_mode) {
// NB: Xilinx multipliers are signed only
run("techmap -map +/mul2dsp.v -map +/xilinx/dsp_map.v -D DSP_A_MAXWIDTH=25 -D DSP_B_MAXWIDTH=18 -D DSP_SIGNEDONLY=1 -D DSP_NAME=$__MUL25X18", "(skip if '-nodsp')");
run("opt_expr -fine", " (skip if '-nodsp')");
run("wreduce", " (skip if '-nodsp')");
run("xilinx_dsp", " (skip if '-nodsp')");
run("chtype -set $mul t:$__soft_mul"," (skip if '-nodsp')");
}