mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-09-28 12:19:01 +00:00
Code Activity

xilinx: cleanup DSP48E1 handling for abc9

Browse source
This commit is contained in:
Eddie Hung 2020-03-04 11:28:14 -08:00
parent f65fc845e5
commit 512596760b
3 changed files with 125 additions and 86 deletions
Download patch file Download diff file Expand all files Collapse all files

45
techlibs/xilinx/abc9_map.v
View file

@ -771,38 +771,15 @@ module DSP48E1 (
.RSTM(RSTM),
.RSTP(RSTP)
);
generate
wire [29:0] $A;
wire [17:0] $B;
wire [47:0] $C;
wire [24:0] $D;
wire [47:0] $PCIN;
if (PREG == 0) begin
if (MREG == 0 && AREG == 0) assign $A = A;
else assign $A = 30'bx;
if (MREG == 0 && BREG == 0) assign $B = B;
else assign $B = 18'bx;
if (MREG == 0 && DREG == 0) assign $D = D;
else assign $D = 25'bx;
if (CREG == 0) assign $C = C;
else assign $C = 48'bx;
assign $PCIN = PCIN;
end
else begin
assign $A = 30'bx, $B = 18'bx, $C = 48'bx, $D = 25'bx, $PCIN = 48'bx;
end
if (USE_MULT == "MULTIPLY" && USE_DPORT == "FALSE")
$__ABC9_DSP48E1_MULT dsp_comb(.$A($A), .$B($B), .$C($C), .$D($D), .$P($P), .$PCIN($PCIN), .$PCOUT($PCOUT), .P(P), .PCOUT(PCOUT));
else if (USE_MULT == "MULTIPLY" && USE_DPORT == "TRUE")
$__ABC9_DSP48E1_MULT_DPORT dsp_comb(.$A($A), .$B($B), .$C($C), .$D($D), .$P($P), .$PCIN($PCIN), .$PCOUT($PCOUT), .P(P), .PCOUT(PCOUT));
else if (USE_MULT == "NONE" && USE_DPORT == "FALSE")
$__ABC9_DSP48E1 dsp_comb(.$A($A), .$B($B), .$C($C), .$D($D), .$P($P), .$PCIN($PCIN), .$PCOUT($PCOUT), .P(P), .PCOUT(PCOUT));
else
$error("Invalid DSP48E1 configuration");
endgenerate
$__ABC9_DSP48E1 #(
.AREG(AREG),
.BREG(BREG),
.CREG(CREG),
.DREG(DREG),
.MREG(MREG),
.PREG(PREG),
.USE_DPORT(USE_DPORT),
.USE_MULT(USE_MULT)
) dsp_comb (
.$A(A), .$B(B), .$C(C), .$D(D), .$P($P), .$PCIN(PCIN), .$PCOUT($PCOUT), .P(P), .PCOUT(PCOUT));
endmodule