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This commit is contained in:
Eddie Hung 2019-07-16 15:54:27 -07:00
parent 3f677fb0db
commit c501aa5ee8
2 changed files with 8 additions and 8 deletions
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14
techlibs/xilinx/cells_sim.v
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@ -386,15 +386,15 @@ module DSP48E1 (
output [3:0] CARRYOUT, output [3:0] CARRYOUT,
output MULTSIGNOUT, output MULTSIGNOUT,
output OVERFLOW, output OVERFLOW,
output reg [47:0] P, output reg signed [47:0] P,
output PATTERNBDETECT, output PATTERNBDETECT,
output PATTERNDETECT, output PATTERNDETECT,
output [47:0] PCOUT, output [47:0] PCOUT,
output UNDERFLOW, output UNDERFLOW,
input [29:0] A, input signed [29:0] A,
input [29:0] ACIN, input [29:0] ACIN,
input [3:0] ALUMODE, input [3:0] ALUMODE,
input [17:0] B, input signed [17:0] B,
input [17:0] BCIN, input [17:0] BCIN,
input [47:0] C, input [47:0] C,
input CARRYCASCIN, input CARRYCASCIN,
@ -494,9 +494,9 @@ module DSP48E1 (
`endif `endif
end end
reg [29:0] Ar; reg signed [29:0] Ar;
reg [17:0] Br; reg signed [17:0] Br;
reg [47:0] Pr; reg signed [47:0] Pr;
generate generate
if (AREG == 1) begin always @(posedge CLK) if (CEA2) Ar <= A; end if (AREG == 1) begin always @(posedge CLK) if (CEA2) Ar <= A; end
else always @* Ar <= A; else always @* Ar <= A;
@ -516,7 +516,7 @@ module DSP48E1 (
if (PCIN != 48'b0) $fatal(1, "Unsupported PCIN value"); if (PCIN != 48'b0) $fatal(1, "Unsupported PCIN value");
if (CARRYIN != 1'b0) $fatal(1, "Unsupported CARRYIN value"); if (CARRYIN != 1'b0) $fatal(1, "Unsupported CARRYIN value");
`endif `endif
Pr[42:0] <= $signed(Ar[24:0]) * $signed(Br); Pr[42:0] <= $signed(Ar[24:0]) * Br;
end end
generate generate

2
techlibs/xilinx/dsp_map.v
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@ -20,7 +20,7 @@ module \$__MUL25X18 (input [24:0] A, input [17:0] B, output [42:0] Y);
.PREG(0) .PREG(0)
) _TECHMAP_REPLACE_ ( ) _TECHMAP_REPLACE_ (
//Data path //Data path
.A({5'b0, A}), .A({{5{A[24]}}, A}),
.B(B), .B(B),
.C(48'b0), .C(48'b0),
.D(24'b0), .D(24'b0),