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some progress in le mapping

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This commit is contained in:
Artur Swiderski 2020-10-29 01:19:20 +01:00
parent 53a95de62f
commit 42c5007cf6
4 changed files with 16 additions and 440 deletions
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9
techlibs/intel_le/common/arith_le_map.v
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@ -40,6 +40,7 @@ generate
end else begin
MISTRAL_ALUT_ARITH #(
.LUT(16'b1010_1010_1010_1010), // Q = A
.sum_lutc_input("cin")
) le_start (
.A(CI), .B(1'b1), .C(1'b1), .D0(1'b1), .D1(1'b1),
.CI(1'b0),
@ -54,7 +55,8 @@ genvar i;
generate for (i = 0; i < Y_WIDTH; i = i + 1) begin:slice
MISTRAL_ALUT_ARITH #(
.LUT(16'b0110_0110_0110_0110) // Q = A ? ~B : B
.LUT(16'b0110_0110_0110_0110), // Q = A ? ~B : B
.sum_lutc_input("cin")
) le_not_i (
.A(BI), .B(BX[i]), .C(1'b0), .D(1'b0),
.CI(1'b0),
@ -63,13 +65,10 @@ generate for (i = 0; i < Y_WIDTH; i = i + 1) begin:slice
);
MISTRAL_ALUT_ARITH #(
.LUT(16'b1001_0110_1110_1000), // SUM = A xor B xor CI
// CARRYi+1 = A and B or A and CI or B and CI
//.sum_lutc_input("cin")
.sum_lutc_input("cin")
) le_i (
.A(AA[i]), .B(BTOADDER[i]), .C(1'b1), .D(1'b1),
.CI(LE_CARRY[i]),