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overflow fix

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This commit is contained in:
k0rrluna
2024-12-21 15:36:58 +03:00
parent 4363a50662
commit 9102d27bab
9 changed files with 1703 additions and 2851 deletions
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7
project0.2/subtractionTB.v
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@@ -3,8 +3,7 @@ module subtractionTB;
reg [3:0] A, B;
reg BorrowIN;
wire [3:0] Y;
wire BorrowOut;
wire overflow;
wire BorrowOUT;
// Instantiate the subtraction module
subtraction uut (
@@ -12,8 +11,7 @@ subtraction uut (
.B(B),
.BorrowIN(BorrowIN),
.Y(Y),
.BorrowOut(BorrowOut),
.overflow(overflow)
.BorrowOUT(BorrowOUT)
);
initial begin
@@ -26,6 +24,7 @@ initial begin
// Apply test cases
#10 A = 4'b0110; B = 4'b0010; BorrowIN = 0; // A = 6, B = 2
#10 A = 4'b0010; B = 4'b0110; BorrowIN = 0; // A = 2, B = 6
#10 A = 4'b1100; B = 4'b0100; BorrowIN = 0; // A = -4, B = 4
#10 A = 4'b1000; B = 4'b1000; BorrowIN = 0; // A = -8, B = -8
#10 A = 4'b1111; B = 4'b0001; BorrowIN = 1; // A = -1, B = 1, with borrow input