?? it51_addsub.v
字號:
module AddSub1(
A,
B,
Sub,
Carry_In,
Res,
Carry
);
input A;
input B;
input Sub;
input Carry_In;
output Res;
output Carry;
reg Res;
reg Carry;
always @(Sub or A or B or Carry_In)
if(Sub)
{Carry,Res} = A - B + Carry_In;
else
{Carry,Res} = A + B + Carry_In;
endmodule
module AddSub3(
A,
B,
Sub,
Carry_In,
Res,
Carry
);
input [2:0] A;
input [2:0] B;
input Sub;
input Carry_In;
output [2:0] Res;
output Carry;
reg [2:0] Res;
reg Carry;
always @(Sub or A or B or Carry_In)
if(Sub)
{Carry,Res} = A - B + Carry_In;
else
{Carry,Res} = A + B + Carry_In;
endmodule
module AddSub4(
A,
B,
Sub,
Carry_In,
Res,
Carry
);
input [3:0] A;
input [3:0] B;
input Sub;
input Carry_In;
output [3:0] Res;
output Carry;
reg [3:0] Res;
reg Carry;
always @(Sub or A or B or Carry_In)
if(Sub)
{Carry,Res} = A - B + Carry_In;
else
{Carry,Res} = A + B + Carry_In;
endmodule
module AddSub8(
A,
B,
Sub,
Carry_In,
Res,
Carry
);
input [7:0] A;
input [7:0] B;
input Sub;
input Carry_In;
output [7:0] Res;
output Carry;
reg [7:0] Res;
reg Carry;
always @(Sub or A or B or Carry_In)
if(Sub)
{Carry,Res} = A - B + Carry_In;
else
{Carry,Res} = A + B + Carry_In;
endmodule
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -