verilog 除法器
时间: 2023-09-14 07:14:28 浏览: 35
以下是一个简单的Verilog除法器的代码实现示例:
```
module divider (
input [7:0] dividend,
input [7:0] divisor,
output reg [7:0] quotient,
output reg [7:0] remainder
);
reg [7:0] dividend_reg;
reg [7:0] divisor_reg;
reg [7:0] quotient_reg;
reg [7:0] remainder_reg;
reg [7:0] count;
always @(dividend, divisor) begin
dividend_reg <= dividend;
divisor_reg <= divisor;
quotient_reg <= 0;
remainder_reg <= 0;
count <= 0;
end
always @(posedge clk) begin
if (divisor_reg == 0) begin
quotient_reg <= 0;
remainder_reg <= dividend_reg;
end else if (dividend_reg == 0) begin
quotient_reg <= 0;
remainder_reg <= 0;
end else begin
while (dividend_reg >= divisor_reg) begin
dividend_reg <= dividend_reg - divisor_reg;
quotient_reg <= quotient_reg + 1;
end
remainder_reg <= dividend_reg;
end
quotient <= quotient_reg;
remainder <= remainder_reg;
end
endmodule
```
该除法器使用了一个简单的循环算法,在时钟上升沿触发时计算商和余数。它使用了一个除数寄存器,一个被除数寄存器,一个商寄存器,一个余数寄存器和一个计数器。当除数为0时,商为0,余数为被除数。当被除数为0时,商和余数都为0。当除数和被除数都不为0时,循环计算商和余数,直到被除数小于除数。该除法器适用于8位数据。