quartus之LPM_DIVIDE

quartus的IP測試之LPM_DIVIDE

1、基本作用

一個用於除法的IP，可以輸入除數、被除數，得到商、余值。

2、基本測試

`timescale 1ns/1ns
module divide_tb;
    reg [7:0]denom;
    reg [7:0]numer;
    wire [7:0] quotient;
    wire [7:0] remain;

initial begin
    $monitor($realtime,,"denom=%d,numer=%d,quotient=%d,remain=%d"
    ,denom,numer,quotient,remain);
    denom=1;
    numer=1;
    #1
    denom=4;
    numer=2;
    #2
    denom=6;
    numer=0;
    #2
    denom=0;
    numer=1;
    #4
    $stop;
end

divide_top U1_top(
    .denom(denom),
    .numer(numer),
    .quotient(quotient),
    .remain(remain)
);
    

endmodule

module divide_top(
    input [7:0]    denom,
    input [7:0]    numer,
    output [7:0]    quotient,
    output [7:0]    remain
);

myip_divide U1_demo(
    .denom(denom),
    .numer(numer),
    .quotient(quotient),
    .remain(remain)
);

endmodule

# run -all
# 0 denom=  1,numer=  1,quotient=  1,remain=  0
# 1 denom=  4,numer=  2,quotient=  0,remain=  2
# 3 denom=  6,numer=  0,quotient=  0,remain=  0
# 5 denom=  0,numer=  1,quotient=  x,remain=  x
# ** Note: $stop    : D:/Library/FPGA_altera/A8_LPM_DIVIDE/standard_module/divide_tb.v(23)
#    Time: 9 ns  Iteration: 0  Instance: /divide_tb

3、使用小結

除數為0時輸出均為x，其他的和正常的整數除法的功能是一致的。