User guide

18-73
DirectC Interface
The following Verilog and C/C++ code shows how to use this routine
to fill a reg and a memory these values:
extern void filler (inout reg [7:0] r1,
inout reg [7:0] array [1:0] r2,
inout reg [7:0] array [1:0] r3);
module top;
reg [7:0] r1;
reg [7:0] r2 [1:0];
reg [7:0] r3 [1:0];
initial
begin
$display("r1 is %0b",r1);
$display("r2[0] is %0b",r2[0]);
$display("r2[1] is %0b",r2[1]);
$display("r3[0] is %0b",r3[0]);
$display("r3[1] is %0b",r3[1]);
filler(r1,r2,r3);
$display("r1 is %0b",r1);
$display("r2[0] is %0b",r2[0]);
$display("r2[1] is %0b",r2[1]);
$display("r3[0] is %0b",r3[0]);
$display("r3[1] is %0b",r3[1]);
end
endmodule
The C/C++ code for the function is as follows:
#include <stdio.h>
#include "DirectC.h"
filler(vc_handle h1, vc_handle h2, vc_handle h3)
{
scalar s = 1;
vc_FillWithScalar(h1,s);
vc_FillWithScalar(h2,0);
vc_FillWithScalar(h3,scalar_z);
}