Encore SIM EDITOR SOFTWARE Guia do Utilizador descarregar pdf (Página 100)

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Modeling Your Design

2. A nested begin block executes only if the current scope is either

top.c1 or top.c3.

3. VCS displays whether $activeinst points to a zero or non-zero

value.

The C code is as follows:

#include <stdio.h>

void showInst(unsigned str_arg)

{

const char *str = (const char *)str_arg;

printf("DirectC: [%s]\n", str);

}

Function showInst declares the char pointer str and assigns to it

the value of its parameter, which is the pointer in $activeinst in

the Verilog code. Then with a printf statement it displays the

hierarchical name that str is pointing to. Notice that the function

begins the information it displays with DirectC: so that you can

differentiate it from what VCS displays.

During simulation VCS and the C function display the following:

DirectC: [top.c1]

for instance top.c1 the pointer is non-zero

DirectC: [top.c2]

DirectC: [top.c3]

for instance top.c3 the pointer is non-zero

DirectC: [top.c4]

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Encore SIM EDITOR SOFTWARE Guia do Utilizador Página 100