File: implver.c

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/* Small program to determine the processor type, from */

#include <stdio.h>

const char* implname[] = {
    "21064 (EV4)",
    "21164 (EV5)",
    "21264 (EV6)"
};

int main()  {
    unsigned long implver;
    asm volatile ("implver %0" : "=r"(implver) : : "memory");

    if (implver <= 2)
        puts(implname[implver]);
    else
        puts("unknown");

    return 0;
}