#include <sys/io.h>
#include <stdio.h>

void dump_regs(int base) {
    int i;
    for(i=0; i<16; i++) {
        printf("[%x]=%02x", i, inb(base+i));
        if(i % 4 == 3) printf("\n"); else printf("  ");
    }
}

int main(int argc, char **argv) {
    int base = 0xc000;
    int offset = 0xc0;
    int count = 256;

    system("sync");
    iopl(3);

    dump_regs(base);
    outb(0x21, base);   // PIB reset high, 15 cycle operation
    outb(0x20, base);   // PIB reset low, 15 cycle operation
    outb(0x10, base+3); // relay off (active-high), cs low
    outb(0x11, base+2); // relay, CS# as outputs
    
    outb(0x00, base+offset+3*4);

    dump_regs(base);

    printf("Doing %d reads at 0x%4x\n", count, base+offset);

    for(;;count--) {
        int v = inb(base+offset);
        if(count % (2<<8-1) == 0 || v != 0) {
            printf("%02x %02x\n", v, count); fflush(stdout);
        }
        for(v=0; v<20; v++)
            outb(0x80, 0x80);
    }

    dump_regs(base);

    return 0;
}