Subversion Repositories Shiroi

/* $Id: io.c 8 2024-08-28 16:29:15Z nishi $ */

#include "io.h"

unsigned char inp(unsigned char port) __naked {
__asm
        ld      hl,#2
        add     hl,sp
        ld      c,(hl)
        in      a,(c)
        ld      l,a
        ld      h,#0
        ret
__endasm;
}

void outp(unsigned char port, unsigned char data) __naked {
__asm
        push bc
        ld      hl,#4
        add     hl,sp
        ld      c,(hl)
        inc     hl
        ld      b,(hl)
        out     (c),b
        pop     bc
        ret
__endasm;
}