source: trunk/minix/lib/i86/misc/io_outsb.s@ 9

!       outsb() - Output a byte array           Author: Kees J. Bot
!                                                               18 Mar 1996
!       void outsb(U16_t port, void *buf, size_t count);

.sect .text
.define _outsb
_outsb:
        push    bp
        mov     bp, sp
        cld
        push    si
        mov     dx, 4(bp)               ! port
        mov     si, 6(bp)               ! buf
        mov     cx, 8(bp)               ! byte count
        jcxz    1f
0:      lodsb                           ! read 1 byte
        outb    dx                      ! output 1 byte
        loop    0b                      ! many times
1:      pop     si
        pop     bp
        ret