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

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

.sect .text
.define _insb
_insb:
        push    bp
        mov     bp, sp
        cld
        push    di
        mov     dx, 4(bp)               ! port
        mov     di, 6(bp)               ! buf
        mov     cx, 8(bp)               ! byte count
        jcxz    1f
0:      inb     dx                      ! input 1 byte
        stosb                           ! write 1 byte
        loop    0b                      ! many times
1:      pop     di
        pop     bp
        ret