minix/lib/i86/misc/io_inb.s
2009-11-09 10:26:00 +00:00

14 lines
223 B
ArmAsm

! inb() - Input one byte Author: Kees J. Bot
! 18 Mar 1996
! unsigned inb(U16_t port);
.sect .text
.define _inb
_inb:
push bp
mov bp, sp
mov dx, 4(bp) ! port
inb dx ! read 1 byte
xorb ah, ah
pop bp
ret