source:
trunk/minix/lib/i86/misc/io_inb.s@
9
| Last change on this file since 9 was 9, checked in by , 13 years ago | |
|---|---|
| File size: 223 bytes | |
| Rev | Line | |
|---|---|---|
| [9] | 1 | ! inb() - Input one byte Author: Kees J. Bot |
| 2 | ! 18 Mar 1996 | |
| 3 | ! unsigned inb(U16_t port); | |
| 4 | ||
| 5 | .sect .text | |
| 6 | .define _inb | |
| 7 | _inb: | |
| 8 | push bp | |
| 9 | mov bp, sp | |
| 10 | mov dx, 4(bp) ! port | |
| 11 | inb dx ! read 1 byte | |
| 12 | xorb ah, ah | |
| 13 | pop bp | |
| 14 | ret |
Note:
See TracBrowser
for help on using the repository browser.
