cos2000v1/programs/isa.asm

43 lines
676 B
NASM
Raw Normal View History

2019-07-13 20:49:22 +02:00
use16
align 1
include "..\include\mem.h"
include "..\include\divers.h"
org 0h
2005-12-05 09:17:18 +01:00
start:
2019-07-09 18:30:00 +02:00
header exe 1
realstart:
retf
2005-12-05 09:17:18 +01:00
PNP_ADR_PORT equ 0x279
PNP_WRITE_PORT equ 0xA79
;MIN and MAX READ_ADDR must have the bottom two bits set
MIN_READ_ADDR equ 0x203
MAX_READ_ADDR equ 0x3FF
;READ_ADDR_STEP must be a multiple of 4
READ_ADDR_STEP equ 8
;bits
CONFIG_WAIT_FOR_KEY equ 0x02
CONFIG_RESET_CSN equ 0x04
IDENT_LEN equ 9
;renvoie le timer en ax
ctc:
cli
mov dx,043h
mov al,0
out dx,al
mov dx,40h
in al,dx
mov ah,al
in al,dx
2005-12-05 09:17:18 +01:00
sti
ret
;attend pendant ax microsecondes
usleep: