IBM AT 5170 Technical Reference page 228

18114 Personal Co"'pl.lter h4ACRO Ass.",bler Version 2.00 1-29
TESTI ---- 06/10/85 POWER ON SELF TEST (POST) 0&-10-85
3023 OCI! FE CO
INC AL ; I N IT I ALI ZE FOR 40X25
3024 OCI3 Ell
2,
3025 OCI3 50
-
PUSH AX
3026 OC!4
Ell 4,
302T OC 14 E9 084'&' R .lNP EI6
-
3028
3029 BOTH VIDEO CARDS FAILED SET DUMMY RETURN IF RETRACE FAILURE
3030
3031 OCIT
3032 DCIT IE PUSH OS
3033 OCIl! 2B CO SUB AX, AX ; SET OS SEGh4ENT TO 0
3034
OC I A BE DB
h4DV DS,AX
3035 OC I C 8F 0040 R MOV 01 ,OFFSET .VIDEO INT I SET INTERRUPT 10H TO DUMMY
303& OCIF CT 05 0000 E MOV WORD PTR (Dll.OFFSET DUMMY RETURN I RETURN IF NO VIDEO CARD
303T OC23 IF
POP OS ­
3038 OC24 E9 084F R .)MP E18_t I BYPASS REST OF VIDEO TEST
5-56
TESTl