IBM AT 5170 Technical Reference page 209

IBM Parsonal COlllputar MACRO Assalllb I ar Vars I on 2.00
1-10
TESTI ---- 06/10/65 POWER ON SELF TEST (POST)
06-10-65
.57 PAGE
.5.
CHECK FOR SHUTDOWN 09
659 0091
~;~~--
660 0091 80 6F
NOV AL,CMOS SHUT DOWN+NMI
CMOS ADDRESS FOR SHUTDOWN BYTE
661 0093 E6 70
OUT
CMOS PORT,AL­
662 0095 E8 00 1+2 -
DELAY
"NP
1/0
663 0097 E4 71
IN
AL,CMOS DATA GET REQUEST NUMBER
664 0099 3C 09
CNP
AL,09H -
WAS IT SHUTDOWN REQUEST 97
665 0098 66 C4
XCHG AL,AH
SAVE THE SHUTDOWN REQUES T
666 0090 74 41
C7C BYPASS INITIALIZING INTERRUPT CHIPS
•• 7
"E
...
CHECK FOR SHUTDOWN OA
•• 9
670 009F 60 FC OA
CNP AH,OAH WAS I T SHUTDOWN REQUEST A?
671 00A2 74 3C
C7C BYPASS INITIALIZING INTERRUPT CHIPS
.72
"E
673 00A4 2A CO
SUB AL,AL
INSURE MATH PROCESSOR RESET
674 00A6 E6 FI OUT X267+ 1 ,AL
.75
.7.
;
- -- -
-
- - - - - - - - - - - - - - -- - - - - -
-
- - - - - - - - - - - - - - - - - - - - - - - - - - -- ­
; RE-INITIALIZE THE 6259 INTERRUPT '1 CONTROLLER CHIP:
." .7.
679 00A6 80 II
NOV AL,11H ICW1 - EDGE, MASTER, ICW4
660 OOAA E6 20
OUT INTAOO,AL
661 OOAC E8 00
"NP '>2
WAIT STATE FOR 1/0
662 OOAE 80 06
NOV
AL,06H
SETUP ICW2 - INTERRUPT TYPE 6H 16-F)
663 0080 E6 21 OUT INTAOI,AL
664 0082 E8 00
"NP
'>2
WA I T STATE FOR 1/0
665 0084 80 04
NOV
AL,04H
SETUP ICW3 - MASTER LEVEL 2
666 0086 E6 21
OUT INTAOI,AL
667 0086 E8 00
"NP '>2
1/0 WAIT STATE
666 008A 80 0 I
NOV AL,OIH SETUP ICW4 - MASTER,6066 MODE
669 008C E6 21
OUT INTAOI,AL
690 008E E8 00
"NP '>2
WA I T STATE FOR 1/0
691 OOCO 80 FF
NOV AL,OFFH MASK ALL I NTERRUPTS OFF
692 00C2 E6 21
OUT INTAOI,AL
(VIDEO ROUTINE ENABLES INTERRUPTS)
.93
;-------------------------------------------------------- ­
.9•
; RE-INITIALIZE THE 6259 INTERRUPT .2 CONTROLLER CHIP :
• 95
;-------------------------------------------------------- ­
696 00C4 80 II
MDV AL,IIH ICW1 - EDGE, SLAVE ICW4
697 00C6 E6 AO OUT I NTBOO, AL
696 00C6 E8 00
..JMP 1+2 WAIT STATE FOR 1/0
699 OOCA 80 70
MOV AL, INT TYPE SETUP ICW2 - INTERRUPT TYPE 70 (70-7F)
900 OOCC E6 A I
OUT INTBOl7AL
901 OOCE 80 02
MOV AL,02H
SETUP ICW3 - SLAVE LEVEL 2
902 0000 E8 00
JMP 1+2
903 0002 E6 A I OUT INTBOI,AL
904 0004 E8 00
..JMP 1+2 1/0 DELAY
905 0006 BO 0 I
MOV AL,OIH
SETUP ICW4 - 6066 MODE, SLAVE
906 0006 E6 A I
OUT INTBOI,AL
907 OODA EB 00
JMP 1+2 WA I T STATE FOR 1/0
906 OODC BO FF
MOV AL,OFFH MASK ALL I NTERRUPTS OFF
909 OODE E6 A I OUT INTBOI,AL
9"
;
--
- - - - - - - - - -
------
-
------------
- - - - -
-
- - - -
-
-
-
- --- - - - - - - - - - - - --
-
-
--
- --- - - - -
--
- -
- ­
; SHUTDOWN - RESTART
912
; RETURN CONTROL AFTER A SHUTDOWN COMMAND I S ISSUED
913 ; DESCRIPTION
91' ; A TEST I S MADE FOR THE SYSTEM FLAG BE I NG SET. I F THE SYSTEM FLAG IS
915
; SET, THE SHUTDOWN BYTE ] N CMOS I S USED TO DETERM I NE WHERE CONTROL IS
9"
91.
; RETURNED.
,
9"
91.
,
CMOS
=
0 SOFT RESET OR UNEXPECTED SHUTDOWN
919
,
CMOS
=
1 SHUT DOWN AFTER MEMORY SIZE
920
,
CMOS
=
2 SHUT DOWN AFTER MEMORY TEST
921
,
CMOS
=
3 SHUT DOWN WITH MEMORY ERROR
922
,
CMOS
=
4
SHUT DOWN WITH 800T LOADER REQUEST
923
,
CMOS
=
5 ..JMP OWORO REQUEST - (INTERRUPT CHIPS & 267 ARE INITIALIZED)
92.
,
CMOS
=
6
PROTECTED MODE TEST3 PASSED
925
,
CMOS
=
7 PROTECTED MODE TEST3 FAILED
92.
,
CMOS
=
6 PROTECTED MODE TESTI FA ILED
927
,
CMOS
=
9 BLOCK MOVE SHUTDOWN REQUEST
92.
,
CMOS
=
A ..JMP OWORO REQUEST - (W/O INTERRUPT CHIPS INITIALIZED)
929
,
930
,
NOTES: RETURNS ARE MADE WITH INTERRUPTS AND NMI DISABLED.
931
,
USER MUST RESTORE SS:SP (POST DEFAULT SET
=
0000:0400),
932
,
ENABLE NON-MASKABLE INTERRUPTS (NM I) WITH AN OUT TO
933
,
PORT 70H WITH HIGH ORDER BIT OFF, AND THEN I SSUE A
93.
,
ST I TO ENABLE INTERRUPTS. FOR SHUTDOWN (5) THE USER
935
I
MUST ALSO RESTORE THE INTERRUPT MASK REGISTERS.
93.
;------------------------------------------------------------------------------­
937
93.
CHECK FROM WHERE
939 OOEO
940 OOEO BO 6F
NOV AL, CMOS SHUT OOWN+NM I CLEAR CMOS BYTE
941 00E2 E6 70
OUT CMOS_PORT,AL­
942 00E4 90
Nap 1/0 DELAY
943 00E5 2A CO
SUB AL.AL
SET BYTE TO 0
944 00E7 E6 71
OUT
945 00E9 66 EO
XCHG
;~~~CDATA,AL
946 OOEB 3C OA
CNP AL,OAH COMPARE WITH MAXIMUM TABLE ENTRIES
947 OOED 77 34
SHUTO SKIP TO POST IF GREATER THAN MAXIMUM
"A
946 OOEF BE 0 I 03 R
NOV S I .OFFSET 8RANCH POINT TO THE START OF THE BRANCH TABLE
949 00F2 03 FO
AOO SI.AX
950 00F4 03 FO
AOO
SI,AX
POINT TO BRANCH ADDRESS
951 00F6 2E: 6B IC
NOV BX,CS: [SI]
MOVE BRANCH TO ADDRESS TO BX REG I STER
952
953 SET TEMPORARY STACK FOR POST
95.
955 00F9 B6 ---- R
NOV AX.ABSO I SET STACK SEGMENT TO ABSO SEGMENT
956 OOFC 6E DO NOV
SS,AX
957 OOFE 8C 0400 R
NOV SP, OFFSET CIITOS SET STACK POINTER TO END OF VECTORS
956 0101 FF E3
"NP
BX
JUMP BACK TO RETURN ROUTI NE
959
960 0103 0123 R
BRANCH: OW SHUTO NORMAL POWER UPIUNEXPECTED SHUTDOWN
961 0105 0990 R Ow
SHUTI SHUT DOWN AFTER MEMORY SIZE
962 0107 0000 E
Ow
SHUT2 SHUT DOWN AFTER MEMORY TEST
963 0109 0000 E Ow
SHUT3 SHUT DOWN WITH MEMORY ERROR
964 0108 0000 E
Ow
SHUT4 SHUT DOWN WITH BOOT LOADER REQUEST
965 01000119 R Ow
SHUT5 JMP DWORD REQUEST WTTH I NTERRUPT I NIT
966 OIOF 0000 E Ow
SHUT6 PROTECTED MODE TEST7 PASSED
967 0111 0000 E
Ow
SHUT7 PROTECTED MODE TEST7 FA] LED
966 01 13 0793 R
Ow
SHUT6
PROTECTED MODE TESTI FAILED
969 0115 0000 E Ow
SHUT9 BLOCK MOVE SHUTDOWN REQUEST
970 0117 0 llF R Ow
SHUTA JMP DWORD REQUEST (W/O INTERRUPT INIT)
TEST1
5-37