IBM AT 5170 Technical Reference page 236

IBM Personal Computer' MACRO Assembler Version 2.00 1-7
TEST2 ---- 06/10/85 POST TESTS AND INITIALIZATION ROUTINES 06-10-85
b85
I BACK TO REAL MODE
686 0364 E9 0000 E
J"P PROC _SHUTDOWN ; NExT TEST VIA ,JUMP TABLE ISHUT21
b81
b88
b89 PRINT FAILING ADDRESS AND XOR'ED PATTERN IF DATA COMPARE ERROR
b90
USE DMA PAGE REG I STERS AS TEMPORARY SAVE AREA FOR ERROR
b91
SET SHUTDOWN 3
b92
693 0367 E6 62
E21 A: OUT DMA PAGE+l,AL SAVE FAILING BIT PATTERN (LOW BYTE)
694 0369 8A C4
"OV
AL,AH SAVE HIGH 8YTE
&95 0368 E6 83 OU1
DMA PAGE+2, AL
696 0360 8B C6
"OV
AX,SI GET THE FAILING OFFSET
697 036F E6 86
OUT DMA PAGE+5,AL
698 037 I 86 EO XCHG
AH,AL
699 0373 E6 65 OUT
DMA_PAGE+4,AL
700
101
CLEAR 110 CHANNEL CHECK OR RIW PAR I TY CHECK
102
703 0375 2B F6
SUB SI,SI WRITE TO FAILING BLOCK
704 0311 A8
STOSW
705 0318 E4 61
IN AL,PORT B GET PARITY CHECK LATCHES
106 037A E6 88
OUT DMA PAGE+7,AL
SAVE FOR ERROR HANDLER
101 037C OC OC OR
AL, RAM PAR OFF
TOGGLE lID-PARITY CHECK ENABLE
708 037E E6 61
OUT
PORT e"7AL -
TO RESET CHECKS
709 0360 24 F3 AND AL,RAM PAR ON
7 I 0 0382 E6 61
OUT PORT_8:AL ­
111
112
1-----
GET THE LAST OF GOOD MEMORY
113
714 0384 58 POP
AX CLEAR BLOCK COUNT
115 038558 POP
AX
GET THE LAST OF GOOD MEMORY
716 0386 58 POP BX GET BASE MEMORY COUNTER
717 0387 C I E3 06
SHL BX,6
CONVERT TO MEMORY SIZE COUNTS
116 038A 2B C3
SUB AX,8X
COMPARE LAST GOOD MEMORY WI TH BASE
719 038C 13 11 JAE
E211
IF A80VE OR EQUAL, USE REMA I NDER IN
720 CMOS_U_M_S_ (HILI
721
ELSE SET BASE MEMORY SIZE
122
123
038E 6A 18
PUSH BYTE PTR RSDA PTR
SET THE DATA SEGMENT
12'
0390 IF POP OS - I N PROTECTED MODE
125
72b
0391 03 C3 ADD AX,8X CONVERT 8ACK TO LAST WORK ING MEMORY
727
0393 A3 0013 R
NOV ...MEMORY_SIZE,AX
TO INDICATE HOW MUCH MEMORY WORKING
728
729
RESET 512K
-->
640K OPT I ON I F SET
130
131
0396 B8 8383
MOV AX,X* (CMOS INFOI28+NMI)
ADDRESS OPT IONS I NFORMAT I ON 8YTE
132
0399 E8 0000 E CALL CMOS READ - READ THE MEMORY INFORMATION FLAG
133
039C 24 7F
AND AL, NOT M640K SET 640K OPT I ON OFF
134 039E 86 C4 XCHG AL, AH MOVE TO WORK REGI STER
135 03AO E8 0000
E
CALL CMOS WRITE UPDATE STATUS IF IT WAS ON
13b 03A3 33 CO
XOR AX,AX
CLEAR VALUE FOR EXTENSION MEMORY
131 03A5 E211 :
138 03A5 8B C8
MOV CX,AX
SAVE ADJUSTED MEMORY SIZE
139 03A1'
80
Bl MOV AL,CMOS U M S HI+NMI
140 03A9 E8 0000 E CALL CMOS WRITE - - SAVE THE HIGH BYTE MEMORY SIZE
141 03AC 8A EI MOV AH,CC GET THE LOW BYTE
142 03AE BO BO MOV AL,CMOS U M S LO+NMI DO THE LOW BYTE
143 03BO E8 0000 E CALL CMOS_WRITE - - WRITE IT
144
145 SET SHUTDOWN 3
14b
747 0383 B8 038F
MOV AX,3*H+CMOS SHUT DOWN+NMI
ADDRESS FOR SHUTDOWN RETURN
148 038& E8 0000 E CALL CMOS_WR I TE - - SET RETURN 3
149
150 SHUTDOWN
151
152 0389 E9 0000 E ..IMP PROC_SHUTDOWN
5-64
TEST2