IBM AT 5170 Technical Reference page 266

IBM Pe,-sonal Computer MACRO A,sembler VerSion 2.00
1-2
TEST6 ---- 06/10/85 POST TESTS AND SYSTEM BOOT STRAP 06-10-85
".
,----- PARITY ERROR EXIT
II.
111 0069 B6 0000
MOV
AX,O RESTORE AX TO 0000
116 006C151A
JNZ CI3 GO IF YES
'"
120
1----- CHECK FOR END OF 64K BLOCK
121
122 006E 23 02 AND
OX,OX END I NG ZERO PATTERN WR I TTEN TO MEMORY?
123 0010 14 16
JZ CI3 YES - RETURN TO CALLER WITH AL=O
12'
12S
,----- SETUP NEXT PATTERN
12.
127
oon
81 FA 55AA
CNP OX,OSSAAH CHECK
I
F LAST PATTERN =55AA
128 0076 74 OB
JZ
C.
GO IF NOT
129 007881 FA 0101 CMP
OX,OIOIH LAST PATTERN 0 I 0 11
130 007C 74 OB
JZ
CIO GO IF YES
131 007E BA 55AA
"OV
OX,055AAH WR I TE 55AA TO STORAGE
132 0081 EB C9
JMP
C3
133
13. ;----- INSURE PARITY BITS ARE NOT STUCK ON
13.
136 0063 BA 0101 C9, NOV
DX,OIOIH ; WR ITE 0101 TO STORAGE
131 0086 EB C4
JNP C3
13.
13.
;----- EX
I T
STORAGE TEST
140 0066
C13:
141 0066 C3 RET
ERROR IF ZF NOT SET
"2
"3
;----- CHECKER BOARD TEST
I.,
145 0089 2B FF
CIO= SUB
OJ ,01
POINT TO START OF BLOCK
146 006B 8B CB MDV
CX,BX
GET THE BLOCK COUNT
147 0060 01 E9 5HR CX,I
DIVIDE BY 2
148 008F B6 AAAA NOV
AX, 1010 I 0' 0 I
a
I 0 1 0 1 OB SECOND CHECKER PATTERN
149 0092 BE 5555 NOV
SI.OIOIO! 01 0 1 0 I 0 1 0 I B
FIRST CHECKER PATTERN
150 0095
CII =
151 0095 96
XCHG AX.SI FIRST CHECKER PATTERN TO AX
152 0096 AB STOSW
WRITE IT TO MEMORY
153 009"/ 96
XCHG AX,SI SECOND CHECKER PATTERN TO AX
t
54 0096 AB
STOS. WRITE IT TO MEMORY
\ 55 0099 E2 FA
LOOP CII DO I T FOR CX COUNT
15.
15"/ 009B 28 F6
SUB 51,51
POINT TO START OF BLOCK
156 0090 88 CB NOV
CX,8X GET THE BLOCK COUNT
159 009F D
I
E9
SHR CX, I DIVIDE BY 2
160 OOA I BF 5555 NOV
DI,Ol01010101010101B CHECK CORRECT
161 OOM BA AAAA NOV
OX, 1 0 I 0 I 0 I 0' -0 1
a
I 0 1 OB
162 OOAl
C12:
163 OOAl AD
LOOSW GET THE DATA
164 00A8 33 C1
XOR
AX,Dl CHECK CORRECT
165 OOAA 15 DC JNZ
CI3 EXIT IF NOT
I ••
161 OOAC AD
LODS.
GET NEXT DATA
168 OOAD 33 C2
XDR
AX.OX CHECK SECOND FA TTERN
169 OOAF E 1 F6 LOOPZ CI2
CONT I NUE TILL DONE
lla
111 OOBI 15 05
JNZ CI3 J ERROR EXIT IF' NOT CORRECT
172
113
CHECK FOR 110 OR BASE MEMORY PARITY CHECK
174
115 00B3 E4 61
IN AL,PORT B ; CHECK FOR I/O-PAR
I
TY CHECK
116 00B5 86 C4 XCHG AL,AH - ; SAVE ERROR
t
11 OOBl E4 87
IN AL,DMA PAGE+6 ; CHECK FOR R/. OR 110 ERROR
\ 18 00B9 22 EO AND AH,AL ­
179
,.0
;----- CHECKPOINT 32 FOR ADDRESS LINE 0->15 FAILURE
,.,
182 OOBB BO 32
NOV
AL,32H I <><> <><><><><><> <> <> <> <>
'83 OOBO E6 80
OUT tr.!F'G PORT,AL I <><> CHECKPOINT 32 <><>
164 OOBF B8 0000 NOV
AX,a ; RESTORE AX I SET AX TO ZERO)
185 00C2 75 C4
JNZ CI3 ; EXIT IF' PARITY ERROR
16.
167
;----- 64K ADDRESS TEST AND FILL WITH ZERO
166
t
89 OOC4 48
DEC AX WRITE FIRST AND LAST LOCATION=FFFF
\ 90 00C5 2B FF
SUB 01.01 • PO I NT TO START OF BLOCK
191 OOCl 8B CB MOV
cx.ex
; GET THE BLOCK COUNT
192 00C9 83 E9 02
SUB CX,2 I DO ALL LOCATiONS BUT LAST
193 OOCC AB STOSW 1 WRITE FIRST LOCATION AS FFFFH
194 OOCO 40
INC AX I WRITE ZERO
195 OOCE F31 AS
REP STQSW ; WRITE IT
196 0000 48
DEC AX LAST WORD IS FFFF
191 0001 AS
STOSW
! 98 0002 2B F6 SUB
51,51 PO I NT TO START OF BLOCK
199 0004 8B CB
MOV CX,BX GET THE BLOCK COUNT
200 0006 83 E9 02
5U8 CX,2
201 0009 AD
LODS.
GET THE DATA
202 OOOA 35 FFFF XDR
AX,OFFFFH CHECK CORRECT
203 0000 75 A9 JNZ
C13 EXIT IF NOT
204 OOOF CI2A:
20S OOOF AD
LODSW GET NEXT DATA
206 OOEO OB CO
OR
AX,AX
ANY BIT ON
i"
20"/ 00E2 EI FB LOOPZ
CI2A CONT I NUE TILL LAST WORD
208 00E4 15 A2 JNZ CI3 GO I F NOT CORRECT
209 00E6 AD LOOSW
GET LAST WORD
210 00E7 35 FFFF
XOR AX.OFFFFH SIB FFFF
211 OOEA "/5 9C JNZ
CI3 EXIT IF NOT
212
213
CLEAR WORD
0
AND FFFE
21.
215 OOEC 2B FF
SUB 01,01 J CLEAR FIRST WORD
216 OOEE AB
STasw
217 OOEF BF FFFE NOV
DI,OFFFEH J CLEAR TOP WORD
218 00F2 AB STOSW
21.
22a
J ----- CHECK FOR I 10
OR BASE MEMOR Y
221
222 OOF3 E4 61
IN AL.FORT 8 CHECK FOR 110 - PAR I TY CHECK
223 00F5 86 C4 XCHG AL,AH -
SAVE ERROR
224 oaF1 E4 81
IN AL,OMA PAGE+6 CHECK FOR R/W OR 1/0 ERROR
225 00F9 22 EO
AND AH.AL ­
226 OOFB B8 0000 MDV
AX,O SET AX EQUAL lERO
227 OOFE EB 88 JNP
CI3
ERROR EX I T IF ZF NOT SET
228 0100
STGTST_CNT ENDP
5-94
TEST6