IBM 5150 Hardware Reference Manual page 197

LOC OBJ
LINE SOURCE
0068 ?!
155
De
;LAST INPUT VALUE
156
157 1----------------------------________________
158 ; TIMER DATA AR € A
159 -----------------__________________________ _
Ot6C ?1!'!
160 TlI1ER_LOW 0"
j
lOW WORD OF TIMER COUHT
006£ ????
161
TIMER_HIGH
ow
; HIGH WORD OF TIMER COUNT
0070 ?!
162
TINER_OFL
De
; TIMER HAS ROllED OVER SINCE LAST READ
163 ;COUNTS.SEC lOU
18
16'
,COUNTS.NIH EQU
1092:
165
iCOUtlTS_HOUR lOU 65543
166
; COUNTS_DA.Y EOU
1513040
=
1800BOH
167
168
i ------------------------- ________________ • __
169 ; SYSTEM DATA AREA
170 ; --- - - ----------____________________________ _
0071
??
171
BIOS_BREAK DB
; BIT 7
=
1 IF BREAK HY HAS BEEN DEPRESSED
0072 ???? 172
RESET_FLAG
OW
; WORD = 1234H IF KEYBOARD RESET UNDERWAY
173
OATA
WOS
174
175 ;
-----~-':'
_ _:.•.---. ____________________________ _
176
J
EXTRA
DATA AREA
177 1--------------------- ----------------------­
'0050 178 XXDATA SEGMENT AT 50H
O~OO
11
179 STATUS_BYTE DB
18. XXOATA ENDS
181
18Z ; ------------------------------------------- ­
183 J VIDEO DISPUY BUFFER
184 ; -------- -- - -- - - - - - - - - ------ ---- ---- --- --- --­
8800
18S VIDEO_RAM SEGMENT AT OBaOOH
'0000 186
REGEN LABEL BYTt
0000
187
REGENW LABEL WORD
(1000 (16}84
??)
188
DB
1638't
DUPl?)
189 ENIlS
190
i ---------- -------- ----------------------- ­
191 ;
ROM RESIDENT CODE
19' ;
----------------------
---
----------------
-­
fOOD 193
CODE SEGMENT AT OFOOOH
0000 (51344 111
19. DB 57344 DUP(?)
j
FI LL LOWEST 56K
,
195
:EOOO 35373030303531 196
08 '5700051 CDPR. IBM 1981' I COPYRIGHT NOTICE
20434F50522E20
49424020313938
31
197
198 ; ------------------- ------------------------­
199
j
INITIAL RELIA8ILITY TESTS -- PHASE 1
200 ; --- - - - - - - --- - ------ - -- - - - -- - ------------- -- ­
201 ASSUME CS:COOE,SS:COOE,ES:ABSO,OS:DATA
202 ; ------------- ------ ------------------------­
203
DATA DEfINITIONS
2.04 J - - ---- -- ----------- - -- ----- - ---------- -- - --­
E016 D8EO
205
Cl
Cll
• RETURN ADDRESS
0"
E016 EDEI
'06
C' 0"
C"
i PETlmtl ADDRESS FOR DUMMY STACK
207 ; ---- ----- ---------- --- - --- ------------ - - ---­
lOS THIS SUBROUTINE PERFORMS A READ/WRITE STOOAGE TEST ON A 16K 8LOCK
209
OF STORGAGE.
210 ;ENTRY REQUIREMEtHS:
211
ES
=
ADDPESS OF STORAGE SEGt!EHT eEING TESTED
21Z
OS
=
ADDRESS OF STORAGE SEGMENT BEING TESTED
Z13 \oIHEH EHlERltIG AT STGTST_CHT. CX MUST BE LOADED WITH THE BYTE COUNT.
Z14 .EXIT PARAtlETERS:
ZIS ZERO
HAG
=
<l
If
STORAGE ERROR (DATA COMPARE OR PARITY
CHECK.
AL::O
216 DENOTES A PARITY CHECK. ELSE AL=XOR' EO 8IT PATTERN OF THE
217 EXPECTED DATA
PATTERt~
VS THE ACTUAL DATA READ.
216 Ax.eX,CX.DX,DI, Atm 51 ARE ALL DESTROYED.
Zl'jl i ------------------------------------------- ­
EOIA 2Z0 STGTST PROC NEAR
E01A 890040
tlOV CX.4000H iSETUP tNT TO TEST A 16K BlK
E010 STGTST_Ctn:
'"
'"
EOID Fe
223
ClO ;SET 011'1 FLAG TO ItICREMENT
EOlE 8809
2'4
f10V
BX.CX
,SAVE BYT!: tNT (4K fOR VIOEO OR 16K I
E020 B8FfFF HOV
AX.OFFFFH
;6ET DATA PATTERN TO URITE
E023 BA55AA
226
HOV
OX.OAA55H
;SETUP OTHER DATA PATTERNS TO USE
E026 2BFF
"7
SUB
OI.OI
iDI
=
OffSET 0 PELAlIVE TO ES REG
EOZ8 F3 228 PEP
STOSE\
;WRITE STORAGE LOCATIONS
E029 AA
'25
A-4