IBM XT 5160 Technical Reference page 232

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; ----- READ/WR I TE THE 8088 GENERAL AND SEGMENTATI ON REG I STERS
WITH ALL ONE'S AND ZEROES'S.
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CIO:
5-85
ENABLE PAR I TY CHECKERS AND
PULL KB CLOCK LOW, TR I-STATE
KEYBOARD INPUTS, ENABLE HIGH
BANK OF SW I TCHES->PORT C (0-3)
<> <> <> <> <> <> <> <> <> <> <> <>
<><><>CHECKPO I NT 1<><><>
SETUP SS SEG REG
SET UP DATA SEG TO POINT TO
ROM ADDRESS
SET DIRECTION FLAG TO INC.
SETUP STARTI NG ROS ADDR
SETUP RETURN ADDRESS
HAL T SYSTEM I F ERROR
DISABLE B/W VIDEO,EN HIGH RES
SET 8255 FOR B,A=OUT, C=IN
TSTIA
PATTERN MAKE IT THRU ALL REGS
NO - GO TO ERR ROUT I NE
o
I SABLE INTERRUPTS
SET SF, CF, ZF, AND AF FLAGS ON
GO TO ERROR ROUT I NE IF CF NOT SET
GO TO ERROR ROUT I NE IF ZF NOT SET
GO TO ERROR ROUT I NE IF PF NOT SET
GO TO ERROR ROUT I NE I F SF NOT SET
LOAD FLAG I MAGE TO AH
LOAD COUNT REG WITH SH I FT COUNT
SHIFT AF INTO CARRY BIT POSITION
GO TO ERROR ROUT I NE I F AF NOT SET
SET THE OF FLAG ON
SETUP FOR TEST I NG
GO TO ERROR ROUT I NE I F OF NOT SET
SET AH = 0
CLEAR SF, CF, ZF, AND PF
GO TO ERROR ROUT I NE I F CF ON
GO TO ERROR ROUT I NE I F ZF ON
GO TO ERROR ROUT I NE I F SF ON
GO TO ERROR ROUT I NE I F PF ON
LOAD FLAG I MAGE TO AH
SHIFT 'AF' INTO CARRY BIT POSITION
GO TO ERROR ROUT I NE I F ON
CHECK THAT 'OF' I S CLEAR
GO TO ERROR ROUT I NE I F ON
CONTROL BITS FOR PORT B
K/B REQUEST PENDING MASK
TSTIA
ZERO PATTERN MAKE IT THRU?
; YES - GO TO NEXT TEST
; HALT SYSTEM
ZERO IN AL ALREADY
o
I SABLE NM I INTERRUPTS
I NIT I ALZE DMA PAGE REG
; 0 I SABLE COLOR V IDEO
; SETUP ONE'S PATTERN IN AX
; WR I TE PATTERN TO ALL REGS
; TOGGLE K
I
B CLOCK
; POINT OX AT ADDR. 60 (KB DATA)
GET IRR REG
KB REQUEST PENDING?
LOOP TILL OAT A PRESENT
GET DATA
STORE IT
PO I NT OX BACK AT PORT B (6 I I
LOOP TILL ALL BYTES READ
FAR -.lUMP TO CODE THAT WAS -.lUST
LOADED
POST (01/10/86)
1-2
01-10-86
OAOH,AL
83H,AL
DX,3D8H
DX,AL
AL
DL,OB8H
DX,AL
AL,89H
CMD PORT ,AL
AL,Tol00l01B
PORT_B,AL
AL,OIH
PORT A,AL
AX,CS
SS,AX
DS,AX
CS: CODE, OS: NOTH I NG, ES: NOTH I NG, SS: NOTH I NG
OE05BH
0005BH
SS:CODE
BX,OOOOOH
SP, OFFSET C I
ROS CHECKSUM
ERROl
OUT
OUT
OUT
MOV
OUT
INC
MOV
OUT
MOV
OUT
MOV
ASSUME
ORG
ORG
MOV
OUT
MOV
MOV
MOV
CLD
ASSUME
MOV
MOV
-.IMP
-.lNE
MOV AX,OFFFFH
STC
C8: MOV DS,AX
MOV BX,DS
MOV ES,BX
MOV
CX,ES
MOV
SS,CX
MOV DX,SS
MOV SP,DX
MOV BP,SP
MOV SI,BP
MOV DI,SI
-.INC C9
XOR AX,DI
-.lNZ ERROl
CLC
-.IMP C8
C9:
OR AX,DI
-.lZ Cl0
ERROl: HLT
Cll:
; ROS CHECKSUM TEST I
; DESCRIPTION
A CHECKSUM I S DONE FOR THE 8K
ROS MODULE CaNT A I N I NG POD AND
BIOS.
; 8088 PROCESSOR TEST
; DESCRIPTION
VER I FY 8088 FLAGS, REG I STERS
AND COND I T 10NAL -.lUMPS
RESET:
START: CLI
MOV AH,OD5H
SAHF
-.INC ERRO 1
-.lNZ ERRO 1
-.lNP ERRO 1
-.INS ERRO 1
LAHF
MOV CL,5
SHR AH,CL
-.INC ERRO 1
MOV AL,40H
SHL AL,
I
-.INa ERRO 1
XOR AH,AH
SAHF
-.lBE ERRO I
-.IS ERRO I
-.lP ERRO I
LAHF
SHR AH,CL
-.lC ERROl
SHL AH, I
-.10 ERRO I
0030 BB 4CCC MOV BX,4CCCH
0040 B4 02
MOV AH,02H
0042
TST:
0042 8A C3
MOV AL,BL
0044 EE
OUT DX,AL
0045 8A C7
MOV AL,BH
0047 EE
OUT DX,AL
0048 4A
DEC OX
0049 TSTI :
0049 E4 20 IN AL,INTAOO
004B 22 C4 AND AL,AH
0040 74 FA
-.lZ TSTI
004F EC
IN AL,DX
0050 AA
STOSB
0051 42
INC OX
0052 E2 EE LOOP TST
0054 EA 0500 ---- R
-.IMP (tMFG_TEST_RTN
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141 005B
142 005B
143 005B FA
144 005C B4 05
145 005E 9E
146 005F 73 4A
147 0061 75 48
148 0063 7B 46
149 0065 79 44
150 0067 9F
151 0068 B 1 05
152 006A 02 EC
153 006C 73 3D
154 006E BO 40
155 0070 DO EO
156 0072 71 37
157 0074 32 E4
158 0076 9E
159 0077 76 32
160
161 0079 78 30
162 007B 7A 2E
163 0070 9F
164 007E 02 EC
165 0080 72 29
166 0082 DO E4
167 0084 70 25
168
169
170
171
172 0086 B8 FFFF
173 0089 F9
174 008A 8E 08
175 008C 8C DB
176 008E 8E C3
177 0090 8C C I
178 0092 8E 01
179 0094 8C 02
180 0096 8B E2
181 0098 8B EC
182 009A 8B F5
183 009C 8B FE
184 009E 73 07
185 OOAO 33 C7
186 00A2 75 07
187 00A4 F8
188 00A5 EB E3
189 OOA 7
190 00A7 OB C7
191 00A9 74 01
192 500AB F4
193
194
195
196
197
198
199
200 OOAC
20 I
202 OOAC E6 AO
203 OOAE E6 83
204 OOBO BA 0308
205 00B3 EE
206 00B4 FE CO
207 00B6 B2 B8
208 00B8 EE
209 00B9 BO 89
210 OOBB E6 63
211 OOBD BO A5
212
213 OOBF E6 61
214
215
216 OOC
I
BO 0 I
217 00C3 E6 60
218 00C5 8C C8
219 00C7 8E DO
220 00C9 8E 08
221
222 OOCB FC
223
224 OOCC BB 0000
225 OOCF BC 0016 R
226 0002 E9 18BF R
227 0005 75 04
IBM Personal Computer MACRO Assembler Version 2.00
POST ----- 01/ 1 0/86 SYSTEM POST AND BIOS PROCEDURES