IBM AT 5170 Technical Reference page 336

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BIOSI ---- 06/10/65 INTERRUPT 15H BIOS ROUTINES
06-10-85
112
PAGE
113
(AH}
=
COH RETURN CONFIGURATION PARAMETERS POINTER
114
RETURNS
115
(AH) = OOH AND CV: 0 (IF PRESENT ELSE 66 AND CY= 1 )
II.
(ESIBX)'
=
PARAMETER TABLE ADDRESS POINTER
117
WHERE:
118
11. OW 8
LENGTH OF FOLLOW
I
NG TABLE
120
DB MODEL BYTE
SYSTEM MODEL BYTE
121
DB TYPE BYTE SYSTEM MODEL TYPE BYTE
122
DB BIOS:LEVEL BIOS REVISION LEVEL
123 Da
, 0000000
=
OMA CHANNEL 3 USE BY BIOS
124
01000000 = CASCADED INTERRUPT LEVEL
2
125
00100000 = REAL TIME CLOCK AVAILABLE
12.
00010000
=
KEYBOARD SCAN CODE HOOK IAH
127
Da RESERVED
128 Da RESERVED
12'
Da
RESERVEO
130 Da
RESERVED
131
132
133
134
ASSUME
CS:COOE
135
13. 0000
CASSETTE ID I PROC FAR
137 0000 FB
sn-
ENABLE INTERRUPTS
138 000 I
60 FC 80 CNP
AH,080H
CHECK FOR RANGE
13' 0004 72 4E CI
RETURN IF 00-lFH
"a
140 0006 60 FC CO
CNP AH,OCOH CHECK FOR CONF I GURAT I ON PARAMETERS
141 0009 14
~I
CONF FARMS
"E
142 OOOB 60 EC 80
sua
AH,OBOH BASE ON 0
143
OOOE OA E4
DR AH,AH
144 0010 14 48
"Z
DEV
OPEN ~ DEVICE OPEN
145
0012 FE CC DEC AH
-
14. 0014 74 44
"Z
DEV CLOSE DEV (CE CLOSE
141
0016 FE CC DEC AH
-
148 0016 14 40
"Z
PROG_ TERM PROGRAM TERMINATION
14.
OOlA FE CC DEC AH
150 OOIC 74 47
"Z
EVENT_WAIT
EVENT WA IT
151 ODIE FE CC
DEC AH
152 0020 75 03
ND7 JOYSTICK
"NZ
153 0022 E9 0000 R
"NP
- STICK
.JOYSTICK BIOS
-
"0'
154 0025
NOT_JOYSTICKI
155
0025 FE CC DEC AH
IS. 0021 74 31
"Z
SYS_REQ SYSTEM REQUEST KEY
151 0029 FE CC DEC AH
158 002B 14 01
"Z
CI WAIT
15'
0020 FE CC
DEC AH
-
A
,.0
002F 75 06
"NZ
CI
a
0031 E9 OlCA R
"NP
BLOCKMOVE MOVE BLOCK
,.2
163 0034 E9 016A R CI AI
"NP WAIT
WAIT
'.,
-
'.4
'.5
0037 FE CC
CI BI DEC AH
I ••
-
,.7
0039 75 03
CI C
'.8 "NP
003B E9 03EE R
"N'
EXT_MEMORY ; GO GET THE EXTENOEO MEMORY
I . '
170 003E FE CC CI CI
DEC AH
171 0040 75 03
-
CI D
CHECK FOR FUNCT I ON 89H
"N'
172 0042 E9 03F A R
"NP
SET_VMOoE SWAP TO V I RTUAL MOOE
173
174 0045 60 EC 01 CI DI
SUB
AH,l
CHECK FOR FUNCT I ON 90H
175 0046 15 03
CI E GO IF NOT
-
"N'
17. 004A E9 0483 R
"NP DEVICE_BUSY
177
178 0040 FE CC CI EI
DEC AH CHECK FOR FUNCT I ON 8BH
17. 004F 75 03
CI
GO IF NOT
180 0051 E9 0461 R
"NP INT_CqMPLETE
-
"N'
181
182
0054 B4 86
CI =
NOV AH, B6H SET BAD COMMAND
183
0056 F9 STC
SET CARRY FLAG ON
184
0051 CI
- F,
185 0057 CA 0002
RET FAR RETURN EXIT FROM ROUTINES
18.
187
188 005A DEV_OPEN:
; NULL HANDLERS
18.
190
005A
oEV_CLOSE:
191
,.2
005A PROG_TERMI
"3
194
OOSA
SYS REQ:
'.5
005A EB FB
- .JMP
CI F
RETURN
I •• 005C
CASSETTE_IO_I ENDP
197
198 005C
CONF FARMS PROC NEAR
I ••
005C OE
- PUSH
CS
GET CODE SEGMENT
200 0050 07 PDP
ES
PLACE I N SELECTOR PO INTER
201 OOSE BB
0000 E
NOV
ex,
OFF SET CONF TBL GET OFFSET OF PARAMETER TABLE
202 0061 32 E4 XOR AH,AH -
CLEAR AH AND SET CARRY OFF
203
0063 EB F2
""P
CI
F
EX I T THROUGH COMMON RETURN
204 0065 CONF _PARMS
ENDP
205
20. 0065 EVENT WA I T
PROC NEAR
207
- ASSUME
oS:oATA
208 0065 IE
PUSH OS SAVE
20'
0066 E6 0000 E CALL
DDS
210 0069 OA CO
OR AL,AL
211 006B 74 08 EVENT WA IT 2
GO I F ZERO
212 0060 FE C8
"'
DEC CHECK IF 1
AL - ­
213
006F 14 45
EVENT WAIT 3
-
215 0072 F9
5TC SET CARRY
21. 0071 IF
"'
POP
OS -
RESTORE DATA SEGMENT
21.
0013 EB E2
"NP CI_F EXIT
217
218 0015
EVENT WAIT 2:
21'
0075 FA - CLI
NO I NTERRUPTS ALLOWED
220 0016 F6 06 OOAO R 01 TEST
(lRTC WAIT FLAG,OI CHECK FOR FUNCT I ON ACT
J
VE
221 0018 74 as
EVEN'i'_WAIT_'
"Z
222
0010 FB
STI
ENABLE INTERRUPTS
223 001E IF
PDP OS
224 001F F9
STC
SET ERROR
225 OOBO EB os
"NP
RETURN
5-164 BIOSt