IBM AT 5170 Technical Reference page 349

IBM Personal Computer M"CRO "ssembler Veralon 2.00
'-2
8IOS2 ---- 06/10/85 810S
114
115 0031
116 0031 "0 0010 R
117 0034 C6
Ob 0070 R 00
118 0039 88
OE
006E R
1 19 0030 88 I b 006C R
120 0041 C3
121
122 0042
123 0042 89 16 006C R
124 004b 89 OE 006E R
125 004" C6 06 0070 R 00
126 004F C3
127
128 0050
129 0050 E8 0168 R
130 0053 72 1 F
131
132 0055 80 00
133 0057 E8 0000 E
134 005" 8A FO
135 005C 80 08
13b 005E E8 0000 E
137 OOb I 24 01
138 00b3 8A DO
139 00b5 80 02
140 00b7 E8 0000 E
141 006" 8A C8
142 006C 80 04
143 006E E8 0000 E
144 0071 8" E8
145 0073 F8
146 0074
147 0074 C3
148
149 0075
150 0075 E8 0168 R
151 0078 13 03
152 001A E8 0154 R
153 0070
154 0010 8" E6
155 00 lF 80 00
15b 0081 E8 0000 E
151 0084 8" EI
158 0086 80 02
159 0088 E8 0000 E
160 0088 8A E5
\61 0080
eo
04
162 008F E8 0000 E
163 0092 88 0808
164 0095 E8 0000 E
165 0098 24 62
166 009" OC 02
167 009C 80 E2 01
168 009F OA C2
Ib9 00"1 86 EO
110 00A3 E8 0000 E
111 OOAb F8
172 00A7 C3
173
174 00A8
175 00A8 E8
a
I 68 R
176 00A8 12 10
177
178 OOAD 80 07
179 OOAF E8 0000 E
180 0082 8A DO
181 0084 80 08
182 0086 E8 0000
E
183 0089 8A FO
184 0088 80 09
185 0080 E8 0000 E
186 OOCO 8A C8
1151 00C2 80 32
188 00C4 E8 0000 E
189 OOCl 8A E8
190 00C9 F8
191 OOCA
192 OOCA C3
193
194 OOC8
195 00C8 E8 0168 R
196 OOCE 73 03
191 0000 E8 0154 R
f 98 0003
199 0003 88 0006
200 OOob E8 0000 E
201 0009 8A E2
202 0008 80 OT
203 0000 E8 0000 E
204 OOEO 8A E6
205 00E2 80 08
206 00E4 E8 0000 E
201 00E7 8A El
208 00E9 80 09
209 OOES E8 0000 E
210 OOEE 8A E5
211 OOFO BO 32
212 00F2 E8 0000 E
213 00F5 B8 OBOB
214 00F8 E8 0000 E
215 00F8 24 7F
216 OOFD 86 EO
217 OOFF £8 0000 E
218 0102 F8
219 0103 C3
22.
221 0104
222 0104 80 08
223 0 I 06 E8 0000 E
224 0109 A8 20
225 0 I OB F9
226 01 OC 75 33
227
INTERRUPT ROUTINES
PAGE
RTC_OO PROC
MOV
MOV
MOV
MOV
RET
MOV
MOV
MOV
RET
CALL
JC
MOV
CALL
MOV
MOV
CALL
ANa
MOV
MOV
CAL.L.
MOV
MOV
CAL.L.
MOV
CLC
RET
CALL
JNC
CALL.
MOV
MOV
CAL.L.
MOV
MOV
CALL
MOV
MOV
CAL.L.
MOV
CALL
ANa
OR
ANa
OR
XCHG
CALL.
CLC
RET
CALL
JC
MOV
CALL
MOV
MOV
CALL
MOV
MOV
CALL.
MOV
MOV
CAL.L
MOV
CLC
RET
CALL
JNC
CALL
MOV
CAL.L
MOV
MOV
CALL.
MOV
MOV
CALL
MOV
MOV
CAL.L.
MOV
MOV
CALL
MOV
CALL
ANa
XCHG
CALL
CLC
RET
MOV
CALL
TEST
STC
JNZ
06-10-85
NEAR READ T I ME COUNT
AL.OT I MER OFL GET THE OVERFLOW FLAG
OTIMER orC,o
AND THEN RESET THE OVERFLOW FLAG
CX,OTlMER HIGH
GET COUNT OF TIME HJGH WORD
OX,
or
I MER:LOW GET COUNT OF' TI ME LOW WORD
RETURN WITH
NO
CARRY
SET T I ME COUNT
SET TiME COUNT LOW WCRo
SET THE T I ME COUNT HIGH WORD
RESET OVERFL.OW FLAG
RETURN WITH NO CARRY
GET RTC TIME
UPO IPR
CHECK FOR UPOA TE I N PROCESS
RTC:29 EXIT IF ERROR ICY=
II
SET ADDRESS OF SECONDS
~~O;M~~A~ECONDS
GET SECONDS
DH,AC SAVE
AL, CMOS REG 8 ADDRESS ALARM REG I STER
CMOS READ - READ CURRENT VAL.UE OF DSE BIT
AL. 0000000 I B MASK FOR VALID DSE BIT
DL,AL SET (DLI TO ZERO FOR NO DSE BIT
AL., CMOS MINUTES SET ADDRESS OF MINUTES
CMOS READ
GET MINUTES
CL,AC SAVE
AL., CMOS HOURS SET ADDRESS OF HOURS
CMOS READ GET HOURS
CH,AC
SAVE
SET CY.. 0
I RETURN WITH RESULT IN CARRY FLAG
SET RTC TIME
UPD IPR CHECK FOR UPDATE IN PROCESS
RTC-35
GO AROUND IF CLOCK OPERATING
RTC=STA ELSE TRY INITIALIZING CLOCK
AH,oH GET TIME BYTE - SECONDS
AL, CMOS SECONDS
ADDRESS SECONDS
CMOS WRTTE
UPDATE SECONDS
AH,CC GET TJME 8YTE - MINUTES
AL., CMOS MINUTES ADDRESS MINUTES
CMOS WRITE UPDATE. MINUTES
AH,CH GET TIlE BYTE - HOURS
AL., CMOS HOURS ADDRESS HOURS
CMOS WRITE UPDATE ADDRESS
AX, XTCMOS REG 8 ADDRESS AL.ARt.4 REG I STER
CMOS READ- - READ CURRENT VALUE
AL , oTIOOOI08 MASK FOR VALlO BIT POSITIONS
AL,OOOOOOIOB TURN ON 24 HOUR MODE
OL
I
0000000 I 8 USE ONL.Y THE DSE 81T
"L,DL
GET DAY LIGHT SAVINGS TIME BIT (DSE)
AH,AL
PLACE
I
N WORK REG I STER AND GET ADDRESS
CMOS_.RITE
SET NEW ALARM BITS
SET CY= 0
RETURN WITH CY=
a
GET RTC DATE
UPD IPR CHECK FOR UPDATE I N PROCESS
RTC=49
EXIT IF ERROR ICY= II
AL.,CMOS DAY MONTH ADDRESS DAY OF MONTH
CMOS READ - READ DAY OF MONTH
DL , " [ SAVE
AL
I
CMOS MONTH ADDRESS MONTH
CMOS READ READ MONTH
oH,A[ SAVE
AL.,CMOS YEAR ADDRESS YEAR
CMOS READ READ YEAR
CL.,A[ SAVE
ADDRESS CENTURY LOCAT I ON
GET CENTURY BYTE
CH,A[
SAVE
SET CYaO
~~o;M~~AgENTURY
RETURN I I TH RESULTS
I
N CARRY FLAG
SET RTC DATE
UPD I PR CHECK FOR UPDATE
IN
PROCESS
RTC-55
GO AROUND
I
F NO ERROR
RTC=STA
ELSE INITIALIZE CLOCK
AX
I
CMOS DAY WEEK ADDRESS OF DAY OF WEEK BYTE
CMOS WRITE -
LOAD ZEROS TO DA Y OF" WEEK
AH,D[ GET DAY OF MONTH BYTE
ADDRESS DAY OF" MONTH BYTE ~~O;M~~I~:Y
_MONTH
WRITE OF DAY OF MONTH REGISTER
AH,DH GET MONTH
AL.,CMOS MONTH ADDRESS MONTH BYTE
CMOS WRTTE
WR I TE t.40NTH REG I STER
AH,CC GET YEAR BYTE
ADDRESS YEAR REGI STER ~~O;M~~Ii~AR
WR I TE YEAR REG I S TER
AH,CH GET CENTURY BYTE
AL,CMOS CENTURY ADDRESS CENTURY BYTE
CMOS WRTTE WR I TE CENTURY LOCAT I ON
AX, XTCMOS REG 8 ADDRESS ALARM REG I STER
CMOS REAO- - READ CURRENT SETT I NGS
AL.OTFH CLEAR 'SET BIT'
AH,AL MOVE TO WORK REGISTER
CMOS_WRITE AND START CLOCK UPDATING
SET CY= 0
RETURN CY"O
SET RTC ALARM
AL,CMOS REG 8 ADDRESS ALARM
CMOS READ -
READ ALARM REGI STER
AL..20H
CHECK FOR ALARM ALREADY ENABLED
SET CARRY I N CASE OF ERROR
ERROR EX I T I F ALARM SET
BIOS2 5-177