LOC
OBJ
LINE
SOURCE
FA34 74FA
5712
JZ
,
LOOP
TILi..
HIGH
"2'
FA36
5713
W30:
FA36 E462
5714
IH
AL,PORT.C
I
NOW
WAIT
TILL
TINER'S
OUTPUT
IS
LOW
FA38 242:0
57lS
AND
AL.020H
FA3A 75FA
5716
JHZ
W30
5717
I
RELOAD
TIttER
WInt
PERIOD
5718
~
FOR
NEXT
DATA
BIT
'A3e
58
5719
pop
AX
~
RESTORE
PERIOD
COUNT
FA30
5720 1431:
;
SET
TIMER
fA3D
E64::!
5721
OUT
042H.
AL
~
SET
LOW
BYTE
OF
TIttER 2
FA3F 6AC4
5722
HOV
Al.
AH
FA41 E642
572:3
OUT
042H.
AL I SET HIGH
BYTE
OF
TIttER
2
FA43
C3
5724
RET
5725
WRITE.BIT
ENDP
5726
;
--
---------------------
_________
~ -
_____________
_
5727
UPDATE
CRC
REGISTER WITH
NEXT
DATA
BIT
5728
CRC
IS
USED
TO
DETECT
READ
ERRORS
5729
ASSUHES
DATA
BIT
IS
IN
CARRY
5730
5731
REG
AX
IS
MODIFIED
5732
FLAGS
ARE
HODIFIED
~------------------------------------------------
,.44
5733
5734
CRC_GEN
PROC
NEAR
FA44 A16900
5735
HOV
5736
I
THE
FOLLOWING
INST\JCTlONS
5737
;
WILL
SET
ntE
OVERFLOW
FlAG
5738
;
IF
CARRY
AtIJ
HS
BIT
OF
CRC
5739
I
ARE
~QUAL
FA47
0108
5740
RCR
AX'!
FA49
DIDO
5741
RCl
AX')
FA48
F8
5742
ClC
I
CLEAR
CARRY
FA4C
7104
5743
JNO
W3.
;
SKIP
IF
NO
OVERFLOW
5744
~
IF
DATA
BIT
XORED
WITH
5745
I
CRC
REG
BIT
15
IS
ONE
FA4E
351008
5746
XOR
AX,0810H
I
THEN
XOR
CRC
REG
WITH 0801H
FA51
F9
5747
STC
I
SET
CARRY
FA52
5748
1432:
FA52:
DIDO
5749
RCl
AX,)
I
ROTATE
CARRY
(DATA
BIll
5750
; INTO
CRC
REG
FA54
"36900
5751
MOV
CRC.REG,AX I
UPDATE
CRC.REG
FA57
C3
5752
RET
I FINISHED
5753
CRC.GEN
ENDP
5754
FA58
5755
BEGIN_OP
PROC
HEAR
~
START
TAPE
AHO
DE
LAY
FA58 E82:6FE
57
..
CAll
HOTOR.ON
;
TURN
ON
HOTOR
FASB
B342
5757
HOV
Bl,42H
;DELAY
FOR
TAPE
DRIVE
5758
;
TO
GET
UP
TO
SPEED
(l/2
SEC
I
FASO
5759
1433:
FASO
890007
5760
HOV
CX.700H
IIht-lER
looP=
APPROX.
10
ttILLISEC
FA60
ElFE
5761 1434:
lOOP
W34
FA62:
FEce
5762
DEC
Bl
FA64
75F7
5763
JNZ
W33
FA66
C3
5764
RET
5765
BEGIN..OP
EIIIP
5766
FA67 2:0323031
5767
EI
DB
•
201'
,13,10
FA68
00
FA6C
0
...
5768
5769
1-----------------------------------------------------------------------
5770
CHARACTER
GENERATOR
GRAPHICS
FOR
320X200
AND
640X200
GRAPHICS
5771
1-----------------------------------------------------------------------
FA6E
5772
ORS
OFA6EH
FA6E
5773
CRT_CHAR.GEN
LABEl
BYTE
FA6E
0000000000000000
5774
DB
OOOH,OOOH,OOOH,OOOH,OOOH,OOOH,OOOH,OOOH
I
0_00
FA76
7E8USS1BD99817E
5775
DB
07EH,081H,OA5H,081H,OBOH,099H,OSIH,07EH
I
0.01
FA
7E 7EFFDBFFC3E7FF7E
5776
DB
07EH,OFFH,ODBH,OFFH.OClH.OE7H,OFFH.07EH I
0.02
FA86 6CFEFEFE7C3810ao
5777
DB
06CH.OFEH,OFEH,OFEH,07CH,038H,OlOH.OOOH I
0.03
FASE
l0387CFE7C381000
5778
08
010H,038H,07CH,OFEH,07CH,038H.OIOH,OOOH
10.04
FA96
387C38FEFE7C387C
5779
08
038H.07CH,03SH,OFEH,OFEH,07CH,038H,07CH
;
0.05
FA9E
lOl0387CFE7C387C
5780
D.
010H.OIOH,038H,07CH,OFEH,07CH,038H,07CH
I
D.06
FAA6
0000183C3C180000
5781
08
OOOH,000H.018H,03CH,03CH.0ISH,OOOH,OOOH I
0.07
FAAE
FFFFE7C3C3E7FFFF
5782
DB
OFFH.OFFH,OE7H,OC3H.OC3H.OE7H,OFFH,OFFH j
0.08
FAS6
003C664242:663COO
5783
DB
000H,03CH,066H,042H,042H,066H,03CH.OOOH
;
0_09
FASE
FFC399BDBD99C3FF
5784
DB
OFFH,OC3H,099H,OBDH,OBDH.099H,OC3H,OFFH ;
0.0'"
FAC6 OF070F7DCCCCCC78
5785
DB
OOFH,007H,00FH,070H,OCCH,OCCH,OCCH,07SH I D.OB
FACE
3C0666663C187E18
5786
DB
03CH,066H,066H,066H,03CH,018H,07EH,OI8H.
I D.OC
5-108
System
BIOS
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