••
••
LaC
OBJ
LINE
SOURCE
0004
0002:
0001
0018
11
0080
0040
OOZO
0010
0008
0019
??
OOlA
????
ODIC
????
ODIE
(16
???'?)
003E
0045
0046
0038
0010
003A
002A
0036
0052
0053
003E
??
0080
003f
??
0040
??
0025
0041
??
0080
0040
0020
0010
0009
0008
0004
0003
0002
0001
0042
(7
??
J
0049
??
004A
????
004C
????
004E
????
~
0050
(8
????I
0060
????
0062
??
0063
?1?1
0065
??
0066
??
0067
'????
0069
????
78
eTL_SHIFT
EOU
04H
; CONTROL
SHIFT
KEY DEPRESSED
79
lEfT_SHIFT
EOU
02H ;
lEFT
SHIFT
KEY
DEPRESSED
80
RIGHT_SHIFT
EOU
O1H
; RIGHT
SHIFT
KEY DEPRESSED
81
82
DB
; SECOND BYTE
OF
KEYBOARD STATUS
83
84
INS_SHIFT
EOU
80H
;
INSERT
KEY
IS
DEPRESSED
85
CAPS_SHIFT
EOU
40H
; CAPS
LOCK
KEY
IS
DEPRESSED
8.
HUH_SHIFT
EOU
20H
;
NUN
LOCK
KEY
IS
DEPRESSED
87
SCROLL_SHIFT
EOU
IOH
SCROLL LOCK KEY
IS
DEPRESSEO
88
HOLD_STATE
EOU
08H
SUSPEND KEY HAS BEEN TOGGLED
89
90
ALT_INPUT
DB STORAGE fOR ALTERNATE KEYPAD ENTRY
91
BUFFER_HEAD
OW
POINTER
TO
HEAD
Of
KEYBOARD BUFFER
.2
BUFFER_TAIL
OW
POINTER
TO
TAIL
OF
KEYBOARD BUFFER
93
KB_BUFFER
OW
16
Dupe?
I j
ROOM
FOR
15
ENTRIES
94
KB_BUFFER_EHO LABEL
WORD
.5
96
j------
HEAD
=
TAIL
INDICATES
THAT THE BUFFER
IS
EMPTY
.7
98
NUMJEY
EOU
SCAN
CODE
FOR
NUMBER
LOCK
SCROLL_KEY
EOU
70 SCROLL
LOCK
KEY
100
ALTJEY
EOU
5.
ALTERNATE
SHIFT
KEY
SCAN
COOE
101
CTL_KEY
EOU
2.
SCAN
CODE
FOR
CONTROL KEY
102
CAPS_KEY
EOU
58
SCAN
CODE
FOR
SHIFT
LOCK
103
LEFT_KEY
EOU
42
SCAN
CODE
FOR
LEFT
SHIFT
104
RIGHTJEY
EOU
54
SCAN
COOE
FOR
RIGHT
SHIFT
105
INS_KEY
EOU
82
SCAN
CODE
FOR
UlSERT
KEY
10.
DEL_KEY
EOU
83
SCAN
CODE
FOR
DELETE KEY
107
108
j
-----
-----
----------------------------------
109
j
DISKETTE
DATA AREAS
110
j
--------------------------------------------
111
DB
;
DRIVE
RECALIBRATION
STATUS
112
BIT
3-0
=
DRIVE
3-0
NEEDS RECAL BEFORE
113
NEXT SEEK
IF
BIT
IS
= 0
114
INTJLAG
EOU
oaOH
; INTERRUPT OCCURRt:NCE FLAG
115
MOTOR_STATUS
DB
;
MOTOR
STATUS
11.
BIT
3-0
=
DRIVE
3-0
IS
CURRENTLY R\..INI'IIHG
117
I
BIT
7 = CURRENT OPERATION
IS
A
WRITE.
REQUIRES
DEU.Y
118
ttOTOR_COUNT
DB
;
TIME
OUT
COUNTER
fOR
DRIVE
TURN OFF
"'
MOTOR_WAIT
EQU
37
;
TWO
SECONDS
OF
COUNTS
FOR
I1OTOR
TURN OFF
120
121
122
DISKETTE_STATUS
DB
j
SINGLE
BYTE
OF
RETURN
CooE
INFO
FOR
STATUS
123
TIME_OUT
EQU
80H
; ATTACHMENl
rAILED
TO
RESPOND
124
BAD_SEEK
EQU
40H
; SEEK OPERATION
FAILED
125
BAD_NEC
EQU
20H
; NEe CONTROLLER HAS
FAILED
12'
BAD_CRC
EQU
IOH
j
BAD
CRC
ON
DISKETTE
READ
127
DMA_BOUNDARY EqU 09H
; ATTEMPT
TO
DMA
ACROSS
64K
BOUNDARY
128
BAD_DMA
EQU
08H
;
DMA
OVERRUN
ON
OPERATION
12'
RECORD_NOTJND
EQU
04H
I REQUESTED SECTOR
NOT
FOUND
130
WRITE_PROTECT
EQU
OJH
I WRITE ATTEMPTED
ON
WRITE PROT
DISK
131
BAO
ADDR_HARK
EQU
02H
ADDRESS
MARK
HOT
FOUND
132
BAD_CHO
EQU
O1H
BAD
COMNAND
PASSED
TO
DISKETTE
I/O
133
134
DB
7
DUP(?)
; STATUS BYTES
FROM
NEC
135
136
j
------------
--------------------------------
137
;
VIDEO
DISPLAY
DATA AREA
138
;
--------------------------------------------
139
CRT_MODE
DB
; CURRENT CRT
HOOE
140
CRT_COLS
OW
;
HUMBER
OF
COLUMNS
ON
SCREEN
141
CRT_LEN
ow
j LENGTH
OF
REGEN
IN
BYTES
142
CRT_START
OW
STARTING
ADDRESS
IN
REGEN BUFFER
143
CURSOR_POSN
ow
8
DUP{?)
;
CURSOR
FOR
EACH
OF
UP
TO
a PAGES
144
CURSOR
MODE
OW
CURRENT
CURSOR
MODE
SETTING
145
ACTIVE_PAGE DB
CURRENT
PAGE
BEING
DISPLAYED
14.
ADDR_684S
OW
BASE ADDRESS
FOR
ACTIVE
DISPLAY
CARD
147
CRT_MODE SET DB
CURRENT
SETTING
Of
1liE
3X8
REGISTER
14B
CRT_PALLETTE DB
; CURRENT PALLETTE
SETTING
COLOR
CARD
14,
150
;
----
-------
---------------------------------
151
; CASSETTE DATA AREA
152
j--------------------------------------------
153
OW
;TIME
COUNT
AT DATA
EDGE
154
ow
JCRC
REGISTER
A-3
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