Commodore Plus 4 - Page 441

Appendix G 489
Memory Location(S)
Hexadecimal Decimal Usage
$006F
111
$0070
$0071-50072
$0073-$0074
$0075
$0076-$0077
$0078
$0079-$007B
$007C-$007D
$007E-$007F
$0080
$0081
$0082
$0083
$0084
$0085
$0086
$0087
$0088
$0089
$008A
$008B
$008C-$008D
$008E
$008F
$0090
$0091
$0092
$0093
$0094
$0095
$0096
$0097
$0098
112
113-114
115-116
117
118-119
120
121-123
124-125
126-127
128
129
130
131
132
133
134
135
136
137
138
139
140-141
142
143
144
145
146
147
148
149
150
151
152
Sign comparison of FPA 1 and
FPA 2/pointer
Floating point accumulator 2, overflow
Cassette buffer/series pointer
Increment for AUTO ($00=none)
Flag for graphics area ($00=no, $FF=yes)
Key work area
Temporary storage for indirect load
Disk error message descriptor
BASIC stack pointer
Temporary storage for sounds
Temporary parameter storage
Flag for RUNning ($00=no, $80=yes)
Flag used for DOS commands
Graphic mode ($00=text, $20=high-res,
$60=split high-res, $A0=multicolor,
$E0=split multicolor)
Current color source for drawing
Current color/luminance for COLOR 2
Current color/luminance for COLOR 1
Maximum number of screen columns
Maximum number of screen rows
Flag for PAINT (left)
Flag for PAINT (right)
Flag for PAINT border ($00=same color,
$80=nonbackground color)
Pointer to bit map color information
Temporary storage
Temporary storage
I/O status word (ST)
STOP key flag
Temporary storage
Flag for load ($00) or verify ($01)
Flag for buffered serial output ($00=no,
$80=yes)
Buffered serial output byte
Save .X for BASIN
Count of open logical files
Current input device