Commodore Plus 4 - Page 449

Appendix G
437
Memory Location(S)
Hexadecimal
Decimal
Usage
$07E6
$07E7
S07E8
$07E9
$07EA
S07EB
$07EC
S07ED
$O7EE-$O7F1
$07F2
S07F3
$07F4
S07F5
$07F6
S07F7
SO7F8
$07F9
$07FA
$07FB
S07FC
S07FD
$07FE-$07FF
$0800-$0BE7
$0BE8-$0BFF
$0C00-$0FE7
$0FE8-$0FFF
$1000-$3FFF
$1000-$17FF
$18OO-$1BE7
$1BE8-$1BFF
$1COO-$1FE7
$1FE8-$1FFF
$2000-$3F3F
2022
2023
2024
2025
2026
2027
2028
2029
2030-2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046-2047
2048-3047
3048-3071
3072-4071
4072-4095
4096-16383
4096-6143
6144-7143
7144-7167
7168-8167
8168-8191
8192-16191
Top screen line of current window
Left screen column of current window
Right screen column of current window
Flag to disable scrolling ($00=scroll,
$80=don't)
Auto insert flag ($00=off, $FF=on)
Latest character printed
Storage for screen line management
Color under cursor
Line link table for screen
.A to send to SYS
.X to send to SYS
.Y to send to SYS
Status register to send to SYS
Index for key scan
Flag for control S/T ($00=enabled, else
disabled)
Bank for monitor fetches ($00=ROM,
$80=RAM)
Bank for color key color/ luminance value
table ($00=RAM ($0113-S0122),
$80=ROM)
Bit map mask for split screen
Screen memory mask for split screen
Cassette motor lock signal
Time-of-day for PAL (not used)
Free
Color memory
Free
Screen memory
Free
RAM used by BASIC (in text mode)
Free (in BASIC graphics mode)
Luminance memory (in BASIC graphics
mode)
Free (in BASIC graphics mode)
Color memory (in BASIC graphics mode)
Free (in BASIC graphics mode)
Graphics screen (in BASIC graphics
mode)