Memory Map
Hex Address
Contents
00000 - 5FFFF
Unused by Basic; not preset in 128K or smaller systems
60000 - 67FFF
Hires graphics screen
68000 - 69FFF
Hires GET/PUT buffer
6A000 - 6BFFF
Secondary stack area
6C000 - 6DFFF
Hires text screen
6E000 - 6FFFF
Unused by Basic
70000 - 703FF
System RAM
70400 - 705FF
Lowres text screen
Non Disk System
70600 - 70BFF
lowres graphics; Page 1
70C00 - 711FF
Page 2
71200 - 717FF
Page 3
71800 - 71DFF
Page 4
71E00 - 723FF
Page 5
72400 - 729FF
Page 6
72A00 - 72FFF
Page 7
73000 - 735FF
Page 8
Disk System
70600 - 70DFF
Disk System RAM
70E00 - Page 1
Either System
From 1 - 8 pages of graphics can be reserved so the start of Basic
programs varies.
71200 - 77FFF
or
Basic programs, variables, and user ml programs
71400 - 77FFF
78000 - 79FFF
Extended Color Basic
7A000 - 7BFFF
Color Basic
7C000 - 7DFFF
Cartridge or Disk Controller
7E000 - 7FDFF
Super Extended Basic
7FE00 - 7FEFF
Secondary vector table
7FF00 - 7FF3F
PIAs
7FF90 - 7FBFF
GIME
7FFC0 - 7FFDF
video control, clock, and map type
7FFE0 - 7FFF1
not used
7FFF2 - 7FFFF
Primary vectors
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