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
return to higher level