Table of Contents
Advertisement
Appendix A.
BLOCK 8
·0
1
2
3
4
5
6
7
8
9
10
11
12
13
·14
15
TYPE
RAM
RAM
RAM
ROM
ROM
ROM
1/0
ROM
Detailed PET Memory Map
PET Memory Allocation By 4K Blocks
START
ADDRESS
FUNCTION
SOOOO
Working, text, variable storage.
$1000
Test variable storage (BK only)
$2000
Expansion RAM
$3000
Expansion RAM
$4000
Expansion RAM
$5000
Expansion RAM
$6000
Expansion RAM
$7000
Expansion RAM
saooo
Screen
memory
(1 K)
$9000
Expansion ROM
SAOCO
Expansion
ROM
$8000
Expansion ROM
SCOOO
BASIC (principally statement interpreter).
$0000
BASIC (principally math package).
SEOOO
Screen editor.
SE800
All internal PET I/O.
$FOOO
as
diagnostics
·see expanded description
Block 0 By 256 Byte Pages
START
PAGE
TYPE
ADDRESS
FUNCTION
··0
RAM
0000
BASIC OS working storage
··1
RAM
0100
Stack
··2
RAM
0200
o
S working storage
""3
RAM
0300
Cassette buffers.
4·15
RAM
0400
BASIC text area
• * see expanded description by page
Block 14 By 2K Segment
PAGE
o
1
TYPE
ROM
1/0
START
ADDRESS
$EOOO
$E800
FUNCTION
Screen editor
PET
110
A·1
Advertisement
Table of Contents
