Commodore PET User Manual page 318

Available for user if no
second cassette
Available for user if no
console tape 1/0
User program area
Basic
Working
Storage
Tape Read
Working
Storage
f- - - - - - -
1-------.-
BASIC
Stack
OS
Working
Storage
Tape Buffer
*1
Tape Buffer
*2
Text
-------
Variables
and Arrays
>
-------
-------
Strings
1024
826
512
634
256
(4K) 4095
(8K) 8191
(16K) 16383
(32K) 32767
Addresses 0-8191: 8K RAM (Storage and User Program)
The first block of
RAM
is allocated to working storage, the stack, tape
buffers, and storage of user programs. The amount of active
RAM
may be
4K
(addresses 0-4095), BK (addresses 0-8191), 16K (addresses 0-16384), or 32K
(addresses 0-32767). The first 1K allocation (to 1024) is fixed; the larger the
memory size. the more space is available in the user program area.
o
Locations 0 through 255 are used by the BASIC interpreter as working
storage locations. This area is detailed in Table 6-2.
305