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C000
 
16K RAM
 
 
8000
 
16K RAM
 
 
4000
 
16K RAM
 
 
0000
 
16K RAM
 
 
X= DON'T CARE
1= LOW
0= HIGH

LORAM= 0
HIRAM= 0
GAME = 1
EXROM= X
OR
LORAM= 0
HIRAM= 0
GAME = X
EXROM= 0

This map gives access to all 64K bytes of RAM. The I/O devices must be banked back into the processor's address space for any I/O operation.
 
 
E000
8K KERNAL ROM
 
D000 4K I/O
C000 4K RAM (BUFFER)
A000
8K BASIC ROM
 
8000
8K ROM CARTRIDGE
(BASIC EXP)
4000
 
16K RAM
 
 
0000
 
16K RAM
 
 
X= DON'T CARE
1= LOW
0= HIGH

LORAM= 1
HIRAM= 1
GAME = 1
EXROM= 0

This is the standard configuration for a BASIC system with a BASIC expansion ROM. This map provides 32K bytes contiguous of user RAM and up to 8K bytes of BASIC "enhancement."


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This page has been created by Sami Rautiainen.
Read the small print. Last updated November 07, 1998.