Amiga System Memory Map

000000

256K bytes of chip RAM

03FFFF

040000

256K bytes of chip RAM
(Amiga 1000 option card)

07FFFF

080000

512K bytes of extended chip RAM (to 1 MB)

0FFFFF

100000

1024K bytes of extended chip RAM (to 2 MB)
(on models with ECS or AGA chipsets)

1FFFFF

200000

Primary 8 MB Auto-config space (Fast RAM)

9FFFFF

A00000

Reserved

BEFFFF

BFD000

8520-B (access at even-byte addresses only)

BFDF00

BFE001

8520-A (access at odd-byte addresses only)

BFEF01

C00000

Internal expansion memory (pseudo-fast,
Slow RAM on Amiga 500)

D7FFFF

D80000

Reserved

DBFFFF

DC0000

Real time clock

DCFFFF

DD0000

Reserved

DFEFFF

DFF000

Custom chip registers

DFFFFF

E00000

Reserved

E7FFFF

E80000

Auto-config space. Boards appear here before
the system relocates them to their final address.

E8FFFF

E90000

Secondary auto-config space
(usually 64K I/O boards)

EFFFFF

F00000

256K System ROM (Kickstart 2.0)

FBFFFF

FC0000

256K System ROM

FFFFFF

Source: Amiga Hardware Reference Manual

[Back]