Amiga memory map

Standard amount of memory in the Amiga

• Amiga 1000 - 256KB chip RAM
• Amiga 500 - 512KB chip RAM
• Amiga 500+ - 1MB chip RAM
• Amiga 2000 - 512KB chip RAM, later 1MB chip RAM
• Amiga 3000 - 1-2MB chip RAM, 1MB fast RAM
• Amiga 600 - 1MB chip RAM
• Amiga 1200 - 2MB chip RAM
• Amiga 4000 - 2MB chip RAM, 2-4MB fast RAM

Memory map

Address Range	Size	Function
000000-03FFFF	256KB	256K bytes of chip RAM
040000-07FFFF	256KB	256K bytes of chip RAM (Amiga 1000 option card)
080000-0FFFFF	512KB	512K bytes of extended chip RAM (to 1 MB)
100000-1FFFFF	1024KB	1024K bytes of extended chip RAM (to 2 MB) (on models with ECS or AGA chipsets)
200000-9FFFFF	8MB	Primary 8 MB Auto-config space (Fast RAM)
A00000-BEFFFF	1984KB	Reserved
BFD000-BFDF00	3840 bytes	8520-B (access at even-byte addresses only)
BFE001-BFEF01	3840 bytes	8520-A (access at odd-byte addresses only)
C00000-D7FFFF	1536KB	Internal expansion memory (pseudo-fast, Slow RAM on Amiga 500)
D80000-DBFFFF	40KB	Reserved
DC0000-DCFFFF	64KB	Real time clock
DD0000-DFEFFF	188KB	Reserved
DFF000-DFFFFF	4KB	Custom chip registers
E00000-E7FFFF	512KB	Reserved
E80000-E8FFFF	64KB	Auto-config space. Boards appear here before the system relocates them to their final address.
E90000-EFFFFF	448KB	Secondary auto-config space (usually 64K I/O boards)
F00000-F7FFFF	512KB	Reserved / diagnostic ROM
F80000-FBFFFF	256KB	Reserved (1.x), lower half of System ROM (2.x, 3.x)
FC0000-FFFFFF	256KB	256K System ROM (1.x), upper half of System ROM (2.x, 3.x)

Some special addresses:
* 000000-000100 - MC680x0 Exception Vector Assignment table  (if VBR=0)
* 000004        - Exec base (pointer to exec.library jumptable) 

Sources for this info

• Amiga Hardware Reference Manual (1986)
• M68000 Programmer's Reference Manual (1984,fourth edition)
• amiga-hardware.com (for standard amount of memory)