Memory Map - Nintendo GAME BOY Programming Manual

Game Boy Programming Manual

1.3 Memory Map

! When Used to Control up to 4 Mbits of ROM
RAM Address
7FFFh
Bank 3
6000h
Bank 2
4000h
Bank 1
2000h
Bank 0
0000h
! When Used to Control up to 8 Mbits of ROM
CPU Address
DFFFh
Internal
Working
RAM
C000h
External
Expansion
Working
A000h RAM
Display
RAM
8000h
Program
Switching
Area
4000h
Program
Residence
Area
0000
CPU Address
DFFFH
Internal
Working
RAM
C000H
External
Expansion
Working
A000H RAM
Display
RAM
8000H
Program
Switching
Area
4000H
Program
Residence
Area
0000
ROM Address
1FFFFFh
Bank 7Fh
Bank 7Eh
: :
Bank 61h
183FFFh
Bank 60h
180000h
: :
Bank 41h
103FFFh
Bank 40h
100000h
: :
Bank 21h
083FFFh
Bank 20h
080000h
: :
Bank 2
008000h
Bank 1
004000h
Bank 0
000000
218
ROM Address
7FFFFH
Bank 1Fh
Bank 1Eh
: :
: :
: :
Bank 6
18000h
Bank 5
14000h
Bank 4
10000h
Bank 3
0C000h
Bank 2
08000h
Bank 1
04000h
Bank 0
00000h
Unusable
(If accessed, the Bank 0x61 image appears)
Unusable
(If accessed, the Bank 0x41 image appears)
Unusable
(If accessed, the Bank 0x21 image appears)