Nintendo DMG-01 Manual - Page 94
Miscellaneous
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3.3.5. Miscellaneous Game BoyTM CPU Manual 3.3.5. Miscellaneous 1. SWAP n Description: Swap upper & lower nibles of n. Use with: n = A,B,C,D,E,H,L,(HL) Flags affected: Z - Set if result is zero. N - Reset. H - Reset. C - Reset. Opcodes: Instruction SWAP SWAP SWAP SWAP SWAP SWAP SWAP SWAP Parameters A B C D E H L (HL) Opcode CB 37 CB 30 CB 31 CB 32 CB 33 CB 34 CB 35 CB 36 Cycles 8 8 8 8 8 8 8 16 Page 94 V 1.01
3.3.5. Miscellaneous
Game Boy
TM
CPU Manual
3.3.5.
Miscellaneous
1.
SWAP n
Description:
Swap upper & lower nibles of n.
Use with:
n = A,B,C,D,E,H,L,(HL)
Flags affected:
Z - Set if result is zero.
N - Reset.
H - Reset.
C - Reset.
Opcodes:
Instruction
Parameters
Opcode
Cycles
SWAP
A
CB 37
8
SWAP
B
CB 30
8
SWAP
C
CB 31
8
SWAP
D
CB 32
8
SWAP
E
CB 33
8
SWAP
H
CB 34
8
SWAP
L
CB 35
8
SWAP
(HL)
CB 36
16
Page 94
V 1.01