Nintendo DMG-01 Manual - Page 110
RES b,r
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3.3.7. Bit Opcodes Game BoyTM CPU Manual 3. RES b,r Description: Reset bit b in register r. Use with: b = 0 - 7, r = A,B,C,D,E,H,L,(HL) Flags affected: None. Opcodes: Instruction RES RES RES RES RES RES RES RES Parameters b,A b,B b,C b,D b,E b,H b,L b,(HL) Opcode CB 87 CB 80 CB 81 CB 82 CB 83 CB 84 CB 85 CB 86 Cycles 8 8 8 8 8 8 8 16 Page 110 V 1.01
3.3.7. Bit Opcodes
Game Boy
TM
CPU Manual
3.
RES b,r
Description:
Reset bit b in register r.
Use with:
b = 0 - 7, r = A,B,C,D,E,H,L,(HL)
Flags affected:
None.
Opcodes:
Instruction
Parameters
Opcode
Cycles
RES
b,A
CB 87
8
RES
b,B
CB 80
8
RES
b,C
CB 81
8
RES
b,D
CB 82
8
RES
b,E
CB 83
8
RES
b,H
CB 84
8
RES
b,L
CB 85
8
RES
b,(HL)
CB 86
16
Page 110
V 1.01