INC

This is an article about the GB-Z80 CPU.

Opcodes:

Arithmetic and logical: ADD - ADD (16-bit) including LD HL,SP+nn - ADC - AND - CP - CPL - DAA - DEC - DEC and INC (16-bit) - INC - SBC - SUB - OR - XOR
Conditional: CALL - JP - JR - RET
Load: LD (8-bit) - LD (16-bit)
Extended Set: BIT - RES - RL - RLC - RR - RRC - SET - SLA - SRA - SRL - SWAP

The byte specified by the operand is incremented.

Instructions

INC B    - $04 - 1 Machine Cycle
INC C    - $0C - 1 Machine Cycle
INC D    - $14 - 1 Machine Cycle
INC E    - $1C - 1 Machine Cycle
INC H    - $24 - 1 Machine Cycle
INC L    - $2C - 1 Machine Cycle
INC (HL) - $34 - 2 Machine Cycles
INC A    - $3C - 1 Machine Cycle

Flags

Z: 1 if result is zero; 0 otherwise
N: 0
H: 1 if carry from bit 3; 0 otherwise
C: not affected