Nintendo DMG-01 - Game Boy Console Manual page 92

3.3.4. 16-Bit Arithmetic
3. INC nn
Description:
Increment register nn.
Use with:
nn = BC,DE,HL,SP
Flags affected:
None.
Opcodes:
Instruction
INC
INC
INC
INC
Page 92
Parameters
BC
DE
HL
SP
Game Boy
Opcode Cycles
03 8
13 8
23 8
33 8
TM
CPU Manual
V 1.01