Nintendo DMG-01 - Game Boy Console Manual page 70

3.3.1. 8-Bit Loads
5. LD A,(C)
Description:
Put value at address $FF00 + register C into A.
Same as: LD A,($FF00+C)
Opcodes:
Instruction
LD
6. LD (C),A
Description:
Put A into address $FF00 + register C.
Opcodes:
Instruction
LD
Page 70
Parameters
A,(C)
Parameters
($FF00+C),A
Game Boy
Opcode Cycles
F2 8
Opcode Cycles
E2 8
TM
CPU Manual
V 1.01