ld b, a
add a, a ; *2
add a, b ; *3
add a, a ; *6
Allows you to multiply the accumulator by 6 since the Gameboy had no multiply instruction.
Original Gameboy (DMG-01, 1989)
ld b, a
add a, a ; *2
add a, b ; *3
add a, a ; *6
0150-7FFF Cartridge ROM
8000-9FFF Video RAM
A000-BFFF Cartridge RAM (if available)
C000-DFFF Internal RAM
FE00-FE9F Sprite (OAM)
FF00-FF7F I/O Registers
sirpooplol 1607604675000 #1