EmptyAllSRAMBanks:
ld a, 0
call .EmptyBank
ld a, 1
ld a, 2
ld a, 3
ret
.EmptyBank:
call GetSRAMBank
ld hl, SRAM_Begin
ld bc, SRAM_End - SRAM_Begin
xor a
call ByteFill
call CloseSRAM