pokecrystal/engine/empty_sram.asm

EmptyAllSRAMBanks: ; 4cf1f
	ld a, $0
	call .EmptyBank
	ld a, $1
	call .EmptyBank
	ld a, $2
	call .EmptyBank
	ld a, $3
	call .EmptyBank
	ret

.EmptyBank: ; 4cf34
	call GetSRAMBank
	ld hl, SRAM_Begin
	ld bc, SRAM_End - SRAM_Begin
	xor a
	call ByteFill
	call CloseSRAM
	ret