GenRandom_: ; 13a8f (4:7a8f)
; generate a random 16-bit integer and store it at $FFD3,$FFD4
	ld a,[rDIV]
	ld b,a
	ld a,[H_RAND1]
	adc b
	ld [H_RAND1],a
	ld a,[rDIV]
	ld b,a
	ld a,[H_RAND2]
	sbc b
	ld [H_RAND2],a
	ret