ld a,%10111110
	out (1),a		; activate key groups 0 and 6
	in a,(1)		; poll keyboard driver
	ld hl,keyReturn
	bit 3,a			; is Up arrow pressed
	jr nz,{1@}
	res movForward,(hl)
@:	bit 2,a			; is Right arrow pressed
	jr nz,{1@}
	res turnRight,(hl)
@:	bit 1,a			; is Left arrow pressed
	jr nz,{1@}
	res turnLeft,(hl)
@:	bit 0,a			; is Down arrow pressed
	jr nz,{1@}
	res movBack,(hl)
@:	bit 5,a			; is [2nd] pressed
	jr nz,{1@}
	res itemCollect,(hl)
@:	bit 6,a			; is [Mode] pressed
	jr nz,{1@}
	res toggleFlashLt,(hl)
@:	bit 7,a			; is [Del] pressed
	jr nz,{1@}			; quit game
	res quit,(hl)
; check secondary keys
@:	ld a,%11011111
	out (1),a
	in a,(1)
	bit 7,a			; is [Alpha] pressed
	jr nz,{1@}
	res sprintActive,(hl)
@:	ret