ENAM1

ENAM1 = $1E

Enable/Disable Missile 1

		D7	D6	D5	D4	D3	D2	D1	D0
$1E	ENAM1							ENABLE

Enable Bits

The two missile graphics registers will draw a missile on any scan line by writing a 1 to the one bit enable missile registers (ENAM0, ENAM1). Writing a 0 to these registers will disable the graphics. The missiles’ left edge is positioned by a horizontal position register, but the right edge is a function of how wide the missile is (see NUSIZ0, NUSIZ1).

The ball graphics register works just like the missile registers. Writing a 1 to the enable ball register ENABL enables the ball graphics until the register is disabled. The ball can also be “stretched” (see CTRLPF), and vertically delayed one can line (see VDELBL).

Details

Bit	Value	Function
ENABLE D1	0	Disable display of Missile 1
	1	Enable display of Missile 1

Related

see TIA