Address Base + 0
read as the first. Reading of this address causes writing of the
to the output register. Low significant bit (LSB) of the counter has
Base address of the interface is selected by 6-stage binary selector. Sections 1..6 set the address lines A7..A2. State ON = 0 and state OFF = 1.
Typical address of the
($84). Binary selector: 1: OFF, 2: ON, 3: ON, 4: ON, 5: ON, 6: OFF.