Great Hierophant
Veteran Member
Even assuming the large, 1985 Central Point Software CopyIIPC (regular) Option Board would fit inside a Tandy 1000/A/HD/SX computer, it does not have a jumper to select DMA1, which is required for the Option Board to work in a Tandy 1000 machine. You need the small TTL 1986 Option Board, the VLSI 1987 Option Board, the Enhanced Option Board or the Deluxe Option Board.
When the manual talks about needing an extra, Tandy cable, it really means it just needs a longer, untwisted cable. Tandy provided cables are usually the absolutely shortest cables they can possibly be to connect the drives to the motherboard. Using the board in a Tandy (TX/TL/RL/SL etc.) with power-in-drive cables requires you to modify cables so the power lines go directly from the motherboard connector to the drives' connector.
In these systems, you might as well construct two of your own cables using 34-pin wire and some connectors bought at the local electronics store. The first cable, which connects from the motherboard to the Option Board, should have a card-edge connector (to the Option Board) on one end and a pin connector (to the motherboard) on the other. With an xacto knife, you need to separarte pins 1, 3, 5, 7, 9, 11, 29, 31 and 33 and connect them directly to the second cable which connects the option board to the floppy drives. Eliminate those wires on the second cable up and until the point where the first header for a floppy drive that accepts power through the data is located. Then connect the loose wires from the first cable.
When the manual talks about needing an extra, Tandy cable, it really means it just needs a longer, untwisted cable. Tandy provided cables are usually the absolutely shortest cables they can possibly be to connect the drives to the motherboard. Using the board in a Tandy (TX/TL/RL/SL etc.) with power-in-drive cables requires you to modify cables so the power lines go directly from the motherboard connector to the drives' connector.
In these systems, you might as well construct two of your own cables using 34-pin wire and some connectors bought at the local electronics store. The first cable, which connects from the motherboard to the Option Board, should have a card-edge connector (to the Option Board) on one end and a pin connector (to the motherboard) on the other. With an xacto knife, you need to separarte pins 1, 3, 5, 7, 9, 11, 29, 31 and 33 and connect them directly to the second cable which connects the option board to the floppy drives. Eliminate those wires on the second cable up and until the point where the first header for a floppy drive that accepts power through the data is located. Then connect the loose wires from the first cable.