Difference between revisions of "Schneiderware Uni-PIO"
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Revision as of 11:05, 30 September 2010
The Schneiderware Uni-PIO is a general purpose I/O port with 48 input/output signals, published by german magazine CPC Schneider International as part of their Schneiderware DIY series. The plain PCB, or the fully assembled board were also available via mail-order.
The ECB Bus connector of the board is intended to be plugged into the Schneiderware Basisplatine, but it could be also wired directly to the CPCs Expansion Port.
I/O Ports
Default I/O Addresses are F8E8h-F8EFh, optionally a second or third Uni-PIO card can be jumpered to F8F0h-F8F7h and F8F8h-F8F8h, giving a total of 144 I/O lines when using three cards.
| Address (default) | Address (alternate) | Usage |
| F8E8h | F8F0h,F8F8h | Schneiderware Uni-PIO 8255 PPI chip #1 Port A (without pull-ups, with red LEDs) |
| F8E9h | F8F1h,F8F9h | Schneiderware Uni-PIO 8255 PPI chip #1 Port B (with pull-ups and green LEDs) |
| F8EAh | F8F2h,F8FAh | Schneiderware Uni-PIO 8255 PPI chip #1 Port C (lower 4bit without pull-ups and red LEDs, upper 4bit with pull-ups and green LEDs) |
| F8EBh | F8F3h,F8FBh | Schneiderware Uni-PIO 8255 PPI chip #1 Control |
| F8ECh | F8F4h,F8FCh | Schneiderware Uni-PIO 8255 PPI chip #2 Port A (without pull-ups or LEDs) |
| F8EDh | F8F5h,F8FDh | Schneiderware Uni-PIO 8255 PPI chip #2 Port B (without pull-ups or LEDs) |
| F8EEh | F8F6h,F8FEh | Schneiderware Uni-PIO 8255 PPI chip #2 Port C (without pull-ups or LEDs) |
| F8EFh | F8F7h,F8FFh | Schneiderware Uni-PIO 8255 PPI chip #2 Control |
Cautions - Port F8F0h-F8F3h were also used as alternate address of the Schneiderware Centronics Port, recommended work-around is to modify the Centronics card. On the PCBs, two PPI #1 Port C signals are accidently exchanged with each other (wired to the wrong pins on the 50-pin connector, and to the wrong LEDs).
Pictures
Uni-PIO Schematic
Uni-PIO (component side)
Uni-PIO (solder side)
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