Difference between revisions of "Schneiderware Centronics Port"
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|Address (default) || Address (alternate) || Usage | |Address (default) || Address (alternate) || Usage | ||
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| − | |F8E0h || F8F0h (later redefined to F8E4h) || Schneiderware Centronics 8255 PPI Port A (data) | + | |F8E0h || F8F0h (later redefined to F8E4h) || Schneiderware Centronics [[8255 PPI chip|8255 PPI]] Port A (data) |
|- | |- | ||
| − | |F8E1h || F8F1h (later redefined to F8E5h) || Schneiderware Centronics 8255 PPI Port B (unused) | + | |F8E1h || F8F1h (later redefined to F8E5h) || Schneiderware Centronics [[8255 PPI chip|8255 PPI]] Port B (unused) |
|- | |- | ||
| − | |F8E2h || F8F2h (later redefined to F8E6h) || Schneiderware Centronics 8255 PPI Port C (busy/strobe)<br>(bit7=busy, bit6-1=unused, bit0=strobe; strobe is externally inverted)<br>(autolf is wired to GND, all other control/status signals are not connected) | + | |F8E2h || F8F2h (later redefined to F8E6h) || Schneiderware Centronics [[8255 PPI chip|8255 PPI]] Port C (busy/strobe)<br>(bit7=busy, bit6-1=unused, bit0=strobe; strobe is externally inverted)<br>(autolf is wired to GND, all other control/status signals are not connected) |
|- | |- | ||
| − | |F8E3h || F8F3h (later redefined to F8E7h) || Schneiderware Centronics 8255 PPI Control | + | |F8E3h || F8F3h (later redefined to F8E7h) || Schneiderware Centronics [[8255 PPI chip|8255 PPI]] Control |
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|} | |} | ||
Revision as of 08:28, 30 September 2010
The Schneiderware series consists of several DIY projects which have been released in german magazine CPC Schneider International published by DMV. The name "Schneiderware" was probably choosen due to its double meaning ("CPC Hardware" in computer language, or "specially fitted clothing" in german language). Aside from building the hardware on one's own, one could also order printed circuit boards, either fully assembled, or plain PCBs without components.
The various boards are having special connectors, intended to be mounted on the "Basisplatine" (some kind of a motherboard with ECB Bus sockets) which allows to connect up to five Schneiderware boards to the CPCs Expansion Port; with some small modifications one could also connect the boards directly to the Expansion Port (the motherboard is merely an Y-cable-like adaptor without electrical components, so one doesn't really need it).
- Schneiderware #2a Basisplatine (Motherboard) (7/1986 pages 60-67)
- Schneiderware #2b Centronics (Printer Port) (7/1986 pages 60-67, plus complaints from 10/1986 page 10, port B redefined on 12/1986 page 124 and 3/1987 pages 8-9)
- Schneiderware #6 Uni-PIO (48 I/O lines) (12/1986 pages 124-130, correction on 5/1987 page 12)
Notes: The "Centronics" board is yet another 8bit Printer Port solution (but different than the joystick-signal based one that was released a few months earlier in the same magazine).
I/O Ports
| Address (default) | Address (alternate) | Usage |
| F8E0h | F8F0h (later redefined to F8E4h) | Schneiderware Centronics 8255 PPI Port A (data) |
| F8E1h | F8F1h (later redefined to F8E5h) | Schneiderware Centronics 8255 PPI Port B (unused) |
| F8E2h | F8F2h (later redefined to F8E6h) | Schneiderware Centronics 8255 PPI Port C (busy/strobe) (bit7=busy, bit6-1=unused, bit0=strobe; strobe is externally inverted) (autolf is wired to GND, all other control/status signals are not connected) |
| F8E3h | F8F3h (later redefined to F8E7h) | Schneiderware Centronics 8255 PPI Control |
Pictures
Centronics Schematic
Centronics (component side)
Centronics (solder side)
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