Schneiderware
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 #1 Introduction (Theory) (6/1986, pages 62-67)
- Schneiderware #2a Basisplatine (Motherboard) (7/1986, pages 60-67)
- Schneiderware #2b Centronics (Printer Port) (7/1986, pages 60-67)
- Schneiderware #3 V/24 (RS232 Interface) (8/1986, pages 70-77)
- Schneiderware #4 Netzteil (Power Supply) (9/1986, pages 78-83)
- Schneiderware #5 Echtzeituht (Real Time Clock) (10/1986, pages 78-85)
- Schneiderware #6 Uni-PIO (48 I/O lines) (12/1986, pages 124-130)
- Schneiderware #7 A/D and D/A Converter (3/1987, pages 32-45)
- Schneiderware #8 Pseudo ROM (SRAM and EPROM mapped as ROM) (4/1987, pages 26-34) (plus corrections in 5/1987, pages 32-34)
- Schneiderware #9 Eprommer (EPROM Burner) (6/1987, pages 122-131)
- Schneiderware Nachlese (Notes) (11/1987, pages 97-99)
- CPC Schneider International 06/1986, Page 062-067, Schneiderware #1 Introduction (Theory)
- CPC Schneider International 07/1986, Page 060-067, Schneiderware #2 Basisplatine (Motherboard) & Centronics (Printer Port)
- CPC Schneider International 08/1986, Page 070-077, Schneiderware #3 V/24 (RS232 Interface)
- CPC Schneider International 09/1986, Page 078-083, Schneiderware #4 Netzteil (Power Supply)
- CPC Schneider International 10/1986, Page 078-085, Schneiderware #5 Echtzeituhr (Real Time Clock)
- CPC Schneider International 12/1986, Page 124-130, Schneiderware #6 Uni-PIO (48 I/O lines)
- CPC Schneider International 01/1987, Page 144, Schneiderware Advert
- CPC Schneider International 02/1987, Page ??-??, 7 MIDI Interface (not part of the Schneiderware series)
- CPC Schneider International 03/1987, Page 032-045, Schneiderware #7 A/D and D/A converter
- CPC Schneider International 04/1987, Page 026-034, Schneiderware #8 Eprom/RAM (EPROM and battery-backed SRAM; both mapped as expansion ROM)
- CPC Schneider International 05/1987, Page 032-034, Schneiderware #8 Eprom/RAM (Notes/Corrections)
- CPC Schneider International 06/1987, Page 122-131, Schneiderware #9 Eprommer (EPROM Burner)
- CPC Schneider International 11/1987, Page 097-099, Schneiderware Nachlese (Notes)
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). The Real Time Clock is somewhat similar to the CPCI Real Time Clock released in a special issue of the same magazine, but not identical (the RTC chip has different pin-outs, and some of it's 4bit registers are working slightly different, the leap-year bits, for example).
Databoxes: UHR8000 RTC-RAM-driver in 10-1986 (hex listing, plus Hisoft Devpac source code) (caution this version uses incorrect I/O addresses FBE1-FBE3), UHRC000X RTC-ROM-driver in 4-1987 (this version uses correct I/O addresses FBE2-FBE4). Uni-PIO examples in 12-1986 (=only a few basic lines). There seem to be no Centronics and V/24 drivers included in databoxes.
Contents
I/O Ports
Address (default) | Address (alternate) | Usage |
DFxxh | N/A | Schneiderware RAM/EPROM - Expansion ROM bank number (W) Battery-backed SRAM and/or EPROM are selected when the bank-number matches the jumper-selected values; the memory is then mapped to C000h..FFFFh (in case of READing one must also enable upper ROM via Gate Array). The bank number decoding is a bit strange:
The SRAM/Write mode doesn't disable the internal RAM in the CPC, so writes are going both to SRAM and normal RAM at C000-FFFF, that no matter if upper ROM is enabled/disabled via Gate Array; the author recommended to map VRAM to 4000-7FFF via CRTC registers, in order to prevent video dirt during writing. |
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 |
F8E8h | F8F0h,F8F8h | Schneiderware Uni-PIO 8255 PPI #1 Port A (without pull-ups, with red LEDs) |
F8E9h | F8F1h,F8F9h | Schneiderware Uni-PIO 8255 PPI #1 Port B (with pull-ups and green LEDs) |
F8EAh | F8F2h,F8FAh | Schneiderware Uni-PIO 8255 PPI #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 #1 Control |
F8ECh | F8F4h,F8FCh | Schneiderware Uni-PIO 8255 PPI #2 Port A (without pull-ups or LEDs) |
F8EDh | F8F5h,F8FDh | Schneiderware Uni-PIO 8255 PPI #2 Port B (without pull-ups or LEDs) |
F8EEh | F8F6h,F8FEh | Schneiderware Uni-PIO 8255 PPI #2 Port C (without pull-ups or LEDs) |
F8EFh | F8F7h,F8FFh | Schneiderware Uni-PIO 8255 PPI #2 Control |
F9E0h | F9E2h | Schneiderware V/24 8251 USART Data |
F9E1h | F9E3h | Schneiderware V/24 8251 USART Control |
F9ECh | F9E8h | Schneiderware V/24 8253 Timer 0 (TX clock) |
F9EDh | F9E9h | Schneiderware V/24 8253 Timer 1 (RX clock) |
F9EEh | F9EAh | Schneiderware V/24 8253 Timer 2 (unused) |
F9EFh | F9EBh | Schneiderware V/24 8253 Timer Control Note: Timer clock input is jumper select-able: 2MHz (default), or 1MHz |
FAE0h | N/A | Schneiderware Analog Board ADC 0848 A/D Converter (R/W) Read: Get 8bit data from selected channel Write: Select channel & mode; bit0..2=channel (0..7), bit3..4=mode, bit5-7=unused
|
FAE1h | N/A | Schneiderware Analog Board DAC 0832 D/A Converter #1 (W) Write: 8bit data |
FAE2h | N/A | Schneiderware Analog Board DAC 0832 D/A Converter #2 (W) Write: 8bit data |
FAF0h | N/A | Schneiderware Eprom Burner 8255 PPI #1 Port A (Data, 8bit) |
FAF1h | N/A | Schneiderware Eprom Burner 8255 PPI #1 Port B (Address LSBs, 8bit) |
FAF2h | N/A | Schneiderware Eprom Burner 8255 PPI #1 Port C (Address MSBs, 7bit; bit7=unused) |
FAF3h | N/A | Schneiderware Eprom Burner 8255 PPI #1 Control |
FAF4h | N/A | Schneiderware Eprom Burner 8255 PPI #2 Port A (bit0-7=unused) |
FAF5h | N/A | Schneiderware Eprom Burner 8255 PPI #2 Port B (bit0-5=unused, bit6=Red LED, bit7=Green LED) |
FAF6h | N/A | Schneiderware Eprom Burner 8255 PPI #2 Port C (programming signals, 8bit) |
FAF7h | N/A | Schneiderware Eprom Burner 8255 PPI #2 Control |
FBE2h | BUGGED:FBE1h | Schneiderware RTC index/control (W) |
FBE3h | BUGGED:FBE2h | Schneiderware RTC data 4bit (W) |
FBE4h | BUGGED:FBE3h | Schneiderware RTC data 4bit (R) |
Schematics
Pictures
Datasheets
- M5832 Datasheet - Real time clock