Schneiderware Analog Converter

The Schneiderware Analog Converter is a A/D and D/A Converter with 8 analog inputs, 2 analog outputs, 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. The D/A converter additionally requires a Schneiderware Power Supply (or another external power supply with +12V) (eventually one could also use the CPC's disc drive power supply; though not tested if the supplies in the CTM644/GT65 monitors provide enough amps).

I/O Ports

Address (default)	Address (alternate)	Usage
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 Mode 0 (or 1) - Differential: Plus=Channel(N), Minus=Channel(N XOR 1) Mode 2 - Single-Ended: Plus=Channel(N) and Minus=AGND Mode 3 - Pseudo-Differential: Plus=Channel(N) and Minus=Channel(7)
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

Pictures

• 

  DAC/ADC Schematic

Scanned Article

• Schneiderware 7 - Analog Converter.pdf - 8 analog inputs, 2 analog outputs - 3/1987 page 32-45, final notes from 11/1987 page 99

Datasheets

• ADC0848 Datasheet.pdf - 8 channel A/D converter
• DAC0832 Datasheet.pdf - 1 channel D/A converter