8-bit acorn emulators • Re: Watford DDFS and Reset. Do we have a circuit diagram for the DDB2 board? Is reset really connected?

I have tried searching for a circuit diagram and drawn a blank and I don't have a real one to check with a meter.

I have got a Watford DDB2 board to hand from my spares box.

8271 pin 4 (reset) is connected to pin 5 of a 74LS04 inverter. Pin 6 of this inverter is connected to 1770 pin 13 (master reset).

Checked these both visually and with a multimeter.

Statistics: Posted by chrissawer — Wed May 29, 2024 10:33 pm

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