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PDP11 Hack Plus board, part 2
So my PCBs arrived (I opted for black, just because) and I built one up run tests. Now the 6402 and the DCJ11 are in sockets as they’re hard to find. The two buttons are Reset and Halt, as I couldn’t fit all the LEDs and their driver chips on the board I opted for breakout pins for things I thought I might need to monitor. First problem was a 6402 that was faulty and as a result killed the 1.8432MHz module, somewhat annoying, but in this day and age of chip shortages and fakes sadly not unexpected, so swapping out another 6402 and a new clock module and the…
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PDP11 Hack Plus Board
Well I finally finished the PCB, but I decided to remove the LEDs, all 81 of them. For two reasons, firstly it was turning into a night mare to route, secondly I’m not even sure if this will work. If it does then I will do another board with some extras on, including LEDs. I’ve also made a PDF of the schematic for those interested, when everything is confirmed and working I’ll be sharing the KiCAD files for anyone daft enough to make one 🙂 In the interim here is the PDF of the schematic. Anyway, PCBs have been ordered and should be with me in a week or so,…