16-04-2022, 01:21 PM
Thanks Ernest,
You got me looking in the right direction. It was the connector X2! A silly mistake on my behalf. The board had a bodge wire to connect the X2 connector to ground with a more sizeable wire, but the wire was way too long so I'd trimmed it and reattached. Of course I'd managed to short the pin 1 on the 40 way at the same time.
Now I have some life! I get... a cursor :-)
No beep. No other life, but to get a cursor, it must be doing a certain amount of setup, right?
(To me, this suggests I'm using the wrong ROM? What ROM should I be using with a MB8342-3 in FDD mode?)
Also, no, I didn't test before I started the upgrade. With hindsight I probably should have.
Chesh
You got me looking in the right direction. It was the connector X2! A silly mistake on my behalf. The board had a bodge wire to connect the X2 connector to ground with a more sizeable wire, but the wire was way too long so I'd trimmed it and reattached. Of course I'd managed to short the pin 1 on the 40 way at the same time.
Now I have some life! I get... a cursor :-)
No beep. No other life, but to get a cursor, it must be doing a certain amount of setup, right?
(To me, this suggests I'm using the wrong ROM? What ROM should I be using with a MB8342-3 in FDD mode?)
Also, no, I didn't test before I started the upgrade. With hindsight I probably should have.
Chesh
John "CheshireNoir" Parker
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One Dark Little Kitten
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One Dark Little Kitten