Fatman-Problem: MicroController not working

Heiko Bajus uhb17 at rzserv2.fh-lueneburg.de
Mon Dec 8 16:04:23 CET 1997

At 01:23 08.12.97 GMT, you wrote:

>On Mon, 08 Dec 1997 00:41:45 +0100, Heiko Bajus
><uhb17 at rzserv2.fh-lueneburg.de> wrote:
>If the MPU chip worked in the midi2cv8, then it's ok.  I would suspect
>the Eprom.  Since mine worked from day 1, I never scoped out the MPU.
>I couldn't have anyway since my scope is audio only (460khz
>bandwidth), but I'd guess if that part of the circuit is the same,
>then the code probably toggles these ouputs.
>Does the MIDI light illuminate when you hit a key on the MIDI
>keyboard?  Does the Gate LED go on?
The MIDI LED lights when MIDI Messages arrive, but the Gate LED remains dark.

>Did you just get the PC board from PAiA and populate it with parts
>purchased locally?
That´s what I did! A Friend burned the Firmware from Paia´s Website into
the Eprom. Unfortunately he´s too busy to help me. Could it be that the the
Firmwarefile contained any errors?

Thanks so far!

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