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Author Topic: Sys 80 Non CPU boot/IRQ issue  (Read 3544 times)

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Offline MartyJ

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Re: Sys 80 Non CPU boot/IRQ issue
« Reply #90 on: May 31, 2009, 05:48:42 PM »
With mod removed:

U5 pin 15=low
Z26 pin 12=low
Z26 pin 13=high

IRQ still locked at high, no pulse.

OK, I understand re the hi/lo signals.  I thought this was something you were deciphering from the schematics... ^^^
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