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Author Topic: Sys 80 Non CPU boot/IRQ issue  (Read 3508 times)

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Marty Machine

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Re: Sys 80 Non CPU boot/IRQ issue
« Reply #75 on: May 30, 2009, 09:28:19 PM »
Quote from: MartyJ on May 30, 2009, 09:23:47 PM
Pin 34 on U5 held high.
Correct !

Quote
Pin 15 U5 held low
Pin 12 Z26 held high
Is the mod in between these 2 pins? they should both be low on the schematic...
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