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Author Topic: Sys 80 Non CPU boot/IRQ issue  (Read 3562 times)

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Offline The pinballist formally known as Dean Morgan

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Re: Sys 80 Non CPU boot/IRQ issue
« Reply #30 on: May 13, 2009, 09:09:46 PM »
If the tests are done correctly then it is a good chance that U2 or U3 is bad.  Also try it with the game prom removed. and test the IRQ then to ensure this is not dragging it down.
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