68kMLA Classic Interface

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Classic II motherboard- Where is PRAM data stored?
Posted by: Rjp663 on 2020-12-31 03:17:06 I’ve recapped my early version motherboard and replaced the PRAM battery. However I’m still seeing the loss of time, date and mouse settings when the classic is turned off. I have checked the battery voltage back to chip U12 pin 7, then to pin 12 on the EGRET chip. That path is good. Question- what chip stores the PRAM data? thank you. Rick
Posted by: Rjp663 on 2020-12-31 09:49:01 And the answer is....U10 EGRET chip. Another custom Apple chip.
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