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Message

Ensoniq Mirage help

2006-05-29 by djbrow54

I just picked up an Ensoniq Mirage for parts and would like to see if 
I can coax some life out of it.  Everything appears dead.  Power 
supplies are good.  I'm trying to see if the processor appears 
functional.  I found one bent over pin and thought perhaps that was it 
but it is still dead.

I'm having trouble finding a datasheet for a 68B09 processor.  Does 
anyone know where one is posted?

The G- (pin 20) of the 2732 seems to follow the system clock (1MHz) 
which is screwy.  Anyone have a ecopy of the logic portion of this 
part of the schematic?  I'm starting to think the processor may be 
bad.  I don't want to invest in a full set of schematics since this 
whole unit may be junk.  I'd like to at least see if the processor is 
trying to read data from the eprom.

Dave

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