Check here for the datasheet
http://gamearchive.com/General/Data_Sheets/6809.pdfThe 6809 and 68B09 are compatible and both are
described in this document.
Eric
--- djbrow54 <
davebr@...> wrote:
> 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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