[Coladam] ROM question for ADAM
oltmansg at bellsouth.net
Thu Aug 28 03:11:03 CEST 2008
They are identical, with just a couple notable exceptions... On
expansion module 3, the printer/power connector is soldered directly
onto the PCB, instead of having the pigtail extender to reach the edge
of the case on the standalone. Also, the Colecovision system
interconnect has a small board with the bus buffers on it (these are
on the gamma board of a standalone system). Other than that, they are
Do you have this additional firmware by chance? Maybe we need a
repository for this stuff...
On Aug 27, 2008, at 2:58 PM, Rich Drushel wrote:
> On Wed, August 27, 2008 3:07 pm, Troy Forsythe wrote:
>> I too have come across a system with all four sockets populated.
>> In my case
>> it was actually a Coleco Adam Expansion Unit #3, not a full blown
>> When I dumped the chips it seemed that the EPROMS labeled ALF1,
>> ALF2, ALF3
>> contained Smartwriter code in 8K chunks.
> The addressing of the SW ROMs in the Exp.Mod.3 is probably the same
> as for the center-slot 4-ROM French or German SW cards (in European
> the traces are not connected on North American ADAMs so the cards
> won't work),
> 4 8K ROMs. Though one of the ALF chips would have to be 16K, right,
> to hold
> the 8K EOS ROM? I have never opened up an Exp.Mod.3 so I don't know
> what it
> looks like in there...
> Richard F. Drushel, Ph.D. | "They fell: for Heaven to
> them no hope
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