Date: 2002-01-18 07:59:05

Hallo allemaal,

Anthony Beckett put these fotos on the net:

Not being familiar with the MultiMax hardware it seemed a nice way to learn
about it. I replied to a message with the following but never got a reply :(


>> It would be interesting to learn where in memory this chip is mapped to.
>> Could you maybe use a multimeter to figure out the connections between
>> the RAM's pins and the cartridge connector and write that down in a
>> table?
> For sure, I left my multimeter on all night the other day, so it's flat.
> I'll have to buy a 9volt. Get back to you tommorow.

Studying the photos the first thing I noticed was that pin 5 of the
expansionslot, the R/W line, is not connected. Very strange when there is a
SRAM onboard. Pin 21 of the SRAM is the R/W-input and is connected to the
DMA-input. The CS- and OE-pin of the SRAM are connected to I/O1. I/O2 goes
to jumper J5 and through the solderpad to EXROM I believe?

It doesn't make sense to me or somebody is pulling our legs :)


Any explanation is welcome.
   / __|__
  / /  |_/     Groetjes, Ruud
  \ \__|_\


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