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Grand Ram expansion card - Printable Version

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Grand Ram expansion card - sjt99 - 09-23-2014

Anyone out there has this card.
Looking for photos of both sides as well as a schematic.
Also, any other info on the card you might have...pdf of the original manual
Also any info on accessories for it that might have been produced?
There are 2 options connectors on the board.


RE: Grand Ram expansion card - ksarul - 09-23-2014

I've been thinking on this one for a couple of days now--I think I may have had a manual for this card at one time, so I'll see if I can dig it up. On the schematic, you are pretty much doomed unless you make one of your own. I don't think DataBioTics ever released one. I know that Bryan Roppolo bought the last things they had available a few years back, and I don't think there was a schematic in the haul he got (although he did get a prototype of the Superspace III module out of it).


RE: Grand Ram expansion card - sjt99 - 09-23-2014

(09-23-2014, 10:24 PM)ksarul Wrote: I've been thinking on this one for a couple of days now--I think I may have had a manual for this card at one time, so I'll see if I can dig it up. On the schematic, you are pretty much doomed unless you make one of your own. I don't think DataBioTics ever released one. I know that Bryan Roppolo bought the last things they had available a few years back, and I don't think there was a schematic in the haul he got (although he did get a prototype of the Superspace III module out of it).

What ever you could find, would be appreciated.
It's a very interesting card. It has 2 ports on it. One is for the cartridge the other is access to the card bus.
It also has a Dallas clock IC on it.
I found a software disk ...how good ? There is definitely a problem with it.
The dsr space is found in the scan but I can't load the dsr and the access led starts to illuminate with it just sitting there plugged in and no calls to it.

There was/is a cut land on the board with a jumper (crude) and to additional wire wrap jumps. There was also a pin out of the socket on a support IC...intentional.

On the board is another name of the "designer" Sofmachi ne written like that.
It would be great to find someone that owns one of these cards. One that works.


RE: Grand Ram expansion card - sjt99 - 09-24-2014

There are actually multiple cuts on the board.
Guessing these mods were done when it was made or shortly after.

Here are some photos