IIfx Memory

[campbellashe]

As I'm new to the IIfx, I'm trying to find memory for this computer as I only have a total of 8MB, what is the landscape like?
It looks like given the unique 64 pin 70/80ns DIMM requirements, that they are hard to find. No real listings that I can easily find.

Has any one made them? I did see a schematic on GitHub....

Or are there people out there with 4MB DIMMs willing to sell? Would love to get to 16 MB or 32 MB if able.

Thanks.

 

[joevt]

There's this: https://github.com/hanshuebner/maciifxsimm
I haven't tried it.

 

[finkmac]

i made some of those, they work well.

 

[campbellashe]

Thanks @finkmac

I've been able to create the Gerber files from the GitHub site above. Priced out the creation of the PCBs on JLCPCB for around $7.00 for 15, and the stencil for around $16.00. The slow shipping is about $18... would need to source the chips -- can get the KM41C16000CK chips from UTSource for about 50 for $50 dollars.

I've just never used stencils before... just don't want to get too far down this.... however if memory is un-obtainable then this might be the best route.

Glad you were able to create them.... does this pricing seem right for your prior project? Did you use stencils?

 

[finkmac]

just remember to choose the right thickness.

as the github project says, it's best to use a reflow oven type soldering process... that does indeed involve the stencil.