@JLPedro

indeed, they do look standard, but alas there not, the memory controller is very ARCHAIC to say the lest.

Memory as you know is organised as a matrix of cells now... this matrix arrangement has 3 differing types.

Square Matrix (like a map)

Fat Matrix ( like a rectangle )

Thin Matrix ( Like Door )

Now an intelligent memory handler would be able to PROBE the simm for size, and then do three tests to ascertain the Memory Matrix format, unfortunately back in the day was very expensive micro-controlling and so, a static expectance of matrix type was adopted...

GVP 64pin SIMS use a FAT matrix memory cell structure and from this auto organize the memory for use, its only when it uses two banks of memory one could see it as a square, but even then its not a REAL contiguous block.

this is from what i have managed to study atleast.

Getting 16MB ram SIMMS for it will prove VERY difficult, I know of nowhere to get them, and if you manage to, the price will be very prohibitive!

I have asked on AmiBay if anyone wants to donate me a 4MB or 16MB 64pin GVP SIMM for me to dismantle, this way i can have clone boards manufactured and just populate them with the common chips.

we shall see