some Party message on bootup...

Would these SIMMs be the same SIMMs that would have been used in Pentium 1 PCs, of which my department rcently scrapped a load that some how all went out the door with out RAM?
So I'm a packrat, and this does sound intresting.

My memory is lousy on this stuff (memory versions/sockets), and I didn't write it down, but "memory module, 64M, still very available dirt cheap" points to something like that...

Still, Patrick came up with the idea on the spot during the discussion and hasn't yet (well, who knows by now ) looked at the nitty gritty -- just so we don't jump overboard...
Chip stacking is proven to work and even 32M is probably all one's likely to need. Hmmm, where'd I hear something similar..?..

One big thing about this lovely idea was that it'd be an easier (soldering wise) route than the chip stacking.

Still, Patrick came up with the idea on the spot during the discussion and hasn't yet (well, who knows by now ) looked at the nitty gritty

We watched Patrick sit in the bar for a couple of hours last night, busy designing the upgrade module on his laptop (while entertaining us with his usual ramblings of course).

When he first discussed it on the Saturday he was talking about an existing SIMM (or was it DIMM) plugged into a module soldered where the current memory chips are.

By the time he had finished last night he instead had a board design that would sit under the mainboard, with memory chips soldered directly to the new module. The circuit board design was titled "Empeg Mk2 128MB upgrade board"...

He wasn't sure if there was going to be enough room for it. He said he was planning to work on it some more over the next couple of weeks.

Initially I had a similar idea of using some sort of daughter board,
desolder original memory chips and solder thin flex wires to the mounting points of the chips. The problem with that setup was that I needed a lot of through holes on the daughter board since I cannot make routing lines between the 0.8mm pitch of the chip legs (at least not in my home-brewed prototyping lab), so I gave in to the stacking solution.

You see, I'm not really satisfied with the memory size until my hard drives spin only once per each play list (e.g. an album).

Besides, the SA1100 chip does not have math co-processor, so that makes it slower than say Pentium 200 Mhz.

He's on design number 2 now, and routed it this morning - it does tend to mean rather a lot more memory than he originally thought....

Ahhh...

Well, the more the merrier I guess

Will it coexist with existing upgrades?

No. ALL the existing memory chips will be removed and the area will have to be cleaned so the new bits can bit fitted. Don't envy Rob on that task

Lordy, what a MACHINE that guy is. Without looking, I wonder if a DIMM slot could be mounted on the sidewall of the board. Or, on the bottom of the back of the drive tray. But heck, if he can make it fit on the underside, than rock on.