It'd suck to have no DMA to this memory.
Not really. Anyone with an A500 or A2000 with more than 10M of RAM deals with this everyday, and I never considered it a problem. You just install as much expansion DMA-able RAM as you can and when you need DMA, that's what you use. The memory priority is such that the DMA-able RAM usually doesn't get wasted on non-DMA data/code.
The question was if CSPPC could be made to have more than 128MB. It can't.
Much agreed. Aside from whatever you believe the fast slot can/can't do, the CSPPC simply cannot support more than 128M of RAM, at least, not without additional hardware. Phase 5 did say at one point they might build a RAM board for the PPC local bus socket. But, then they announced the CVPPC, and after that no one ever talked about plugging anything else into that socket.
Here's the bottom line: You cannot put SIMMs larger than 32M in the CSPPC. At least, you won't get more than 32M per SIMM slot, no matter what you do. I can tell you this: If you put in two 64M SIMMs, you get 8M of RAM. If you put in four 64M SIMMs, you get 16M of RAM.
Now, it was rumoured that some of the later CSPPCs built by DCE would accept two 64M SIMMs in place of 4 32M SIMMs, *but* even the rumour (which I don't personally believe because I've tried it on one of the last ones produced) said you could not have more than 128M. The only reason you would do this was for more clearance in an A3000D.
