CyberstormPPC and more than 128MB RAM

[Zac67]

Piru wrote:
The 128MB limit is the limitation of the A3000/A4000 CPU Slot.

How can the fast slot limit the memory that lives completely on the CPU card? As long as the RAM controller and the CPU can access the RAM, I'd venture there's no limit (apart from possibly Autoconfig).

[Zac67]

Thanks for the info, guys. I'd always assumed CPU card RAM got Autoconfig'ed. I guess it wouldn't actually be a great problem to have non-DMAable RAM on the CPU card (flagged that way), given the 'vast' spread of Z3 boards using DMA, but that's a very good reason for not exceeding 128 Meg when these boards were designed.