digger wrote on 2025-07-03, 22:59:

For conventional memory, I'd reckon those waitstates might have quite some performance impact.

For EMS it might not matter as much.

It would be good to get some benchmark results to find out.

Exactly.. this is precisely what I was thinking. Tbh, I have 192kb UMB and 640kb base RAM already, I'm most interested in the EMS feature. 4mb EMS board would be the ducks nuts for me, but I'm less keen if it's going to run slowly like PS-RAM at 900kb/sec on the 2350 ..but I believe the PicoMEM is 2040 based.

I'm half tempted to write a utility to see what can be read/read per second but would prefer if there's an existing standard solution.

I've just got a PicoMem working with my Amiga 2088XT BridgeBoard card, and it's a wonderful piece of hardware. I have two questions, though:

- Floppy boot hard-hangs the system when the extra 128KB of PSRAM is enabled. I originally thought this was expected due to lack of DMA support, but I'm running the PM_x_5_36_25_x firmware and there's a comment from the earlier PM_W_Jan1 release notes that 'New: PSRAM Code improved (DMA Added)' - should this now work?

- The latest firmware also adds RTC support; is there a way to keep this powered without a permanent USB connection?

Thanks in advance!