So with the IDE2SD adaptor (specifically this) and a 4GB SD card, I get a consistent 2.1MB/sec with both partitions without fastrom. With fastrom, ~5MB/sec (and no dodgy overflows in sysinfo).

So something funky with either the V.H2 adaptor or my all of my CF cards.

That’s very interesting. Just came here to post images of my adapters (before seeing the video), and mine are exactly the same. The one with the transistors does work in my A600, but not connected to the 534. ... I have the V.H2 version of the adaptor and in sysinfo, on my first 100MB partition I g...

@alenppc bad clock buffer or oscillator going flaky after getting warm?

Install MMUlib and run mufastrom?

Also, if you watch the latest vid on the CDTV issues, you'll find DMA to TF 32bit RAM is not supported.

I purchased a couple from here and they both seem fine at 50Mhz: https://www.ebay.co.uk/itm/202667387551 Hmm maybe I'm just unlucky - they look like the same generic China warehouse ones that I've been getting (from other sellers). If you are game, would your rub the surface with some isoproyl alco...

Anyone got a lead on non-relabelled FPUs? I seem to always get ones that don't like >33MHz :s

Congrats!

Stumbled on Spidi's CDTV card: Shame his stuff is closed source and you can't build one yourself, and that he doesn't share any info back to the community :( That board also doesn't have a CPU and is CDTV specific, so there could be some cheats involved that a more general accelerator (proper) coul...

I think it was stated that the kipper (redesign) expansion doesn't follow autoconfig properly. So the TF534 using ZIII space makes it "compatible" by not using ZII space. I can understand not wanting to screw with the TF530 firmware just to make a non-compliant expansion compatible, even though they...

Found some useful info here . In particular, see the descriptions of how /CSS and /CFGIN are used. So $E900000 is where the CDTV/A570 DMAC essentially hardcodes itself but also where the SPI port on the TF534 is hardcoded . When I get a chance I'll do a test by disabling the SPI port in the firmware...