Currently CD boots 2 - 4 times out of 10

Not on TF534...

Ok,
Tried with SD to IDE adapter - muFASTROM works now, however it shows lower speed for first partition..

Realised that Your TF534 is 40Mhz while all my tested TF534 cards are clocked @50Mhz this makes big difference...will wait on Steves test to be sure... For now seems to be a rev 4.x issue.. Maybe Commodore built another "oooops" mistake just like a wrong routed ks socket on rev 3 & 5 A...

terriblefire wrote: ↑Mon Jul 08, 2019 3:34 pm Either that or send it to me (without cpu). it'll be useful to understand whats wrong with it.

assume Alen tried different cpu's already, since it's known many 33Mhz MMU ones are picky on 50Mhz

alenppc wrote: ↑Mon Jul 08, 2019 12:56 pm I wanted to make a video of the 536 this weekend but I couldn't even get it to complete booting... so I gave up.

Alen, send Your card to me, will take a look, maybe i'll be able to fix it...

I have the V.H2 version of the adaptor and in sysinfo, on my first 100MB partition I get a really slow 700kb/sec. On the second ~3.4GB partition it's glitchy and returns immediately with values between 1.5MB/sec and >10MB/sec (impossible). Tried a few different CF cards too. Though drive access see...

terriblefire wrote: ↑Sun Jul 07, 2019 8:22 pm Its funny. My first Amiga was an A600.. yet i've never build an accelerator for it.

You already did, Steve
We just need to figure out how to fit it inside the A600 case

It was cracked looooong time ago. It is ctually same program You use to upgrade Your TL866 from "C" to "A" versioN.. Just use google search and You'll find what You need

Well... i do understand that, however there are so much A500's around..like a sand on the beach. Thanks to DIY Megachip upgrade available - there is no difference between A500 & A500+ anymore, beside of that - there are brand new A500+ A1k pcbs, so why fiddling around with these dead pcbs? That ...