exxos's Atari, Amiga & retro forum

@PhilC Is that another Rev 3 ST TF536 just to the right of your H5C1...? If so....you tease! :lol:

JezC wrote: 27 Jul 2021 22:57 @PhilC Is that another Rev 3 ST TF536 just to the right of your H5C1...? If so....you tease! :lol:

No, that's something a little better :lol: a rev 5

@PhilC Ooh, nice... waiting for more information about that soon - please @exxos

Given the periodic shortages of components, my second TF536 build has stalled for a few months... :(

@JezC its like a rev 3 with a couple of extra jumpers to be honest :D

I've been testing it on and off because of @exxos having far too much to do.

@PhilC Ah ok. It's mostly the shortage of the fast Xilinx CPLDs that has stopped me ordering the ST v3 TF536 from the store already.

I wish I had the opportunity to help with the developments... trying to do a bit less overtime at work, so might actually start to clear my backlog of retro project work for a change...

Downside will be a bit less money to spend on those hobbies...though we're still hoping for a bonus in September (so first chunk of that is for that Master & then see what is left after paying for the cooker & car service and MOT etc.) :roll:

The rev5 doesn't like TOS running in fast ram for some reason. Also the brand of DMA chip does odd things. It needs investigating and likely TOS patches doing. Its a huge undertaking which isn't worth spending the time on just for like 3 boards which will likely sell. No problem if someone else wants to debug it all, but nobody will :(

@exxos If only I knew how, then I would have a go.

Happy to help where I can...even have a selection of DMA chips (including IMP & non-IMP versions) I can try with H4/H5 boards...and a Xilinx programmer clone to try out.

(Note to self: try updating the existing TF536 V2 card CPLDs and test on the H4#1....)

Edit: I used to use the MACH 445/465 CPLDs and some early Xilinx 95xx parts back in the 90s, just need to refresh myself with the specifics of these newer devices and the tools