exxos's Atari, Amiga & retro forum

terriblefire wrote: 15 Jul 2023 16:53 Ive not had a chance to look into this for about a month. 2 weeks of which i was on holiday, 2 weeks before was a very busy period at work and this last week was reentry after holiday.

The only thing i've found out that i've not shared is that my fears of having bad reflections on the SDRAM lines was unfounded. The signals are as clean as a whistle at 100Mhz (using a 1Ghz scope).

That's great news! Hope you had a great holiday - I need to catch up with the FIsh Wives Streams =D

terriblefire wrote: 03 May 2023 21:04 I have made some progress this week.

I got the thing completely stable at 50Mhz with 256Mb of ram. 7Mb/s chipram write speed now.

Remaining todo:

1. Clock switching is sulky still.
2. Retest SCSI DMA (presume it works but will no doubt have some things needing smoothed out).
3. IDE Driver move to Fastmem at boot time.
4. IDE DMA*

* IDE DMA is a stretch goal but will ship before it is done.

IDE DMA is a big thing. Is that DMA as in UltraDMA or something that just DMAs PIO-Mode data?

DMAing PIO mode data to start with. we noticed pipeline stalls reading with CPU.

terriblefire wrote: 15 Aug 2023 08:36 DMAing PIO mode data to start with. we noticed pipeline stalls reading with CPU.

Would still be great. Currently, options for reasonable disk Performance are severly limited, in particular also considering pricing, availability and compatibility of the few options. Not to mention buster 11 pricing and availability …

I'm eagerly awaiting a TF4060 in the (near?) future. I've got an AA3000+ with BFG9060, and SCSI problems for the onboard SCSI. Not sure if those are AA3000+ or BFG9060 issues, and its a bit painful to troubleshoot and narrow down. Meanwhile, I added an A4091 SCSI-II controller (zorro3) to avoid the motherboard SCSI. That seems to work better.

I'm just not clear on the intersection of SuperDMAC (rev2) and Buster (rev11) in these systems. I have a 2nd A3000 motherboard (no case) that I can test against as well, also rev2/rev4 combo for SuperDMAC+Ramsey, and Buster rev11. This will be a system I can lay flat on my workbench and more easily swap things into/out-of for testing, evaluation, etc. while using an ATX PSU.

If there's any information about intersection (if any) of the above topics and the TF4060, I'd love to learn.

Have a great day,
Brian.

Hello Brian,
Please keep in mind that AA3000+ is a pure hobbyist project, it wasn't released officially, this means that this model is thrown together from the parts (and chip revisions) that was available at the moment, so most probably You won't be able to find two of a kind with similar timings ...
Now because of that it will be pretty hard to get all working properly... I know what I'm talking about because AA3000+ was a pain in the *ss while Matthias developed Freeway USB cards... Everything is working except for AA3000+...

Hi DJ, yup understood on the AA3000+ vagaries. Still interested in a TF4060 :p

p.s. is it almost time for TF4060 to have its own channel here?