DSTB1: testers for rev 2 firmware (requires modding a rev 1)

[Badwolf]

No it can’t run with a faster clock already tested it with a hbs640 with just the clock at 28 cache off.
So will just safe it for another project and keep the dstb1 in the old stf….
Fist thought it was a dstb1 thingie but it is not…

Well, it probably is -- as explained by the clock business. But, you know, compromises. :(

EDIT: unless it's a register conflict, of course. I don't know if they're documented for Lightning.

BW

[Oldskool]

Found another issue with the blitter.
If activated in menu the system will crash @ 16 mhz.
At 8 mhz it’s ok.

IMG_3412.jpeg

[Badwolf]

Found another issue with the blitter.
If activated in menu the system will crash @ 16 mhz.
At 8 mhz it’s ok.

IMG_3412.jpeg

Hmm. I spent a long time chasing getting the blitter to work & it was for me last time I tested.

If blitter is misbehaving for you, that probably goes some way to explaining your previous problems with ACSI devices (both are DMA).

Sadly I don't have the time to really work on this ATM.

[Oldskool]

Should I try another firmware version ?

[Badwolf]

Should I try another firmware version ?

I'd only use the latest if I were you. I built you some debug builds but I can't remember what each of them did differently now, so I doubt it would help anyway.

Unfortunately this seems to be a bus arbitration issue that you keep running into and I can't replicate even if I could spare the time at the moment.

The project is, of course, open source so the absolute best thing would be if you could try building and flashing firmware yourself. Then you can experiment in situ and if we find a solution, publish it.

I still have to get around to finishing the rev2 design incorporating the fixes we've made using the bodge wires too.

BW

[Oldskool]

Not sure how to program a cpld. I’m just a “tester for rev 2 firmware”.

[Badwolf]

Not sure how to program a cpld. I’m just a “tester for rev 2 firmware”.

Yeah, no problem. And thank you for doing that! I don't have the same set up on my bench as I did when I was working on this one year ago, I'm afraid.

Currently I'm working on a Falcon motherboard in the shed and have a more complicated STFM project on my desk.

BW