exxos's Atari, Amiga & retro forum

Not much. Just the schmitt trigger for the 16MHz clock, the inline resistors on both sides of it, and the capacitor on the output. I got rid of the unneeded resistor pack footprints and moved the header for the ribbon cable.

The reason I filed the corner down is because, on my ST at least, there's an electrolytic capacitor in the way.

So will these boards work with ST models that do NOT have a modulator
and/or the STacy?

If that question has already been answered in the previous 42 pages, I
apologize - I tried to hit the high points but didn't see any discussion
about it.

Thanks.

Dunno what the STacy hardware is like, but they don't need a modulator - just a socketed shifter (to remove the shifter and plug in in its place).

Smonson wrote: ↑Fri Feb 01, 2019 10:47 pm Dunno what the STacy hardware is like, but they don't need a modulator - just a socketed shifter (to remove the shifter and plug in in its place).

Thanks! Not sure how different the STacy is - I know it has a "Shadow" chip in there...

Consider this as me registering my interest in beta testing

rubber_jonnie wrote: ↑Sun Feb 10, 2019 3:09 pm Consider this as me registering my interest in beta testing

And considering I've just seen it on Ickys machine earlier, definitely count me in.

Thanks for the enthusiasm

Eventually I will make a new revision of the board that gets rid of the PCB sandwich, and puts everything important on a single 4-layer PCB. The reason why that's "eventually" is basically I've temporarily run low on funds, and these things cost relatively a lot to put together. The postage from Oz is also pretty wild.

But there's no guarantee that will solve the remaining problem (resetting) because I can't reproduce the issue here, and thus can't investigate the mechanism that causes the bus to not be driven from the FPGA side.

I could build and send out more boards, but I think it's likely some people's boards will just work, and some won't, without shedding any new light on the situation.

I'm always keeping an eye on ebay for STFMs. If I get a second one it may enable me to reproduce the issue.

You’ve got another beta tester here Smonson, if you need one (I’m in Oz as well if that helps and have a large collection I can test this with).

...Exxos talked me into it - so I'm already putting a couple more sets together. I think I have sufficient material on hand for three, assuming none of them fail testing. They're the same as the ones Exxos, Troed, and Icky have.

I can make these available for further beta testing on the understanding that there's no expectation that they will work with every machine. Plus I will have to charge 50 GBP / 75 AUD (lower because of lower postage) to cover costs.

I should have two done in a couple of days and the third one next weekend.

Smonson wrote: ↑Mon Feb 18, 2019 12:24 pm ...Exxos talked me into it - so I'm already putting a couple more sets together. I think I have sufficient material on hand for three, assuming none of them fail testing. They're the same as the ones Exxos, Troed, and Icky have.

There's a couple of people on another group who want to know the price.. Just make sure you are not doing this at a loss..

Smonson wrote: ↑Mon Feb 18, 2019 12:24 pm I can make these available for further beta testing on the understanding that there's no expectation that they will work with every machine.

"BETA TEST" That is what I do with my stuff as well, if people want the latest stuff and accept there may be issues, then they themselves make the choice if to buy the item or not. I generally offer cheaper price for basically the beta test versions as well.. They get a good deal with the "risk" as well. Generally people here are really good anyway, just want to help support projects more than anything.

I have a stack of motherboards coming soon.. All various revisions etc. so I will test the HDMI board one you sent me on all of those.. Might take a while if the shifters are not in sockets though...Then if I come across any issues, I will try the other adapter board you sent me not long back.. I will investigate the 32,16MHz clocks as well to see if I can spot anything amiss.

Will try and do this next week, but knowing how things generally go here, each time I trying allocate some time to do something, I end up doing something else instead which has to take priority But it will get done!