The "fault" was the time wasn't advancing, but it wasn't something I actually took notice of on the last batch of boards during testing :roll: , So I don't know if they had that problem when shipped or not. I did have a lot fail on the last 2017 batch, but I had a lot of issues with solde...

I half recall it was a shadow register in the shifter ?, where the values is held in ram and the shifter ? I might be thinking of something in GLUE and shifter or something, can't exactly remember now . FF820A = GLUE FF8260 = Shifter, shadowed by GLUE At least that's what I have somewhere in my not...

Finally, this mystery has been solved. A clue was indeed in why sometimes after reset the videomode wasn't correct. The resets were caused by TOS detecting a change to mono. A bootsector that immediately disables the TOS reset vector at $46e (resolution change vector) stops the 520ST (where I did th...

Wow. It absolutely is. Connected up an HxC slim to my beautiful internal floppy header in the 520ST and booted ... Closure. No resets at all. So previously I had looked at /MONOMON with my LA to see if it triggered - since one of the few ways an ST resets cleanly is when TOS detects a mono monitor h...

I'm not less confused. Fatter GND and resistor on VSYNC made no difference. So just to rule out the possibility that the FPGA is fine and _both_ my doubleST and 520ST are weird I pulled up a non-recapped pure stock-as-stock-can-be 1040 STF and put it in there. Booting without a disk in the drive, or...

When you're done I'll print this as well (Ultimake 2) and verify with one of many PSUs laying around here. I have M3 nuts and bolts already.

Good remake of the original metal design into something more suitable for 3D printing!

exxos wrote: ↑Fri Sep 14, 2018 10:36 pm ? Wire 12V to what ? Nothing actually uses 12V on the board other than the 12V pull up on the RGB port. (not sure if that's needed for scart switching)

The ubeswitch uses the 12V pin on the monitor out.

Forgottenmyname wrote: ↑Fri Sep 14, 2018 10:26 pm I've got a ubeswitch connected.

Ok Then you need to manually patch it if you don't have a 12V source (I think ube wrote how in one of these threads). And without ram maybe that current usage would actually be correct.

I've plugged the board into my bench power supply, just the two five volt and two 0 volt rails and recorded a current use of 440ma. None of the components are even warm to touch after being on for 5 mins but no video as yet. I presume the lack of video is due to a lack of 12v going to the board? wh...

I guess patched code could check the register to see if a write fails or something.. Then it knows if its running on the new MMU or not... or just separate patched versions of software :shrug: Yeah that's no problem. Demos can easily check to see if the functionality is there, and new TOS images co...