The Sinclair QL Forum

Yes, that line should step low until it times out.

A CF reader is probably the easiest of those, because it can use existing drivers for the QubIDE. However, a USB interface would open up a lot of opportunities for us. Ironically, using the GPIO pins of a Raspberry Pi might be one of the easier ways to implement meaningful USB on the QL, offloading ...

Well well well. I removed the heat sink and investigated underneath. I found a floating single whisker of what looked like cotton but ended up being copper wire sitting on the pins of the 7805.... I removed that, reassembled, and now it boots. It's possible that getting intermittent unregulated 8-9v...

Define 'lots'...

This SGC was used unreliably in a cased, QPlane'd system. It was powered off the backplane, so was probably receiving inadequate power the whole time. There was no 5V flying lead to the card. For those following, the manual says: EXTERNAL POWER INPUT If you are using your system with a standard powe...

I ordered the following today. Can anyone guess what I'm making? 110 P1.00KFCT-ND RES 1.00K OHM 1/4W 1% 1206 SMD 0 0.028 $ 3.08 165 399-3676-1-ND CAPACITOR TANT .10UF 35V 10% SMD 0 0.1645 $27.14 220 493-1036-ND CAP 10UF 16V ELECT VR RADIAL 0 0.0884 $19.45 55 NJU7660M-ND IC DC/DC VOLTAGE CONVERTER 8-...

Unfortunately, it's not the memory. I removed the memory and checked the pins, tested the functionality on as compatible board from another device in pairs, all the memory testing okay. I believe this SGC was hand reworked previously. The CPU was hand soldered and the flux had been left in place. Th...

Pin Dir Name Description 2 - unused Head Load (not used with the FZ-1) 4 out /BUSY drive lamp lights when low (same as /DS0) 6 out /DS3 Drive Select 3 (tied to Vcc) 8 out /INDEX Index Pulse 10 out /DS0 Drive Select 0 12 out /DS1 Drive Select 1 14 out /DS2 Drive Select 2 16 out /MOT Motor Enable 18 o...

Light blue touch-paper and stand well back, eh Dave? :evil: *grins* No :) I have fond memories of Quanta :) I think where Quanta is concerned money isn't a problem and willingness isn't a problem - inertia is a problem. I would like to see a separate Quanta area here, and not just to get rid of the...

It's heart-breaking to watch.