The Sinclair QL Forum

Then it seems you have some faulty logic driving the lines to the interface.

In order of likelihood, descending order: Bad floppy jumper settings - tested Bad floppy timing settings - tested Bad floppy cable Bad logic on interface Failing PSU in floppy enclosure Incompatible EPROM (it could be trying to use a different version of hardware, and getting what it interprets as n...

I will check on this later this evening. Luckily the second GC is here, so I can simply swap the known good RAM onto the SGC and see if it makes a difference. I just know this is Doug LaVerne's spare SGC which he loaned me so it gets some use. That is what freed up the second GC for sale. It makes m...

This is a fundraising sale to support development of new hardware :) I have listed some new old stock QL power connectors on SellMyRetro.com. These are £12 each, including free worldwide shipping by airmail (or first class if you're in the US). I only have a few available, so if you have a QL that w...

This is a fundraising sale for hardware development :) I have posted a Falkenburg Keyboard-90 with an included Hermes 8749 chip on SellMyRetro.com. The Buy It Now price is £35.00. You can find the item here: http://www.sellmyretro.com/offer/details/Keyboard-90-interface-by-Computer-Technik-2654

Hi all, I was going to list a second Gold Card, because I have a loaner SGC. I know the SGC came from a system that had some problems, but, alas, the problems were worse than I imagined, so I am going to hold off selling the second Gold Card until either the SGC or the Thor XVI is working. When I pl...

dilwyn wrote:I was quite excited when Adrian Ives and Peter Graf were discussing their SD card interface but disappointed when Adrian withdrew from the market.

I would be happy to manufacture those, if given the opportunity.

My take on this is that floppy support is required, but that everyone already has an interface that supports floppies. The card I'm looking at would be kept deliberately simple - a 68EC020, a chunk of RAM and the needed glue logic. I have been looking at the pPropQL020 design too - which replaces th...

Compliments. This all sounds really promising and I wish you all the best and success. I didn't know tht funding was the main obstacle but would be happy to donate if this should come up again. May some others too ... Keep us informed, thank you. ;) Yes, funding has always been the main obstacle. M...

When I was making my list of projects, one that came up was a new batch of QubIDEs, but with a re-designed PCB that had a CF slot. I thought about making a CF carrier that would fit in the mdv slots. However, it would work out kind of expensive (around £80) so I didn't think I could sell enough to b...