The Sinclair QL Forum

I tend to go the other way and use PS/2 keyboards for use with some of my retro computers... I do so as well. Torturing yourself with a non-optimal keyboard is all-right if everything is original. But I really don't see the point doing that when modern hardware is involved.... I normally type a lot...

I didn't realise that Sandy released just a bare disk interface (with parallel port). http://www.rwapadventures.com/ql_wiki/index.php?title=Sandy%20Super%20Disk&lang=en :D The SuperQBoard version 2 was apparently produced in a severely downgraded (crippled?) version only partially populated as ...

There were, as far as I know, 2 revisions of the SQB - I used to have an earlier one, that was as described above (large heatsink along the DIN connector). The mouse one (that I never had) apparently had a memory daughterboard. In this case it must be one of the later "SuperDisk" boards be...

No Sandy board, IMHO.
The SuperQBoard had the 7805 + long aluminium heat sink towards the QL end.
Apparently, there's also a parallel port and no memory expansion (and no connectors to an optional memory expansion that later SuperQBoards used to have)

Tobias

Maybe I didn't make myself clear enough: <CTRL><ALT>7 does re-set the IPC. But as the communication between IPC and "main" QL is in no way secured and breaks as soon as one of the two partners is not compliant with it (which happens if the IPC stops to transmit in the middle of a transfer ...

Not to my knowledge. You can press <CTRL><ALT>7 , that will reset the 8049. But also resets (and thus, confuses) all comms with the IPC, so it's not really useful because it will also kill your keyboard normally. If all channels to the serial ports are closed and it still doesn't work, I'm afraid yo...

Martyn, the fact that you get some bytes across when opening and closing the channel on the receiving end hints - to a misconfigured cable. Opening and closing the channel will toggle DTR - If this is connected to CTS on the PC end instead to DSR where it belongs, you'd see exactly the effect you ar...

Nice. Probably not easy to find a replacement ;) From nasa.gov: Question: What kind of computers are used on the Voyager spacecraft? Answer: There are three different computer types on the Voyager spacecraft and there are two of each kind. Total number of words among the six computers is about 32K. ...

Yes, as Peter has pointed out, DOMs normally have a non-standard IDE connection that connects them to +5V. The QubIDE re-make supports that. If you want to connect the DOM to a PC, however, you will usually need a separate Power Supply - Normal USB-IDE adaptors do not normally supply the DOM on this...

Jose Leandro, Good you got it fixed. I'm actually not sure I can see the wires in the picture, but I think I will be able to connect them to the right pins on my board. BTW: VPAL is actually not a video signal, but rather "Valid Peripheral Address Low", used for interfacing with legacy 680...