The Sinclair QL Forum

Just a thought - this device might not only be useful for just QLs but for PCs as well. If you want to make a trip down memory lane and connect oldskool DOS FidoNet/BBS systems that can only handle AT-style modem commands to Internet you have only a few options - DosBox (which doesn't work well on f...

Well, to be even more precise, the Trump Card ROM actually lives in more than one place during the boot process. Initially, it lives at $C0000 (otherwise the ROM wouldn't be recognized by any Sinclair ROM), and once it's initialization code is running, relocates itself to the "internal I/O&quo...

That is, unfortunately true only for the last QL ROMs (JS, MGx, and Minerva, to my knowledge) and SMSQ/E. There were a number of bugs in the earlier ROMs that lead to the fact that some (OS) ROMs could not simply overwrite existing drivers, some (OS) ROM versions also wouldn't find an initialize mo...

I'd guess whoever has the original Tandata hardware has the right to use the software, as it was never sold separately to my knowledge. I would also guess whoever hasn't, would obviously have not much use for it. I'd guess owning the hardware is enough proof of purchase, at least for the original T...

I used DPD for Zarchos Q68 parcel. Which seemed to track nicely. I find DPD working very well. But there has been comments that DPD is not good. My parcel was handled by DPD once it got into NL and tracked very nicely, I could even redirect it to a nearby pickup point when I was not at home at the ...

Martin_Head wrote:Also, I don't think the MicroP interface supports directories.

Definitely not.

Jan.

To my knowledge, all of the contemporary disk interfaces (and especially the MP interface, as it was also available in a sinclair-re-labled version as "the official" Sinclair disk system) use the same standard floppy disk format. This shouldn't be a problem. The "non-standard" r...

Update: On the Q68's TxD line I measured about -5V when not doing anything ('Mark' level) so it's not quite at official RS-232 levels but still within specs. I guess the RxD line will be compatible with +/- 12V too so it's probably safe to connect a modem. It's still a pity that it doesn't support D...

Thank you Derek for the information. I know there is no +12V pin on the Q68 serial connector. But my question was about the signal themselves on the Rx and Tx lines. The RS-232 standard stipulate (from memory) that a bit value of zero is transmitted with a volage anywhere from -3 volts to -12 volts...

I've made some photos of my Q68 - both cased and uncased - which can be viewed here . I just notice the Minerva picture ;) Is it a standard 1.97 ROM? Yes it's 1.97. It boots, but freezes after the F1/F2 timeout. I guess because the 8049 isn't emulated by the hardware? This probably will need a rewr...