The Sinclair QL Forum

A member of the Sin_QL_air user club has even made a ROM cartridge with built-in cassette interface.
Note the extra LED and 32K EPROM so you can switch between two ROM extensions...

Jan

This is the interface I was referring to. The LOAD section should be connected to the recorder's headphones or line out jack. The purpose of the battery and 2k5 potentiometer is to provide a pull-up to the QL's net input so it's just around the point where bit 0 of I/O port $18020 flips from 0 to 1 ...

Hi Mathias, Hello Jan, I recently read on Your github basicode repository, that you had designed a tape interface for the QL using qlnet. Can You provide documentation, schematics to built this interface? Another question is: what is the prefered way (and requirements) to to load basicode files on a...

NormanDunbar wrote:The locals problem is a bug. 9 is the limit. Maybe SMSQ has fixed the problem of course.

I've had similar experiences with too many LOCals on JS. Minerva and SMSQ are fine.

Jan

So then I could substitute the TxD pin for one of the two I need. That still leaves me short the other pin since it needs to be toggled low/high for the other two states. BTW, I do have a Hermes chip, does that give me a leg up on the problem? You can use RxD on SER1 (which is the output line, like...

So, can one easily control DTR and CTS directly? I'm guessing perhaps a couple of TRAP calls since I doubt you can do it via SuperBASIC. With a normal serial connection the DTR/CTS is controlled by the 8049, indirect to the user, correct? There is no way to control the outgoing DTR/CTS directly, as...

Count me in please - you've got mail.

Hi, The Raspberry PI can indeed be connected to other computers via the serial port connection accessed by the GPIO pins. I do not seem to find a use for this, as the Raspberry PI, while good product at a low price, is a slow Linux computer compared to the Core i5 computers I have running my Virtua...

That's Norman's docs that say "preserved after TRAP#4" - Other's don't. I guess that's more of an observation than a system commitment. From a JS disassembly I can determine that A1 isn't preserved at all. The only thing a TRAP#4 does is to set a bit in the job header, which is read by th...

Its a documentation bug if anything. The official documentation, ie QL Technical Guide, now QDOS/SMSQ Reference Guide, has always stated that A1 gets smashed during the IO.OPEN call. The QDOS/SMSQ Reference Guide is now in version 4.5, available from Dilwyn's cornucopia. While its not perfect it wi...