The Sinclair QL Forum

Talking of Startrek clones on the ZX81, many years ago a chap called Kilian Schlaich made a version that was retailed by ISS in Germany. I found a copy in 2019 and was able to digitise it, then track down Mr Schlaich. He gave me permission to share it freely and because the cassette contained no ins...

OK, In the ZIP file attached there is the GAL program with a Enable pin. (a .JED file for direct program the gal and a .PLD program for compile with winculp) To work as a memory upgrade, PIN 2 should be conected to 5V, if it's conected to 0V, the memory expansion will be disable. You can use a SPDT...

I last updated/used SMSQ/E on my QXLII about a year (maybe 2) or so ago and had no issues with the keyboard. Can't remember what version it was.

OK, In the ZIP file attached there is the GAL program with a Enable pin. (a .JED file for direct program the gal and a .PLD program for compile with winculp) To work as a memory upgrade, PIN 2 should be conected to 5V, if it's conected to 0V, the memory expansion will be disable. You can use a SPDT...

Yes that looks right.

I notice on the 3D model of the plastic upper part, it should be higher, actually about 21mm in height (they are quite chunky). This is probably to allow enough space for the EPROM(S) to be socketed.

If you want to check your PCB size specs: The original board is 84mm long by 38mm wide. The circular cut-outs are 8mm diameter at the widest part (the edge of the PCB) and are 5mm deep into the PCB, therefore the distance at the narrowest part of the PCB from one cut out to the cut out on the other ...

Silvester wrote:In addition to spare input pin (for enable switch) it will require RESET (to clock enable/disable condition through only on reset). Something I forgot to mention Chr$

A connection to RESET on the CPU you mean? That shouldn't be a problem.

Hi, I have a bit of knoledge on programing gals, not to much, but enought to program by myselft a gal for memory expansion. If you provide me the schematics, I can do code to use a spare pin as enable/disable. I will also be interested in 1 of this PCB if yet available. The only problem with your d...

Looks awesome!. Because I clone some time ago the PCB of the cartridge (here: https://github.com/alvaroalea/QL_Rom_Cartridge not sure if is OK, because I do it from pictures of internet) I also tried to do the case, I have Mold Press from We R Memory Keepers that I think is about the size of yours,...

Just noticed the Teensy 2.0++ is discontinued.

https://www.pjrc.com/store/teensypp.html