[2] Copied sysvars, and system tables to screen0, as shown earlier. Not necessary. VideoRAM is not bank switched. Pointer to start of video memory swaps between two various addresses. I am surprised to see some visual activity at the top 5-10 lines after switch to screen1, while when at screen0 the...

Absolutely.

For me it is simply "the Unix for the rest of us".
Simplicity and imminence of Basic combined with power of all that multitasking, networking, pipes, windows, ...

Can you provide a link ?
I have never seen any for sale on ebay - only serial to DB9 adaptors.

https://www.ebay.co.uk/itm/Sinclair-QL-CTL-Joystick-Adaptor-Cable-Light-Grey-Cable-/173807531157

Auction is now active (ends 24 Mar 2019).
But will be sold soon

How hard would a PTR_GEN file to integrate the Mice system into the Extended Environment. QIMI and similar interfaces have counters built-in, and only time per time (interrupt) the current mouse position (or its delta) has to be read. mICE is simple interface where it is necessary to read status of...

What media image is inserted into the Gotek?
Is it formatted?

This one was found in Hornbach:
https://www.dropbox.com/s/fr46xdnjju9us12/IMG_7580.JPG?dl=0
My friend tried it with ZX Spectrum and succeded.
https://www.dropbox.com/s/w2gzb06uv0bowe4/IMG_7581.JPG?dl=0

According to SiLabs and CMX page, there is "royalty-free MicroNet TCP/IP stack from CMX", for the "Freescale 68k" processor.
But they require registration for download.
http://www.cmx.com/cmx_dload.htm

What ethernet controller does Q68 use?

Some ethernet chips have TCP/IP stack built-in...