The Sinclair QL Forum

Ah, thanks

That makes sense. So we are making the CS lines more granular, but still using the overall select for that I/O area to gate the other signals through the GAL(s)

I was planning on decoding 4, so just need to use 2 of the address lines A4 and A5 then.

Many thanks for the response.

Wow - that was my old rig ! I sold it to the fellow in Godalming ! The PS/2 port is i2c port from Minerva, wired to the same specification pin out as the I2c kits that appears in Elektor magazine. It did have a switchable mouse with it - Amiga and some other mode - can't remember exactly. The case w...

I've seen in the manual for Qubbide the mention of multiple Master drives upto 8 or 16 depending on where you read it. How is that done? I have GAL equations for Qubbide - not sure which version, but these have the amendment for alternate status register - dated 1998 Jul 07. Looking at the manual an...

Excellent news - I did try and PM, but it looks like I must participate more in order to unlock the golden key to be able to PM. :lol: I am interested in it though - and see you have an email address on your profile - is it ok if I use that and just put a reference to our discussion here? Thanks, Da...

As per the title - I am after an electrically broken motherboard for standard QL. It's more about having a template to work with. It can be missing connectors, components, broken tracks - just need it for the physical dimensions of the original board, happy to pay postage and a small amount of beer ...

Ex owner, came across the forum in my searches online for all things QL. I had 3 of these, before selling up. But I have a love of old hardware designs and making my own little mods to them. Currently have several projects on the go - a P112 z80 based system on the build, in an old media server case...