Search found 985 matches

by Chr$
Fri Jun 24, 2022 8:30 pm
Forum: Hardware
Topic: QLUB Adapter - Initial Release...
Replies: 171
Views: 29431

Re: QLUB Adapter - Initial Release...

Just noticed the Teensy 2.0++ is discontinued.

https://www.pjrc.com/store/teensypp.html
by Chr$
Thu Jun 23, 2022 10:16 pm
Forum: Hardware
Topic: DIY RAM EXPANSION
Replies: 89
Views: 44965

Re: DIY RAM EXPANSION

Hi Chris! Looks great :-) As for a 'disable' feature, I have done this before (for a very different RAM Expansion design) by allocating a pin on the GAL for the purpose and adjusting the decoding logic to take account of the state of this input. Happy to share my (far inferior) design via PM, shoul...
by Chr$
Thu Jun 23, 2022 3:49 pm
Forum: Hardware
Topic: DIY RAM EXPANSION
Replies: 89
Views: 44965

Re: DIY RAM EXPANSION

Digging up this thread again because I had some internal RAM PCB's made based on the design/discussion here but using SMD RAM chip and GAL, so that it can be fitted without having to change the CPU socket and without rubbing up against the ZX8301. A mistake was made on the PCB and one of the GAL pin...
by Chr$
Wed Jun 22, 2022 8:55 pm
Forum: General QL Chat
Topic: Vacuum forming dongles
Replies: 0
Views: 57

Vacuum forming dongles

I got a vacuum forming machine (a small model aimed dentists). Plastic sheets 130x130mm fit inside and that's just about enough to practice replicating some original ROM dongle/kludges, which are of course vacuum formed in the first place. Making the master from the inside of a real dongle was quite...
by Chr$
Mon Jun 20, 2022 5:48 pm
Forum: Hardware
Topic: New Q68 Case
Replies: 5
Views: 267

Re: New Q68 Case

Derek_Stewart wrote:
How do you handle supression of RF Signals? which is big issue in the EU...


I don't! It's just going to be an ABS plastic housing, I don't think that's relevant for non mass produced hobby projects.
by Chr$
Mon Jun 20, 2022 2:51 pm
Forum: Hardware
Topic: New Q68 Case
Replies: 5
Views: 267

Re: New Q68 Case

On the subject of Q68 housings - I hope to get a small vacuum former machine in the next couple of days. Among other things, I was going to try to make vacuum formed housings for the Q68 and my QL-VGA. Hopefully they end up looking very Sinclair ROM dongle/kludge style in shiny black vacuum formed p...
by Chr$
Mon Jun 20, 2022 10:24 am
Forum: General QL Chat
Topic: Show us your kit!
Replies: 10
Views: 463

Re: Show us your kit!

Sparrowhawk wrote:Interesting re the plastic cases. Thanks for info.

Or was it for the Sinclair official disk drive expansion. That would make more sense!
by Chr$
Sun Jun 19, 2022 4:06 pm
Forum: General QL Chat
Topic: Show us your kit!
Replies: 10
Views: 463

Re: Show us your kit!

Hi - I've just realised it was you who PM'ed me about seeing my QL stuff :D The A&B case is indeed the original. Damon obviously did not have budget to do QL style cases, so he sensibly (imo) just used cassette cassette cases with home printed inlays. For my money, A&B is the best shoot-em-...
by Chr$
Sun Jun 19, 2022 3:33 pm
Forum: General QL Chat
Topic: Show us your kit!
Replies: 10
Views: 463

Re: Show us your kit!

The Dark Side of the Moon is quite rare! It's only the 2nd one I've seen (and I have the other one. Edit: I think Mr RWAP also has one). I know someone who'd probably pay a very pretty penny for that. And what's that Assault & Battery jewel case, is that original? I can't remember what it's supp...
by Chr$
Tue Jun 07, 2022 1:23 pm
Forum: For Sale
Topic: QXL for first comer
Replies: 5
Views: 338

Re: QXL for first comer

If you won't post to Germany I'd be willing to provide a UK address and then forward it to tofro.

No offence BackToQL, but tofro does a lot for things QL, should not face any disadvantage because of his location and he was first in line. ;)