Search found 391 matches

by Pr0f
Tue Dec 03, 2019 7:43 am
Forum: Hardware
Topic: Replacements for Zx8301 / Zx 8302 / IPC
Replies: 6
Views: 281

Re: Replacements for Zx8301 / Zx 8302 / IPC

That's good to know Rich - so the ZX8301 is the more ciritically endangered species then! ;-)

Are SuperHermes still available? I see the odd Hermes coming up on retro...
by Pr0f
Tue Dec 03, 2019 7:41 am
Forum: Hardware
Topic: Issue 8 discussions...
Replies: 135
Views: 16170

Re: Issue 8 discussions...

It would support the internal QL-SD, or Tetroid's new external QL-SD fitted externally or internally. That said, I haven't done any work on it in 8 months and I'm not likely to for the near future. I haven't talked with Nasta for a while, and he is central to the project. I really need to send him ...
by Pr0f
Mon Dec 02, 2019 10:03 am
Forum: Hardware
Topic: Replacements for Zx8301 / Zx 8302 / IPC
Replies: 6
Views: 281

Replacements for Zx8301 / Zx 8302 / IPC

Given the fact that none of these chips are getting any easier to find, and have some shortcomings - certainly for Zx8301 and driving current monitor technology, I thought I would start a thread based on the possibilities for replacements for the above, not aimed at suggesting an absolute suggestion...
by Pr0f
Wed Nov 27, 2019 11:01 am
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 103
Views: 6150

Re: Bad Apple demos

an area where I am completely clue and talent-less: music! So, after all, your planet-sized brain is more similar to Mars than to Jupiter :-) Well, in German there is the word "Fachidiot" (literally "subject idiot", somebody who is very good at one thing and not so good most oth...
by Pr0f
Tue Nov 26, 2019 9:09 am
Forum: Hardware
Topic: Issue Tx boards discussions
Replies: 28
Views: 1323

Re: Issue Tx boards discussions

you have 2 choices here really - either wire them both as DTE and keep them maie connectors, or wire one as DTE and one as DCE as per the original intention of the QL design, and use Male / Female connectors. DTE - male, and DCE - Female. Since ther is an abundance of both straight through and cross...
by Pr0f
Mon Nov 25, 2019 11:32 am
Forum: Hardware
Topic: Issue 6 board updates
Replies: 39
Views: 3566

Re: Issue 6 board updates

I spent too long looking at Car ECU's for friends to identify various components on the boards and do repairs / mods... Eproms are the easier part to identify, but you get a knack for looking at a board and seeing component footprints, connectors, jumper positions - that sort of thing... Useful for ...
by Pr0f
Mon Nov 25, 2019 10:16 am
Forum: Hardware
Topic: Issue 6 board updates
Replies: 39
Views: 3566

Re: Issue 6 board updates

From the pictures - 9 pin D's for CTL and SER ports, a single 9v DC in standard power plug, DC-DC converters for 5V and the +/- 12-15V for the serial driver chips, and a composite output on RCA phono as an option rather than UHF regulator. Also seems to be a new LED position off to the back of the b...
by Pr0f
Fri Nov 22, 2019 8:25 pm
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 31
Views: 2792

Re: ICL OPD

As promised, attached is the latest version of the pdf with details of the keyboard, and some corrections and more details on earlier reverse engineering -enjoy :-)
by Pr0f
Fri Nov 22, 2019 10:10 am
Forum: Compatibles Corner
Topic: ICL OPD
Replies: 31
Views: 2792

Re: ICL OPD

I will post up some more updates this weekend - I have a keyboard map and a few other bits to upload.

Other projects and a 3d printer have taken my time at the moment, so work on the OPD => QLish device have stalled a little.
by Pr0f
Thu Nov 21, 2019 12:34 pm
Forum: For Sale
Topic: Intersting item on eBay
Replies: 7
Views: 251

Re: Intersting item on eBay

It does have a couple of mounting lugs on the 64 way edge connector - and room to get a flip over edge connector extender on there - so it would be possible to upgade this with a Trump / Gold / Super Gold probably...