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Search found 1297 matches

by tofro
Fri Feb 23, 2018 11:26 pm
Forum: Hardware
Topic: Troubleshooting black display?
Replies: 6
Views: 198

Re: Troubleshooting black display?

If it's completely working otherwise, it is very likely that the computer is actually producing a video signal, but the HDMI converter cannot make heads or tails of it - Or the TV doesn't know what to do with a somewhat distorted HDMI signal. I have recently tested my HDMI-converted QL (similar setu...
by tofro
Fri Feb 23, 2018 10:01 am
Forum: Help for New Users
Topic: Useful inspections (capacitors a. o. things) before using a QL?
Replies: 11
Views: 412

Re: Useful inspections (capacitors a. o. things) before using a QL?

Actually, Sinclair Spectrums are quite well-known for developing problems caused by bad caps in a critical area, the +/- 12V supply of the RAM. Due to a kind of adventurous but money-saving design of that circuitry, failing caps (or other failing components) have a high probability of completely des...
by tofro
Thu Feb 22, 2018 9:39 pm
Forum: Help for New Users
Topic: Useful inspections (capacitors a. o. things) before using a QL?
Replies: 11
Views: 412

Re: Useful inspections (capacitors a. o. things) before using a QL?

I have actually never had a failed capacitor ever in a QL (now that I said that, I'll probably have one tomorrow...) The keyboard membrane is very likely to be toast if it has never been replaced before. Beyond that, Microdrive cleaning, re-seating chips in sockets, checking the expansion connector ...
by tofro
Thu Feb 22, 2018 11:04 am
Forum: Software & Programming
Topic: Tridim - the 3D modelling program
Replies: 38
Views: 611

Re: Tridim - the 3D modelling program

Turbo is probably very close to SupecrCharge when it is creating threaded code , which is more a list of to-be-called subroutines than machine code - Turbo has the additional option to optimize for speed ("FAST") which is in the manuals described as "assembles 680008 machine code"...
by tofro
Wed Feb 21, 2018 11:39 am
Forum: Hardware
Topic: Keyboard membrane connectors.
Replies: 4
Views: 249

Re: Keyboard membrane connectors.

I also ordered some from the exact same source in Poland together with some other stuff I needed (the 9-pin type was only available with angled pins at that moment, which doesn't really matter for the QL as you can easily bend these straight). They're cheap, fit well, ordering was easy and shipping ...
by tofro
Mon Feb 19, 2018 1:48 pm
Forum: General QL Chat
Topic: Online Chat Event: Saturday, 8pm!
Replies: 8
Views: 399

Re: Online Chat Event: Saturday, 8pm!

In short: Not yet, Kameraden, not yet!

The Saturday following the Sunday that Dave announced this is the 24th.

Tobias
by tofro
Sun Feb 18, 2018 10:21 am
Forum: Software & Programming
Topic: Graphic drawing Qemulator/QPC2
Replies: 10
Views: 452

Re: Graphic drawing Qemulator/QPC2

Martin, The original QL generated slightly rectangular pixels, while all emulators need to live with square pixels on modern monitors. That means, you either need to live with distorted squares and circles when you do a pixel-exact emulation, or you change the aspect ratio of the graphics- to pixel ...
by tofro
Sun Feb 18, 2018 9:39 am
Forum: Software & Programming
Topic: SD_SETPA failes on SMSQ with Invalid Parameter
Replies: 10
Views: 368

Re: SD_SETPA failes on SMSQ with Invalid Parameter

Norman, I suppose it doesn't help if I'll tell you "this should work".... What could upset the QL, however, is your "new way of formatting source code". I would suppose there's something ending up on an odd address. Note byte: dc.b 42 word: dc.w 4711 and byte: dc.b 42 word: dc.w ...
by tofro
Fri Feb 16, 2018 2:08 pm
Forum: Software & Programming
Topic: A6 and the CALL command
Replies: 8
Views: 339

Re: A6 and the CALL command

Is a6 cached in the job header at start? If so, you could either load it from there before ending your routine, there would be no need to stack it then either. In QDOS, this doesn't help. a6 can change between any two instructions (Even worse, QDOS might assume SuperBASIC is where you make a6 point...
by tofro
Fri Feb 16, 2018 12:14 pm
Forum: Software & Programming
Topic: A6 and the CALL command
Replies: 8
Views: 339

Re: A6 and the CALL command

My first answer applied to SMSQ/E, sorry for not pointing this out. Note that, under SMSQ/E, the SBasic area doesn't move. If you write an extension, references thus needn't be relative to A6 during the entire processing. However, doing so will make your extension incompatible with QDOS. I think thi...

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