Search found 272 matches
- Tue Jul 23, 2019 1:12 am
- Forum: Technical questions
- Topic: A possible software alternative to Vsync?
- Replies: 47
- Views: 56531
Re: A possible software alternative to Vsync?
To get a timer at 50Hz you would start by loading the latch in Timer 1 whit 20000 cycles. In free-run mode, this will create an IRQ each time the counter reaches zero, while the counter re-loads with the latch value automatically. However, if you have a look at the specs (http://archive.worldofdrag...
- Fri Jul 19, 2019 2:27 am
- Forum: Technical questions
- Topic: A possible software alternative to Vsync?
- Replies: 47
- Views: 56531
Re: A possible software alternative to Vsync?
I tested the routine in my real Oric. A very limited test, however. The cursor in Blake's 7 flickered when being moved so I put the routine in my code trying to get a sync with the vertical retrace and avoid it. It worked, but only partially. [...] Now, I don't know why 19966. There are 33 cycles m...
- Tue Jul 16, 2019 5:53 am
- Forum: Cross development tools
- Topic: OSDK 1.14
- Replies: 9
- Views: 11782
Re: OSDK 1.14
And of course, a few days after writing this I find a bug. ![Wink ;)](./images/smilies/icon_wink.gif)
Submitted on the OSDK bug report form.
(Thankfully, commenting/adding some lines randomly seems to remove it so I can still code!)
![Wink ;)](./images/smilies/icon_wink.gif)
Submitted on the OSDK bug report form.
(Thankfully, commenting/adding some lines randomly seems to remove it so I can still code!)
- Tue Jul 16, 2019 5:51 am
- Forum: Games
- Topic: Small game: Robot
- Replies: 5
- Views: 5713
Re: Small game: Robot
Interesting, this seems to be the kind of game I was programming when I was coding in BASIC on the 8 bit Thomson machines (MO5, TO7/70, TO9, etc.) in the 80s. ;) I only had the chance to work a few hours in total with Oric machines back then (Oric 1) and I only remember writing a mini racing game wi...
- Tue Jul 16, 2019 5:28 am
- Forum: Technical questions
- Topic: A possible software alternative to Vsync?
- Replies: 47
- Views: 56531
Re: A possible software alternative to Vsync?
I must admit I am still wrapping my head around this method but I will get to it eventually... :lol: In the meantime here are a few additional questions about it: has anyone validated that it works on a real Oric? And by this I mean: have you been able to place the CIA interrupt anywhere you want du...
- Tue Jul 16, 2019 2:43 am
- Forum: Cross development tools
- Topic: OSDK : how to build it?
- Replies: 2
- Views: 6104
Re: OSDK : how to build it?
Thanks!
- Wed Jul 10, 2019 2:35 am
- Forum: Cross development tools
- Topic: OSDK 1.14
- Replies: 9
- Views: 11782
Re: OSDK 1.14
(From http://forum.defence-force.org/viewtopic.php?f=23&t=1976): Retroric found that there was a bug in the OSDK 1.14 when using -O3, so if you were planning to code anything, either force -O2 or use the OSDK 1.13 instead. What does that bug consist of and how is it triggered? The added oomph br...
- Wed Jul 10, 2019 2:27 am
- Forum: Technical questions
- Topic: Atmos keyboard with 15 pin connector?
- Replies: 4
- Views: 6548
Re: Atmos keyboard with 15 pin connector?
Most likely the reason is one of cost and/or availability, depending on supply conditions, only 15 pin headers may have been available or they may even have been cheaper than the 14 ones. In that case, Tangerine may have accommodated the design of the board to support both so they could order whiche...
- Wed Jul 10, 2019 2:19 am
- Forum: General Discussion
- Topic: Alchimie 13 demoparty, Nov. 1-3, Tain l'Hermitage (France)
- Replies: 4
- Views: 6144
Re: Alchimie 13 demoparty, Nov. 1-3, Tain l'Hermitage (France)
Simple but nice effect in the intro!
I like how it is sometimes possible to make Oric screens modern despite the machine's limitations.![Smile :)](./images/smilies/icon_smile.gif)
But we need to work on your vertical scrolling routine, this can be improved.![Wink ;)](./images/smilies/icon_wink.gif)
I like how it is sometimes possible to make Oric screens modern despite the machine's limitations.
![Smile :)](./images/smilies/icon_smile.gif)
But we need to work on your vertical scrolling routine, this can be improved.
![Wink ;)](./images/smilies/icon_wink.gif)
- Wed Jul 10, 2019 2:09 am
- Forum: Technical questions
- Topic: Telestrat failure?
- Replies: 32
- Views: 25684
Re: Telestrat failure?
Depends. Mask ROMs are extremely reliable Very true, and the clue is in the name. Unlike UVEPROMS, Flash-ROMS (analogue storage, see above), Mask ROMS are not programmed as such, but the data is put there at time of manufacturer by including, or not including, metal/silicon bits of the chip design ...
- Wed Jul 10, 2019 2:04 am
- Forum: Tape and floppy disk converters
- Topic: Novalight - very fast tape loading
- Replies: 122
- Views: 104693
Re: Novalight - very fast tape loading
Well I was describing what I'm doing with Oricutrion, which helps a lot: executing my new code step by step while it reads the WAV file I just produced with a beta version of Novalight. The code can be wrong, but the WAV file too (I'm sometimes changing the signal). I can't see how to do on real ha...
- Wed Jul 10, 2019 2:00 am
- Forum: Cross development tools
- Topic: OSDK : how to build it?
- Replies: 2
- Views: 6104
OSDK : how to build it?
Hello kitties, this may sound like a completely dumb question but after modifying the OSDK 1.14 to support paths (for the OSDK and source programs) with spaces in their names (for folders and files), I wanted to build a packaged version of the OSDK from Windows and ... realized that I had no idea ho...
- Wed Jul 10, 2019 12:29 am
- Forum: Cross development tools
- Topic: OSDK 1.14
- Replies: 9
- Views: 11782
Re: OSDK 1.14
Great, thanks!
Now using it as my official version (after several months off the Oric!).
Now using it as my official version (after several months off the Oric!).
- Tue Jun 18, 2019 1:37 pm
- Forum: Technical questions
- Topic: Telestrat failure?
- Replies: 32
- Views: 25684
Re: Telestrat failure?
Also UV-EPROMS (the ones with windows on) have varying voltage requirements. Not all programmers meet the spec and so the chip may not be fully programmed, which can lead to early failure. The data stored isn't digital/binary after all, but a level of analogue charge. It's only rendered binary by a...
- Tue Jun 18, 2019 1:29 pm
- Forum: Emulators
- Topic: Oricutron macOS 10.14: Unable to open roms
- Replies: 8
- Views: 11491
Re: Oricutron macOS 10.14: Unable to open roms
If you didn't already take a look in the Oricutron's Makefile at 'package-osx:' receipt. There are some tricks with symlinks. Else for my builds I'm using a cross environment under Linux which does the job perfectly, but its setup is complex too. One of the goals of my builds is to avoid as much as...