Search found 127 matches

by carlsson
Thu Feb 04, 2010 1:14 pm
Forum: Mags and books
Topic: Some books doc not available here are available there
Replies: 6
Views: 16230

Your 13 year old self probably would turn to Google Translate if it had existed at that time.
by carlsson
Tue Feb 02, 2010 1:03 pm
Forum: General Discussion
Topic: Vintage Computer Festival - a potential Oric exhibition
Replies: 1
Views: 5272

Heh. Someone on almost every forum I visit keep mentioning the VCF GB, and we're several people from abroad looking to get there. I haven't checked if they have a max visitors capacity and how many UK people may have to fight with foreigners for tickets. I saw the Beeb people are surely to get repre...
by carlsson
Tue Jan 19, 2010 3:03 pm
Forum: Games
Topic: 1337: Contest for musicians out there!
Replies: 9
Views: 13730

Are you only interested in original tunes or will covers also do?
by carlsson
Wed Dec 16, 2009 2:50 pm
Forum: C programming
Topic: Nice little Mandelbrot (ASCII Art)
Replies: 9
Views: 20809

Yowsa, that is not the kind of C teached in schoolbooks. While in no way obfuscated, it utilizes the loop constructs quite a lot.
by carlsson
Tue Dec 08, 2009 1:15 pm
Forum: General Discussion
Topic: Telestrat / AdressTel on ebay
Replies: 1
Views: 5145

Hm, didn't the last Telestrat end around 700-800 Euros? Oh well, it never hurts to try, someone may want it enough to pay any price.

Aha, it is a custom built machine. Were those familiar (in France) and would command such a price?
by carlsson
Tue Dec 08, 2009 1:12 pm
Forum: Audio tools
Topic: WAVE to you all
Replies: 60
Views: 99008

It seems the Commodore chips are the odd beasts in this way: Low value = low frequency VIC-I (VIC-20), SID (C64/128), TED (C16 and Plus/4) Low value = high frequency AY, SN and POKEY (Atari) See for example this document on basic POKEY programming: http://www.atariarchives.org/mmm/timers.php In prac...
by carlsson
Fri Dec 04, 2009 8:31 pm
Forum: Audio tools
Topic: WAVE to you all
Replies: 60
Views: 99008

I can't speak for the AY and SN chips, but I'm absolutely sure $0001 makes SID produce its lowest frequency and $xFFF (can't remember the value of x) makes a very high pitched sound. Perhaps you're thinking about the actual frequency of a note which works like you describe: at 50 Hz you get a very l...
by carlsson
Fri Dec 04, 2009 1:09 pm
Forum: Audio tools
Topic: WAVE to you all
Replies: 60
Views: 99008

The sound chip would need to be tuned to some tempered scale to compensate for this, e.g. if there were exactly six steps between each half note, each octave would be 72 steps out of 256 possible. It would offer a range of 3.5 octaves. Fewer steps between each note would offer a wider range if the ...
by carlsson
Fri Dec 04, 2009 12:47 pm
Forum: General Discussion
Topic: Finnish Oric 1 add
Replies: 1
Views: 4861

I have found Google Translate doing a pretty good job on foreign languages. Much better than I first anticipated, in particular with such a complicated language as Finnish where each word is mended with cases, genes, tempus, articles and everything else you would find separately in other languages. ...
by carlsson
Thu Nov 26, 2009 12:07 pm
Forum: Audio tools
Topic: WAVE to you all
Replies: 60
Views: 99008

Well, the formula for calculating a note frequency in Hz works in a similar way, just inverse math: A1 = 110 Hz, A2 = 220 Hz, A3 = 440 Hz, A4 = 880 Hz and so on. In a matter of seconds we realize a glissando from A1 to A2 has a range of 110 Hz while a glissando from A4 to A3 is 440 Hz long. The soun...
by carlsson
Sun Oct 25, 2009 5:04 pm
Forum: Technical questions
Topic: Keyboard partial failure
Replies: 23
Views: 36025

Today I had a reason to test my both Oric-1's. At first I tried the one that was known to fully work but which had problems outputting colour due to a bad RF modulator. It turns out to produce quite a decent colour picture even if there is quite a lot of pixel creep on the display. Well, after a whi...
by carlsson
Wed Oct 21, 2009 4:05 pm
Forum: Games
Topic: Impossible Mission
Replies: 147
Views: 219573

Loader music? As far as I know, the original game has no title screen music, much less ingame music. I understand if you want to add some, I am a computer musician myself, but if memory is limited it would seem unfortunate if speech or some features were sacrificed to fit a bit of music. 8)
by carlsson
Mon Oct 19, 2009 10:14 am
Forum: Hardware hacks and extensions
Topic: EEPROM (or flash) replacement for Oric-1 ROM?
Replies: 13
Views: 29971

I'm not too familiar with those, but I believe the smallest Flash you can get would be a 29F256, i.e. 32K device in a 28-pin DIP. There seems to exist a 29C256 too, but the datasheets only mention TSOP and PLCC packages although some places are selling them in DIP packages too. 29F256 27128 ________...
by carlsson
Fri Oct 09, 2009 2:05 pm
Forum: General Discussion
Topic: Yeah !
Replies: 2
Views: 5201

What is the next goal, 4711 messages?
by carlsson
Mon Oct 05, 2009 2:25 pm
Forum: Games
Topic: Stardom for our authors ? :-)
Replies: 6
Views: 10754

I'm sure someone like Kenz at Psytronik would be thrilled to publish some Oric games. You would have to work out the details regarding free vs commercial distribution, but I've found today a commercial retro game gets way more attention than a freely downloadable one.