Search found 127 matches
- 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
- 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...
- Tue Jan 19, 2010 3:03 pm
- Forum: Games
- Topic: 1337: Contest for musicians out there!
- Replies: 9
- Views: 13730
- Wed Dec 16, 2009 2:50 pm
- Forum: C programming
- Topic: Nice little Mandelbrot (ASCII Art)
- Replies: 9
- Views: 20809
- Tue Dec 08, 2009 1:15 pm
- Forum: General Discussion
- Topic: Telestrat / AdressTel on ebay
- Replies: 1
- Views: 5145
- 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...
- 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...
- 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 ...
- 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. ...
- 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...
- 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...
- Wed Oct 21, 2009 4:05 pm
- Forum: Games
- Topic: Impossible Mission
- Replies: 147
- Views: 219573
- 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 ________...
- Fri Oct 09, 2009 2:05 pm
- Forum: General Discussion
- Topic: Yeah !
- Replies: 2
- Views: 5201
- Mon Oct 05, 2009 2:25 pm
- Forum: Games
- Topic: Stardom for our authors ? :-)
- Replies: 6
- Views: 10754