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One way to detect The Telestrat is to detect the second VIA by sampling the counter of timer1 two times and looking for a difference.

The FUNCT key is found on the Atmos and Telestrat computers. In both manuals, their is no mention of how to read it, but it is quite simple. In fact, the clever boys at Oric decided to make it behave like a shift key, so instead of providing 101 function keys, they provided a single Function key tha...

How do we detect whether the currently running application is on an Oric1, Oric Atmos or Oric Telestrat?

Their have been a few Joystick interfaces over the years, but automatically detecting their presence has never been done and has been left to the user to decide what joystick interface is plugged in. This is not a problem but it would be neat if the system could autodetect the following joystick int...

The latter 3 are possibly easier and the last must be detected first in order for the previous to be tested for. How do we detect the Disk Drive and DOS? How do we detect the number of Disc Drives? How do we detect the presence of disks in an attached drive? How do we detect the Disk Format and numb...

Working on the fact that a disc is composed of concentric rings, where the distance on the outer ring is much greater than the distance on the inner, I wonder if it is possible to format each Track with an increasing number of sectors per track (as the head moves towards the edge of the disc)? Secto...

The following code has been simplified in that it does not currently detect errors and therefore no retries are performed if a byte is read incorrectly. ;FDC Addresses #define fdc_command $310 #define fdc_status $0310 #define fdc_track $311 #define fdc_sector $312 #define fdc_data $313 #define fdc_i...

Apologies Fabrice, the values where very much guessed (They were given more as an example than proven values). Suffice to say i have corrected the passage at the top.

What you say may be possible, but at 2 bit, one bit would be tied up as a polarity so effectively giving one bit step value, which is a bit small ;) Also, playing 2 bit samples is slow because of the additional extract code (to get 2 bits from the 8 bit source) and the conversion code(to get 0-15 fr...

This subject was replied to in an email Fabrice Frances sent me a while ago. In theory it should work, but please be aware of the large timings associated with floppy disks: if you wait for the music player interrupt (polling it), service it and then issue a fdc command, it will work if the fdc com...

The FDC or Floppy Disc Controller handles the mechanics and transfer of bytes to and from (up to 4) disc drives. The Disk is a relatively large storage medium, many times the memory capacity of the Oric, therefore a scheme is used to allow easy mapping of the disc surface and selecting the drive. Fl...

Mused
Mused was the first music editor i ever wrote. Written almost completely in BASIC, it allowed a 3 channel single sequence song to be created.

Sonix was a series of Chip and Sample Trackers. All were based on Events,Patterns, Ornaments(Pitch Effect) and Volume Sequences (3.40 & 3.42 referred to them as Samples) framework. Sonix 2.00 SoundTracker 3 Channel Sample Tracker which u can get here... http://twilighte.oric.org/twinew/oricsoft/...

2 Bit Samples refer to the source rather than the output. 2Bit samples have the clear advantage of being very memory efficient, since 4 sample values can be stored in every byte. However, 2 bit samples suffer from low resolution having only 4 possible values. The classic Rambo and Madonna samples us...

The process of Playing a 4 Bit sample is alot easier than an 8 or 2 bit since this is what the AY-3-8912 can handle. The problem is in deciding the format of the source byte. The Source byte is 8 bits, which may potentially store two 4 bit sample values. Their are 4 formats possible. Format 1: 4BIT ...