Search found 99 matches

by Euphoric
Sat Feb 04, 2006 3:49 pm
Forum: Operating systems, utilities and other serious software
Topic: Poll: Which is the storage system you do use ?
Replies: 17
Views: 46394

It would be nice also that you indicate what are the characteristics of your disc system (Jasmin 1 or 2, single head or double head, 3" or 3.5" or 5.25", number of drives you have, etc...) This is why I voted "other", because "Microdisc connected to a Telestrat" seemed to refer to a 3" drive, but I...
by Euphoric
Sat Feb 04, 2006 3:38 pm
Forum: Operating systems, utilities and other serious software
Topic: Stratsed/Sedoric differences ?
Replies: 4
Views: 16215

Now I have a question: How do I create a DSK file that is structured with 512 bytes sectors ? Good question ! :-) At that time, I was using real floppy disks formatted under Windows. The only thing I had to do in order to have a bootable disk was to copy the file to the disk and also to write the b...
by Euphoric
Fri Feb 03, 2006 4:34 pm
Forum: Technical questions
Topic: The FDC Floppy Disc Controller
Replies: 3
Views: 7403

Hi Jon, just to be picky... :wink: The disc drive may be one or two sides, some disc drives allow the second side to be read without having to flip the disc over (most 3.5" drives) but some do not (Most 3" drives). Better say "Floppy disks might be either single or double sided, and disc drives migh...
by Euphoric
Fri Feb 03, 2006 4:00 pm
Forum: Technical questions
Topic: Bigger capacity disc idea
Replies: 7
Views: 11521

Absolutely...
We have a CAV (Constant Angular Velocity) disk system, which means that we store the same number of bits, whatever the track is...
by Euphoric
Fri Feb 03, 2006 3:14 pm
Forum: Technical questions
Topic: Detecting Disk Drives, Disks, Disk Format and Disk System
Replies: 1
Views: 5015

There are surely several ways to detect all this. You may either use "high-level" ways (e.g detecting the presence of routines in page 4), or low-level ways (detecting first where the FDC controller is located in page 3). Same thing for the number of tracks/sector/sides: you could go "high-level", a...
by Euphoric
Fri Feb 03, 2006 2:19 pm
Forum: Technical questions
Topic: Detecting Operating System
Replies: 12
Views: 16058

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. lda $0324 cmp $0324 bne Telestrat This won't work, Jon. On the Oric-1/Atmos, reading location $0324 will indeed read timer1 of the first VIA: you will detect it decr...
by Euphoric
Fri Feb 03, 2006 2:03 pm
Forum: Operating systems, utilities and other serious software
Topic: Jasmin boot sequence and disc structure.
Replies: 6
Views: 15604

So, I guess it is possible to do a Jasmin and Microdisc compatible disc ? What about this structure: - Track 0/sector 1: a Jasmin bootsector - Track 0/sector 2: a Microdisc bootsector (BOOTUP.COM) - Track 0/sector 3: a fake Oric dos directory to run BOOTUP.COM The telestrat will work too with such ...
by Euphoric
Fri Feb 03, 2006 11:01 am
Forum: Operating systems, utilities and other serious software
Topic: DSK file format description
Replies: 4
Views: 13467

Fabrice will correct me if I'm wrong.
That's perfectly correct.

Simon said. :wink:
by Euphoric
Fri Feb 03, 2006 10:58 am
Forum: Operating systems, utilities and other serious software
Topic: Let's talk about a Mini-DOS
Replies: 6
Views: 16100

Well, in my idea it was not that is *has* to be MSDOS compatible, more that it has to be *able* to read and write MSDOS discs. That makes a lot of differences. In the same way, this system has to be able to read and write discs using other Oric DOS formats (Sedoric, XL-Dos, Randos, FT-Dos, ...). I ...
by Euphoric
Fri Feb 03, 2006 10:10 am
Forum: Operating systems, utilities and other serious software
Topic: Stratsed/Sedoric differences ?
Replies: 4
Views: 16215

Mhhh... all these questions about the differences between Jasmin, Microdisc, Telestrat disk boot process... Isn't it that you would like to have a "universal" disk that boots on the Jasmin, the Microdisc, and the Telestrat ? In this case, you could start from my Fantasmagoric boot sector, this is ex...
by Euphoric
Thu Feb 02, 2006 11:33 am
Forum: Operating systems, utilities and other serious software
Topic: Jasmin boot sequence and disc structure.
Replies: 6
Views: 15604

Both the microdisc controller and the jasmin controller have electronics to control the MAP and ROMDIS signals on the expansion port. This allows them to switch between the BASIC rom, the overlay ram, and an eprom that reads the OS from the floppy disk. As you said, a difference between the microdis...
by Euphoric
Thu Feb 02, 2006 11:21 am
Forum: Operating systems, utilities and other serious software
Topic: Let's talk about a Mini-DOS
Replies: 6
Views: 16100

Obviously, building a new (even mini-) OS is a big task. So I would suggest it should not only ease the task of developing demoes/games/applications, but also improve the transfers between the Oric and the other main platforms. This said, there's not much choice. Even if the MSDOS format is not the ...
by Euphoric
Thu Feb 02, 2006 10:48 am
Forum: Tape and floppy disk converters
Topic: WAV2WAV ?
Replies: 11
Views: 20319

Hello again, Simon, could you please try and tell us if the very basic speed conversion done by Windows' recorder produces a 11 kHz file that you can load on the real Oric ? Maybe Cool Edit does a too much sophisticated job on this conversion ?

Cheers,

Fabrice
by Euphoric
Sun Jan 29, 2006 5:38 pm
Forum: Tape and floppy disk converters
Topic: WAV2WAV ?
Replies: 11
Views: 20319

Hello Simon, I understand that if you ask for such a tool, it's because you must have a lot of hardware tapes than cannot be converted to .tap images... But, before I write such a converter (not very difficult), have you tried one of the numerous wave tools available for windows ? (I seems to me tha...
by Euphoric
Thu Jan 26, 2006 6:58 pm
Forum: Operating systems, utilities and other serious software
Topic: Contiki on Oric Atmos?
Replies: 13
Views: 26387

>All 48K Orics actually have 64K of ram, the ram at addresses >C000-FFFF is called "overlay ram" and can only be accessed >when disabling the rom externally (from an add-on on the >expansion port, like the disk controller). >But most disk operating systems load their code in this overlay >ram... Hi...