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Jasmin time

Posted: Wed Dec 19, 2018 6:49 pm
by Chema
Hi everyone!

A friend of mine got his hands on a Jasmin disk interface and has been playing with it.

First the bad news. Blake's 7 is not working. It does on the emulator (both Euphoric and Oricutron, that is), but does not pass beyond the 'BOOTING TDOS' (was that it?) message. I have to ask for some testing to see if I can figure out where it gets stuck, but I'd bet the booting sector routines work, but not the ones in the game (from floppy builder) don't. I thought they were equivalent, but the tricks to make them compatible with Jasmin and Microdisk may be failing at some point. I need to have a look.

Second thing is a question... does anybody know a way to transfer SEDORIC or ORICDOS disks or disk images to use with a Jasmin? There are utilities for creating game compilation disks, but all of them use the SEDORIC disk format, which is not readable by TDOS. Is there an easy way to create a JASMIN disk or disk image? I declare my completely lack of any knowledge about this system.

Re: Jasmin time

Posted: Wed Dec 19, 2018 8:53 pm
by Dbug
I'm not a Jasmin expert at all, never actually used one, sorry!

Re: Jasmin time

Posted: Wed Dec 19, 2018 9:36 pm
by iss
@Chema: I didn't looked at your last modifications in FloppyBuilder, but from your explanation I suspect where can be the problem. Can you try the attached image with the real Jasmin? It should work with Microdisk too and contains some read tests and a write test after them.
Else unfortunately, I don't have Jasmin hardware and I'm not familiar with it at all. But I know for sure that jorodr has one and I can borrow it for test.

Re: Jasmin time

Posted: Wed Dec 19, 2018 9:39 pm
by romualdl
Hi there,

Have 1 ou 2 Jasmin 2 here, had used them to dump some Oric Jasmin disk to the PC -how I don't remember) but never used them the other way if I remember well (it was looonnnng ago).

Re: Jasmin time

Posted: Wed Dec 19, 2018 11:12 pm
by Chema
iss wrote:
Wed Dec 19, 2018 9:36 pm
@Chema: I didn't looked at your last modifications in FloppyBuilder, but from your explanation I suspect where can be the problem. Can you try the attached image with the real Jasmin? It should work with Microdisk too and contains some read tests and a write test after them.
Else unfortunately, I don't have Jasmin hardware and I'm not familiar with it at all. But I know for sure that jorodr has one and I can borrow it for test.
I will ask my friend to test it whenever he has time, but I would really appreciate any clue about where the problem is. The code I use not only works on real Microdisc and emulated Jasmin, but also avoids the Telestrat bug, which is the trickiest part. It may add some cycles, so there might be some timing issues which affect only the Jasmin... don't know.