Search found 1508 matches

by Symoon
Tue Mar 19, 2019 12:52 pm
Forum: Technical questions
Topic: Atmos ROM 1.1, 1st version (called 1.1a, checksum A65D6CED)
Replies: 3
Views: 78

Re: Atmos ROM 1.1, 1st version (called 1.1a, checksum A65D6CED)

iss wrote:
Tue Mar 19, 2019 8:56 am
You said this particular Oric is an Atmos, do you have more info about it like production date, serial number, etc.?
I can't tell you these details since I'm far away from it now, but I should check in 15 days. Just hoping I won't forget :lol:
by Symoon
Mon Mar 18, 2019 9:52 pm
Forum: Technical questions
Topic: Atmos ROM 1.1, 1st version (called 1.1a, checksum A65D6CED)
Replies: 3
Views: 78

Atmos ROM 1.1, 1st version (called 1.1a, checksum A65D6CED)

ISS, I think you were interested in this 1st Atmos ROM version, here it is, tape-saved from one of my Atmos. The checksum fits with the one at http://oric.free.fr/ROMS/romident.txt , called "A65D6CED Basic 1.1 original première mouture, appelé aussi Basic 1.1a". To me the two main (only?) difference...
by Symoon
Sun Mar 17, 2019 12:47 pm
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

Ok, after another evening/morning working at it, I realise there is no simplified way to be optimal with the dictionary: each attempt (tried about 8 of them) gave better results on several programs, and inferior results on other. None was "always better". The only solution IMHO would be to compute a...
by Symoon
Sat Mar 16, 2019 10:05 am
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

I tend to think we are close to perfection with your initial selection: frequency*gain (which means calculation for each dictionary entry), and with my final optimisation which is just sorting again by freqency the 14 selected items, avoiding this "do I switch my choice or not" step during the sele...
by Symoon
Sat Mar 16, 2019 1:54 am
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

After a rest, I'm back to this dictionary matter. Reading my existing code again, I see something interesting from my thoughts of 2 years ago. Once the code considers it has chosen rightly the 14 values to put in the dictionary (wrongly or not actually), it sorts them again in the dictionary to make...
by Symoon
Tue Mar 12, 2019 10:57 pm
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

The (now useless) ALC program is now detected and skipped by Novalight!

Seems like French editors (Cobra Soft, Loriciels, Infogrames) enjoyed modifying it to store a part of their protection; in such cases of course the modified ALC program is kept.
by Symoon
Mon Mar 11, 2019 10:31 pm
Forum: Technical questions
Topic: Oric Microdisc: Master/Slave selection
Replies: 9
Views: 261

Re: Oric Microdisc: Master/Slave selection

I checked my Jasmin drive: only got one set of 8 pins. And as for other drives, jumper on the left = drive A, sliding to the right gives B, C or D. About ISS files: they are CEO-Mag extracts. I suspect it would not hurt putting them online (especially if they already were online elsewhere!), but may...
by Symoon
Sun Mar 10, 2019 2:25 pm
Forum: Technical questions
Topic: Oric Microdisc: Master/Slave selection
Replies: 9
Views: 261

Re: Oric Microdisc: Master/Slave selection

There are no other details, so I'm wondering if the slave cables (which I don't have) have some magic cable twisting, or if we are supposed to play with jumper switches on the drives? I think you need to set the drives. I recall buying a second-hand stock, someone that had 3 or 4 drives for his tel...
by Symoon
Sun Mar 10, 2019 1:57 pm
Forum: Tape and floppy disk converters
Topic: Jasmin/FTDOS to Microdisc/Sedoric
Replies: 2
Views: 87

Re: Jasmin/FTDOS to Microdisc/Sedoric

If you still got a PC with a FDC, you can still try and read them with Readdsk. That seems like the most straightforward solution. I seem to recall there was a software to read disks from a system to another (someone showed this at a metting but I was busy discussing elsewhere), but I can't recall i...
by Symoon
Sun Mar 10, 2019 11:10 am
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

1st working tests with user memory relocation!
Sadly doesn't help Psychiatric loading - it was using page 1 but I suspect it uses specific loading routines or protection.

Anyway.
Now, removing ALC and optimizing dictionary. I think I need some holidays ;)
by Symoon
Sat Mar 09, 2019 8:42 pm
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

For the poll : If it's not too difficult - detect and discard it during WAV generation. Here is the quick disassembly of ALC. It intercepts the IRQ and clears the error flag - so not useful (especially) with Novalight I think. This leads to another question: would it be useful to have an option to ...
by Symoon
Sat Mar 09, 2019 9:14 am
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

Well, in fact what I have is the first Atmos ROM version, which does the right thing, and it is not bugged :) It checks for errors and stops loading if it finds them. What the Oric people did, after realizing that there were loading errors still, was to remove the error checking altogether in the s...
by Symoon
Fri Mar 08, 2019 1:27 pm
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

- try adding a memory relocation if a loading in page 1 is detected (actually, should I make it automatic of set up a user option to choose the memory page?) Well, thinking about it, I'll try to make it automatic, but also add a user option (that will have to indicate the memory page number to use)...
by Symoon
Fri Mar 08, 2019 6:07 am
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

Done! Successfully loaded 3D Fongus this morning. Still needs testing with all the options and ROM 1.0. But I'm glad I'm not using page 2 anymore, that's a relief and the loading penalty for this patch is only of 0.013 second. It also saves 8 more bytes for the stack. Novalight is now cut into 8 par...
by Symoon
Thu Mar 07, 2019 10:34 pm
Forum: Tape and floppy disk converters
Topic: Novalight - very fast tape loading
Replies: 67
Views: 2703

Re: Novalight - very fast tape loading

Currently working at heavily re-structuring Novalight so the dictionary is stored in page 1, with the code, thus improve compatibility.

Not there yet...
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