Search found 2364 matches

by Chema
Sat Jan 05, 2019 7:37 pm
Forum: General Discussion
Topic: PC to Oric 3.5" floppy
Replies: 29
Views: 8498

Re: PC to Oric 3.5" floppy

I have an Amstrad CPC 664 which came with a bunch of 3 inch disks. Most of them are unreadable, some give random read errors... but I can format and copy new data and they work quite reliably.

Maybe time simply did its job and damaged the data on them... :?
by Chema
Fri Jan 04, 2019 11:57 pm
Forum: Tape and floppy disk converters
Topic: Track reading (Sedoric / FDC)
Replies: 51
Views: 31560

Re: Track reading (Sedoric / FDC)

No idea. But if you find any information regarding how information is stored in a Jasmin disk, please let me know :wink:
by Chema
Fri Jan 04, 2019 11:50 pm
Forum: General Discussion
Topic: Christmas Break
Replies: 8
Views: 760

Re: Christmas Break

Yeah, everything is solid as a rock :D
by Chema
Tue Jan 01, 2019 12:45 pm
Forum: General Discussion
Topic: Happy New Year 2019
Replies: 6
Views: 448

Re: Happy New Year 2019

Happy new year, people!
by Chema
Wed Dec 26, 2018 11:43 pm
Forum: Hardware hacks and extensions
Topic: re microdisc floppy controller board
Replies: 10
Views: 1443

Re: re microdisc floppy controller board

I have 2 3.5 floppy drives taken from a PC and I am using a flat cable. The only thing you need is setting one floppy as DS0, which will be drive A or 1 (by default PC's were configured as DS1 as they did not follow the Shuggart norm and they did not use the lines to select ds0-3). You can alter the...
by Chema
Wed Dec 26, 2018 12:46 pm
Forum: 6502 assembly coding
Topic: Substraction and Addition
Replies: 4
Views: 601

Re: Substraction and Addition

Subtraction in the 6502 always takes the carry into account, and it works the opposite as with addition. If the carry is clear, the sbc operation additionally subtracts 1. You need, then, to set it before the subtraction of the low byte and it will be cleared if the result decrement end past zero, s...
by Chema
Fri Dec 21, 2018 3:01 pm
Forum: General Discussion
Topic: Christmas Break
Replies: 8
Views: 760

Re: Christmas Break

Merry Christmas to everyone!!!!

Enjoy!
by Chema
Thu Dec 20, 2018 4:37 pm
Forum: General Discussion
Topic: Networking Orics.
Replies: 56
Views: 14776

Re: Networking Orics.

Yep.. quite similar to the info I posted about people using the ESP chip for adding Wi-Fi internet connection to some old computers. The chip includes a full TCP/IP stack implementation and is accessed through SPI. This needs a serial port in the computer, which is something the Oric lacks. But usin...
by Chema
Thu Dec 20, 2018 4:30 pm
Forum: Cross development tools
Topic: CC65 to DSK
Replies: 39
Views: 2591

Re: CC65 to DSK

Not sure if anything went wrong, but for AIC graphics I could only get decent results drawing things by hand. It is not really a graphic mode, so you need some experimentation to get nice results. I think it would be easier to develop the game (one phase, for instance) in black and white and then, o...
by Chema
Wed Dec 19, 2018 11:12 pm
Forum: Technical questions
Topic: Jasmin time
Replies: 4
Views: 667

Re: Jasmin time

@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 ...
by Chema
Wed Dec 19, 2018 6:49 pm
Forum: Technical questions
Topic: Jasmin time
Replies: 4
Views: 667

Jasmin time

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 som...
by Chema
Wed Dec 19, 2018 6:40 pm
Forum: General Discussion
Topic: Networking Orics.
Replies: 56
Views: 14776

Re: Networking Orics.

This is starting to get really exciting... and amazing :)
by Chema
Wed Dec 19, 2018 8:46 am
Forum: Cross development tools
Topic: CC65 to DSK
Replies: 39
Views: 2591

Re: CC65 to DSK

Oops... Sedoric is in the OSDK C library. You should look there for an implementation to use with another compiler.
by Chema
Wed Dec 19, 2018 8:45 am
Forum: Cross development tools
Topic: CC65 to DSK
Replies: 39
Views: 2591

Re: CC65 to DSK

I know. You can try the Sedoric() function, which is a hack, and tries ro execute a sedoric command such as "!LOAD ..." (I have no experience with this, but it was quite straightforward), or take a long path using custom routines to load sectors and create the disk so you know which sectors your dat...
by Chema
Tue Dec 18, 2018 6:22 pm
Forum: Cross development tools
Topic: CC65 to DSK
Replies: 39
Views: 2591

Re: CC65 to DSK

FloppyBuilder is intended for demos and specific games, such as my Blake's 7. It does not have a filesystem. I'd recommend using tap2dsk, as it builds a sedoric disk that can be opened, dir'd and copied with no problems. If you plan to access data I can provide some working routines and ideas, which...