Search found 78 matches

by christian
Mon Dec 02, 2019 11:47 am
Forum: Technical questions
Topic: Atmos/Microdisk - ghost in the machine!?!?!?
Replies: 19
Views: 326

Re: Atmos/Microdisk - ghost in the machine!?!?!?

<r>I think the FDC should be a WD1793, not a MB8877.<br/> They are "firmware compatible" but not "pin compatible"<br/> <br/> Here is the datasheet: <URL url="http://bitsavers.org/components/westernDigital/FD179X-02_Data_Sheet_May1980.pdf"><s>[url]</s><LINK_TEXT text="http://bitsavers.org/components/...
by christian
Sun Nov 24, 2019 6:41 pm
Forum: Emulators
Topic: Oricutron 1.0 (EDIT: Now 1.2)
Replies: 167
Views: 110609

Re: Oricutron 1.0 (EDIT: Now 1.2)

I just made a PR on Github with the patch to add the support of the WRITE TRACK command.
by christian
Tue Nov 19, 2019 5:28 pm
Forum: Emulators
Topic: Oricutron 1.0 (EDIT: Now 1.2)
Replies: 167
Views: 110609

Re: Oricutron 1.0 (EDIT: Now 1.2)

I found my quick and dirty patch, it works with Ftdos and Sedoric.

I still have to add some checks to avoid having buffer overflow (when trying to format an image with more tracks than the image file)
Also the header of the disk image isn't modified...
by christian
Mon Nov 18, 2019 10:11 pm
Forum: Emulators
Topic: Oricutron 1.0 (EDIT: Now 1.2)
Replies: 167
Views: 110609

Re: Oricutron 1.0 (EDIT: Now 1.2)

I wrote a patch some time ago to support the WRITE TRACK command but I have never published.
I needed it for a program that formatted its data diskettes (can't remember its name)

If I remember correctly, my modification works but the delay before the IRQ interrupt may not be accurate.
by christian
Tue Nov 05, 2019 7:01 pm
Forum: General Discussion
Topic: Connectivity problems (again)
Replies: 43
Views: 3476

Re: Connectivity problems (again)

There is something really weird, the home page says I'm the only registered visitor with more than 200 guests If I go to a random discussion, I'm with at least 10 guests (even in a post from 2006!) and the response time is very high. Can you check the log files of Apache and see if some IP addresses...
by christian
Sat Sep 14, 2019 8:56 am
Forum: BASIC programming
Topic: cataloguing tapes
Replies: 24
Views: 2999

Re: cataloguing tapes

The default start address for the .text segment is $1000.
So, the program is assembled at $1000, and BNE $9730 is out of range.

You must set the start address with the -bt option: xa isscat.txt -o isscat.s -e errorlog.txt -bt 38656

Note: 38656 = $9700
by christian
Sat Sep 07, 2019 7:27 pm
Forum: Emulators
Topic: Oricutron 1.0 (EDIT: Now 1.2)
Replies: 167
Views: 110609

Re: Oricutron 1.0 (EDIT: Now 1.2)

@chema, @iss: regarding the issue with The Quill, I think i found a way. After loading quill.tap: disable the option "Turbo Tape" in the hardware menu select "Save tape output" and set a file name go back to the quill and save your datas (you can save many times) go to Oricutron menu and select "Sto...
by christian
Thu Sep 05, 2019 2:55 pm
Forum: Emulators
Topic: Oricutron disks and tapes
Replies: 14
Views: 1166

Re: Oricutron disks and tapes

The fix was accepted and merged in the repository yesterday.
by christian
Wed Sep 04, 2019 10:10 am
Forum: Emulators
Topic: Oricutron disks and tapes
Replies: 14
Views: 1166

Re: Oricutron disks and tapes

Pull Request submitted, waiting for review
by christian
Mon Sep 02, 2019 9:29 pm
Forum: Emulators
Topic: Oricutron disks and tapes
Replies: 14
Views: 1166

Re: Oricutron disks and tapes

Yes, I think.
I will submit a Pull Request with the fix on Github.
by christian
Mon Sep 02, 2019 10:20 am
Forum: Emulators
Topic: Oricutron disks and tapes
Replies: 14
Views: 1166

Re: Oricutron disks and tapes

It's a bug. When you use a disk (Microdisk, Jasmin, ...) with Oricutron, CSAVE and CLOAD don't work. It was first reported by Kiwilevrai on http://forums.oric.org/ and I opened an issue on Github some time ago https://github.com/pete-gordon/oricutron/issues/115 I found the solution but I forgot to d...
by christian
Tue Aug 27, 2019 8:52 pm
Forum: BASIC programming
Topic: Basic TAP file format
Replies: 4
Views: 749

Re: Basic TAP file format

Good news.

You're right, the header use MSB and the ROM saves BASIC programs with one more byte than necessary ($0b i, my previous post).
So the end address in the header need also to be one more than the real end of BASIC program in memory.
You can add an arbitrary byte.
by christian
Mon Aug 26, 2019 9:34 pm
Forum: BASIC programming
Topic: Basic TAP file format
Replies: 4
Views: 749

Re: Basic TAP file format

Hi, Basic: 10 REM LIGNE 10 20 PRINT "TEST" Tokenized lines: +-----+----> Address for next line ($0510) | | +----+----> Line number (10) | | | | +----> Token for REM | | | | | +------------------------+----> LIGNE 10 | | | | | | | +----> End Of Line 00000501 10 05 0a 00 9d 20 4c 49 47 4e 45 20 31 30 ...
by christian
Sun May 12, 2019 10:19 am
Forum: Emulators
Topic: Oricutron and illegal opcode 80
Replies: 35
Views: 5408

Re: Oricutron and illegal opcode 80

Steve M wrote:Something I noticed was if you load a disk you can't then load a tape.
I opened an issue about it some time ago and I solved the problem, but never sent the Pull Request :oops:
by christian
Fri May 10, 2019 5:46 pm
Forum: Emulators
Topic: Oricutron and illegal opcode 80
Replies: 35
Views: 5408

Re: Oricutron and illegal opcode 80

@Symoon: since there is no new binary release in the Github repository, you have to download the sources and compile on your PC.
An other possibility is to download the developer builds from iss's web site here

I can make the binary but only for Linux targets.