Search found 81 matches

by christian
Fri Jan 17, 2020 10:41 am
Forum: Emulators
Topic: Clock Signal — an Oric emulator for macOS and Linux
Replies: 97
Views: 54317

Re: Clock Signal — an Oric emulator for macOS and Linux

actually, follow-up query on the Jasmin: if you can select arbitrarily many then how do you deselect drives?
Drive 0 -> 0x3FC, Drive 1->0x3FD, Drive 2->0x3FE, Drive 3->0x3FF
To select a drive write 1 to the corresponding address and 0 to deselect.
by christian
Fri Jan 10, 2020 12:04 pm
Forum: Technical questions
Topic: Jasmin time
Replies: 24
Views: 3163

Re: Jasmin time

I do not remember ever having encountered this problem with my Jasmin.
Do you have the same problem within other address ranges?
by christian
Wed Dec 11, 2019 6:37 pm
Forum: Painting tricks
Topic: A little sprite-demo (textmode)
Replies: 27
Views: 28236

Re: A little sprite-demo (textmode)

Works with Oricutron too
by christian
Mon Dec 02, 2019 11:47 am
Forum: Technical questions
Topic: Atmos/Microdisk - ghost in the machine!?!?!?
Replies: 28
Views: 1922

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: 169
Views: 114745

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: 169
Views: 114745

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: 169
Views: 114745

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: 47
Views: 5094

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: 4107

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: 169
Views: 114745

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: 1649

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: 1649

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: 1649

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: 1649

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: 1050

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.