Search found 3799 matches

by Dbug
Fri Dec 03, 2021 9:33 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

Something like this was built in the GDR era. In German, however. http://robotron.webhop.net/files/kc/MIDI-rfe11_88.pdf With the 1.77 MHz of the KC there were timing problems, so you can use another method, state-oriented programming. For the C64, i.e. 6502 CPU, the SIO 6850 was used. Probably simi...
by Dbug
Wed Dec 01, 2021 6:49 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

Well, not sure if my first attempt is correct, at least when it's connected I can type with the keyboard and play sounds, so it looks like there's nothing interfering with the normal operation of the machine. Just tried LPRINT"A"; to see, and the machine froze (probably waiting for ACK). Not sure my...
by Dbug
Tue Nov 30, 2021 7:06 pm
Forum: Audio tools
Topic: Little sound fx generator
Replies: 18
Views: 6570

Re: Little sound fx generator

I was looking for a way to make some sounds for Encounter, and decided to give a shot at the SNDFX Gen program. It has all the bases for something nice, but I think handling envelope differently would provide much larger possibilities :D Let me explain: The YM chip enveloppes are very basic, there i...
by Dbug
Mon Nov 29, 2021 2:23 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

I'm not very good at anything involving the VIA, and I/O in general, I guess for that to work we probably need some delay loops, make sure IRQ are disabled while playing with the VIA/YM input output registers, and probably have to change the direction from write to read all the time, so we can send ...
by Dbug
Mon Nov 29, 2021 2:00 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

The 2x4 is in fact supported by this very driver, so .. not to worry. Just search for PCP2x4 and you'll see the things you need. Seems to be a very easy interface to use, could probably even use some of this C code directly on the Oric .. Yes, that's my point: The interface I got is not a 2x4, it o...
by Dbug
Mon Nov 29, 2021 1:40 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

Nice idea! The linux driver for the Portman interface can probably be referenced for details on the protocol, no need to dig further: https://github.com/torvalds/linux/blob/master/sound/drivers/portman2x4.c I did see that one, probably a good base, that being said I would not be 100% confident that...
by Dbug
Mon Nov 29, 2021 9:53 am
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Re: Parallel port MIDI interface

I do have plenty of midi stuff here, including a midi interface on the PC, and code to listen to all the midi traffic, so that's not really a problem. I guess the first step is to make a cable, I doubt I have a DB-25 male connector lying around, so I'll have to order one. Here are some other photos,...
by Dbug
Sun Nov 28, 2021 6:58 pm
Forum: Hardware hacks and extensions
Topic: Parallel port MIDI interface
Replies: 13
Views: 551

Parallel port MIDI interface

I never managed to get the old Serial/MIDI interface on expansion bus to work on the Oric properly, but I discovered recently that there had been some Parallel Port interfaces made for PCs (mostly from MIDIMAN (now M-AUDIO) and MOTU (Mark Of The Unicorn), and I happen to have found one in Oslo today...
by Dbug
Sun Nov 28, 2021 11:42 am
Forum: Painting tricks
Topic: ULA Paint
Replies: 11
Views: 9904

Re: ULA Paint

http://miniserve.defence-force.org/svn/users/dbug/UlaPaint/ This directory seems no longer to exist. Everything that was on the old SVN is still on the existing SVN, everything that was in users is still in users. I updated the first post to link to the proper location, no need to create new folder...
by Dbug
Sun Nov 28, 2021 9:30 am
Forum: Games
Topic: Lode Runner for Oric by [raxiss]
Replies: 18
Views: 2401

Re: Lode Runner for Oric by [raxiss]

Interesting set of options :)
by Dbug
Tue Nov 23, 2021 2:06 pm
Forum: Painting tricks
Topic: ULA Paint
Replies: 11
Views: 9904

Re: ULA Paint

Well, 2021 was supposed to be the release date for Encounter...
by Dbug
Tue Nov 23, 2021 12:41 pm
Forum: Painting tricks
Topic: ULA Paint
Replies: 11
Views: 9904

Re: ULA Paint

Guess that could be simply to integrate in the tool, at least that would allow to load and save pictures ON DISK instead of the stupid .TAP crapyness I was doing :)
by Dbug
Tue Nov 23, 2021 8:03 am
Forum: Painting tricks
Topic: ULA Paint
Replies: 11
Views: 9904

Re: ULA Paint

Ultimately I did not finish it because I did not know how to do basic things in SEDORIC from a C or assembler program, like: - Get the list of files on disk - Load a file to an address in memory - Save a file to an address in memory - Delete a file - Rename a file I had thought about doing complicat...
by Dbug
Sun Nov 21, 2021 8:35 pm
Forum: Hardware hacks and extensions
Topic: ROM RAM Extentions
Replies: 7
Views: 494

Re: ROM RAM Extentions

ralle wrote:
Sun Nov 21, 2021 8:16 pm
But what is meant on page 3 is still a mystery to me.
Page 3 is the 256 bytes area from $300 to $3FF where all the I/O registers (VIA, Floppy Disk Controller, ...) are mapped.
https://wiki.defence-force.org/doku.php ... page_3_i_o
by Dbug
Sun Nov 21, 2021 8:27 am
Forum: Painting tricks
Topic: Painting programs video
Replies: 1
Views: 120

Painting programs video

I published yesterday a new video, about painting programs, it's not Oric specific, but it starts by Oric stuff (Lorigraph, Master Paint, Graphiscop) and there's a capture of Master Paint "demonstration mode" at the end of the video. https://youtu.be/1CqElJxRao0 And I realized after I was done, that...