Nice!
I saw the manual of the original Rulaford MIDI interface for the CoCo and the ports were different, so the jumper is a nice touch.
Do you have the Dragon version of the manual by any chance?
Search found 1539 matches
- Sun Jun 02, 2024 10:04 pm
- Forum: Uploads
- Topic: MIDIV10 by Ian Jones
- Replies: 7
- Views: 174
- Fri May 31, 2024 10:59 am
- Forum: Uploads
- Topic: MIDIV10 by Ian Jones
- Replies: 7
- Views: 174
Re: MIDIV10 by Ian Jones
I found another funny thing :mrgreen: When operating the disk drive (which is funny because you cannot have the disk cartridge and the midi cartridge together unless you have a MPI or similar device), the program tries to OPEN"I",#2,"LARGO.M10" which in the Dragon results in a ?DN ERROR Where can I ...
- Fri May 31, 2024 10:00 am
- Forum: Uploads
- Topic: MIDIV10 by Ian Jones
- Replies: 7
- Views: 174
Re: MIDIV10 by Ian Jones
I also found this: https://github.com/go4retro/MIDIMaestro Which references the Rulaford MIDI Interface, could that be it? Looking at the V1 schematics, which should be closer or that of the original cartridge, turns out that address bits 5,6,8,9,10,11,12,13,14 and 15 are fed into the 74LS133 NAND g...
- Fri May 31, 2024 9:09 am
- Forum: Uploads
- Topic: MIDIV10 by Ian Jones
- Replies: 7
- Views: 174
Re: MIDIV10 by Ian Jones
Heh, The code is writing to port &HFF74 as if it were a control port and &HFF75 like a data port: 440 :'PLAYBACK 450 CLS:GOSUB 90 455 T2=60000/TEMPO 460 POKE&HFF74,3:POKE&HFF74,22 :'SET MIDI 470 POKE&HFF75,207:POKE&HFF75,NS:'STYLE 480 INPUT "ENTER TO START";ST 490 FOR J= 0 TO 3:'VOICE 500 POKE&HFF75...
- Fri May 31, 2024 9:04 am
- Forum: Uploads
- Topic: MIDIV10 by Ian Jones
- Replies: 7
- Views: 174
Re: MIDIV10 by Ian Jones
Maybe it controls a cartridge hosting a midi device?
The program is written in Basic, so we could take a peek...
The program is written in Basic, so we could take a peek...
- Fri May 24, 2024 2:33 pm
- Forum: Dragon Hardware
- Topic: Dragon Beta GitHub
- Replies: 35
- Views: 44591
Re: Dragon Beta GitHub
Behold!
A fully assembled Dragon Beta board!
I need to make a video cable and probably use my trusty Meanwell PSU to power it. Fingers crossed...
A fully assembled Dragon Beta board!
I need to make a video cable and probably use my trusty Meanwell PSU to power it. Fingers crossed...
- Sun Apr 28, 2024 8:27 pm
- Forum: Dragon General
- Topic: Run Flex with DriveWire
- Replies: 8
- Views: 24016
Re: Run Flex with DriveWire
This is going to come in handy, thanks a lot!
- Mon Apr 22, 2024 6:25 pm
- Forum: Dragon Hardware
- Topic: Dead Dragon repair - black and white vert.bars on screen
- Replies: 2
- Views: 6922
Re: Dead Dragon repair - black and white vert.bars on screen
Welcome to the Dragon Archive! I had a similar problem with a CoCo2, and turn out to be a bad MC6847 video chip. Other culprits could be the roms. If they have given up their ghost and become corrupted, you could get a bad video initialization. If you type CLOAD and press Enter, do you hear the rela...
- Fri Apr 19, 2024 5:13 pm
- Forum: Dragon General
- Topic: Cuthbert and the Earworms
- Replies: 5
- Views: 6503
Re: Cuthbert and the Earworms
They sound really good and the lyrics are fantastic
- Sat Mar 30, 2024 12:13 pm
- Forum: Uploads
- Topic: EPROM programmer manual (Spanish)
- Replies: 0
- Views: 8141
EPROM programmer manual (Spanish)
I think the title already spoils all the fun, so here you have it!