Search found 232 matches

by prime
Sat Jul 27, 2019 12:14 pm
Forum: Discuss This Site
Topic: Hardware Forum Needed?
Replies: 3
Views: 2226

Re: Hardware Forum Needed?

Sounds like a good idea to me.

Cheers.

Phill.
by prime
Sat Jul 20, 2019 7:22 pm
Forum: Dragon General
Topic: Loading files into Xroar....
Replies: 9
Views: 1786

Re: Loading files into Xroar....

Just use File->Load or File->Run. XRoar recognises initial $55 (in a file with ".bin" extension) as DragonDOS and parses the header. You should then find it in memory... (FWIW, if it sees an initial $00, it tries it as a CoCo RS-DOS binary instead) Oh, and BASIC files not supported yet... Should pr...
by prime
Sat Jul 20, 2019 7:21 pm
Forum: Dragon General
Topic: Loading files into Xroar....
Replies: 9
Views: 1786

Re: Loading files into Xroar....

MAME / MESS can't load these files natively, but a version with the debugger enabled I can drop to the debugger console and use the load command to load the file at load address - header len with something like : I could easily add native support for these using the Quickload option. Can you post a...
by prime
Fri Jul 19, 2019 11:21 pm
Forum: Dragon General
Topic: Loading files into Xroar....
Replies: 9
Views: 1786

Loading files into Xroar....

Hi All, Is there a way of loading files that have a DragonDos header into Xroar....not here I don't mean from a disk image! Files in theis format are what the DragonMMC uses for files saved direct to the FAT filesystem with MLOAD / MSAVE. The format of the header is : Byte(s) Purpose $00 Start marke...
by prime
Fri Jul 12, 2019 2:42 pm
Forum: Hints and Tips
Topic: Dragon MMC and AGD games
Replies: 10
Views: 2652

Re: Dragon MMC and AGD games

As your board has a 'special' DOS that uses some code from $E000 on to talk to the AVR, I am sure that we could reduce some 'not needed' DOS commands and fill this area with the code made to send/receive data via AVR. I would like to work on that 'mini-DOS' if you don't mind. Just will need the asm...
by prime
Thu Jul 04, 2019 11:19 pm
Forum: Dragon General
Topic: Dragon Meetup 2019
Replies: 24
Views: 6218

Re: Dragon Meetup 2019

People on the FB group will already have seen this.....

Should be arriving mid to late afternoon on Friday, so deffo up fro food / beer on friday night, if anyone else will be in Cambridge.

Cheers.

Phill.
by prime
Thu Mar 28, 2019 11:18 am
Forum: Dragon General
Topic: Flex : dragon disk driver....
Replies: 0
Views: 859

Flex : dragon disk driver....

Hi all,

Does anyone know if the Dragon disk driver source code is available for flex?

Cheers.

Phill.
by prime
Fri Dec 28, 2018 8:22 pm
Forum: Hints and Tips
Topic: Dragon MMC and AGD games
Replies: 10
Views: 2652

Re: Dragon MMC and AGD games

Somthing to remember when comparing CoCoSDC and DragonMMC is that IIRC CoCoSDC emulates the floppy controller hardware, DragonMMC does not. In fact the early versions of DragonMMC had no disk support at all. DragonMMC has the following memory map when switched on, all in map 0 : $0000-$7FFF Normal 3...
by prime
Thu Jul 19, 2018 9:31 am
Forum: Dragon General
Topic: Sick Dragon 32
Replies: 36
Views: 5388

Re: Sick Dragon 32

he also was working on an RGB board for the D32 so he should know how to resolve your issue. I was actually the one developing the RGB borard, though Bas was beta testing. Project was shelved as couldn't get it to work to my satisfaction, and board was a bugger to assemble. Prime on here knows him ...
by prime
Fri Jul 13, 2018 7:34 am
Forum: Dragon General
Topic: Sick Dragon 32
Replies: 36
Views: 5388

Re: Sick Dragon 32

Vyper68 wrote: This issue 2 is really early too the date code for the chips are week 44 1982 there are only 8 OKI chips as well.
That sounds like one of the boards using "half good" 64K chips. Those are the easiest boards to upgrade to 64K.

Cheers.

Phill.