Search found 236 matches

by prime
Thu Mar 26, 2020 8:12 pm
Forum: Dragon General
Topic: Dragon Beta OS-9 disks
Replies: 13
Views: 1675

Re: Dragon Beta OS-9 disks

Thanks, at least I can now rule out any mis-interpretation of the floppy format. Are all discs bootable? Took another look at the driver last night, the implementation of the memory banking looks overly complicated, and is probably now broken. The memory sub-system in MAME has improved immensely si...
by prime
Thu Mar 26, 2020 1:32 am
Forum: Dragon General
Topic: Dragon Beta OS-9 disks
Replies: 13
Views: 1675

Re: Dragon Beta OS-9 disks

Who actually has these Beta OS-9 floppies? Could they be re-imaged in a more suitable format such as HFE? I have a copy of them, I can rig up a grease wezel setup and archive them at some point if you want. Yes please :) I've uploaded the zipped .scp files of the disks to : http://penguin.stats.war...
by prime
Wed Mar 25, 2020 7:03 pm
Forum: Dragon General
Topic: Dragon Beta OS-9 disks
Replies: 13
Views: 1675

Re: Dragon Beta OS-9 disks

Pernod70 wrote:
Sat Mar 21, 2020 1:33 pm
Who actually has these Beta OS-9 floppies? Could they be re-imaged in a more suitable format such as HFE?
I have a copy of them, I can rig up a grease wezel setup and archive them at some point if you want.

Cheers.

Phill.
by prime
Tue Mar 03, 2020 11:04 am
Forum: Dragon General
Topic: Dragon ROM souce code.
Replies: 3
Views: 185

Dragon ROM souce code.

Hi all,

Just to let you all know I have put the dissassembled, re-assembleable and commented source for the Dragon 32 & 64 ROMS online at :

https://github.com/prime6809/DragonRom

Cheers.

Phill.
by prime
Sat Jul 27, 2019 12:14 pm
Forum: Discuss This Site
Topic: Hardware Forum Needed?
Replies: 3
Views: 3693

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: 2790

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: 2790

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: 2790

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: 4058

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: 8777

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.