archive.worldofdragon.org

I've used the Godil based emulator, and it is indeed excellent, being able to supend the CPU and look at registers / memory / single step is
indeeed useful.

There is anew version that has a proper level translator board and a cheapish FPGA development board.

Cheers.

Phill.

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...

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...

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.

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.

Sounds like a good idea to me.

Cheers.

Phill.

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...

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...

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...

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...