[Coco] Dumping a JDOS 1.11 ROM

[Bill Pierce]

Mark, though not Unix-ish, the windows "wimagetool.exe." that used to come with mess will do it in seconds.

https://dl.dropboxusercontent.com/u/23059963/Stuff/wimgtool.exe

It's all I use to move files back and forth.
There is also another version that deal with os9 disk's directories better but the rsdos part is not as good.

https://dl.dropboxusercontent.com/u/23059963/Stuff/wimgtool2.exe

Hope it helps.

Bill Pierce
My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Co-Webmaster of The TRS-80 Color Computer Archive
http://www.colorcomputerarchive.com/
Co-Contributor, Co-Editor for CocoPedia
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E-Mail: ooogalapasooo at aol.com




-----Original Message-----
From: Mark J. Blair <nf6x at nf6x.net>
To: CoCoList <coco at maltedmedia.com>
Sent: Sun, Oct 6, 2013 9:05 pm
Subject: [Coco] Dumping a JDOS 1.11 ROM


I've noticed that my J&M controller came with a version 1.11 JDOS ROM, but that 
particular version isn't in the repository. So, I figured I should dump it to 
make sure it gets preserved.

The EPROM is a Motorola MCM68764C. I tried dumping it in my Data I/O 212, but it 
gives me a "Pin 23 error 75" error, or something like that.

So, my next idea was to dump it in place on my CoCo. Wired doesn't seem to like 
JDOS, as it gave me a syntax error when I ran the loader program. So, I tried 
saving the ROM contents under JDOS with:

  SAVEM "JDOS111",&HC000,&HDFFF,&HC000

Then I changed over to the FD-501 controller and used Wired to transfer the 
image of the floppy I saved onto over to my Mac.

Now I have a .DSK image of a a floppy with the SAVEM'd ROM image on it... but I 
don't know how to (easily) get the file off of the .DSK image so I can further 
massage it into a raw binary and an Intel hex file.

So before I go writing yet more code to decipher a DECB-formatted .DSK image, is 
there a utility already out there that will do what I need? I normally use a Mac 
so I would prefer UNIX-ish utilities, but I can also run WinXP in a virtual 
machine.

-- 
Mark J. Blair, NF6X <nf6x at nf6x.net>
http://www.nf6x.net/


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