[Coco] dEd disk editor for RS-DOS

[Richard E. Crislip]

On Thu, 20 Nov 2025 15:09:43 -0600
Allen Huffman via Coco <coco at maltedmedia.com> wrote:

> I believe it was Robert Gault who made an RS-DOS clone of the OS-9
> disk editor, dEd. I thought I had it, at one point, but cannot find
> it now. I believe it may have required an 80 column screen, working
> only on the CoCo 3.
> 
> I am wondering if there is a disk editor for CoCo 1/2’s 32 column
> screen — but not just a hex editor. dEd (under OS-9) would identify
> when you were looking at the FAT, for example. I do not recall of the
> RS-DOS dEd did something similar when looking at track 17 (FAT and
> directories).
> 
> When time allows, I have been falling down a deep rabbit whole about
> DECB/RS-DOS disk structure (more fun to experiment and learn). Having
> a disk editor would be useful. 
> 
> I do not recall if I ever had one in my pre-OS-9 days.
> 
> 		— Allen
> 
> 

Back in the day, I used a RSDOS program called Zap or DiskZap. I may
still have it but I'll have to go through my archives.