[Coco] Reading/Writing Model I/III/4 Disks on a CoCo

[Al Hartman]

That's not a problem unless you are trying to write single density Model I 
disks. And, if you have Super Utility for the Model I you can re-write the 
Data Address Marks to make them correct.

Most Coco Disk Controllers I know of use a disk controller chip compatible 
with the Model III/4.

I would check Craigslist, or a local recycler for an old XT class computer 
to use to make the disks on. I have one here I am building an 8-bit IDE 
Controller for to use a CF Card as a hard drive. 
(http://www.lo-tech.co.uk/wiki/Lo-tech_ISA_CompactFlash_Adapter_revision_2)

The other problem with using a Coco to make disk images, is that few people 
have hard drives for them to host the images on. I guess one could use 
Drivewire for that purpose. But, again, there's no software to write the 
image out.

If one has a PC with a 360k drive (you can add one to most machines up to 
Windows 98), Dave Dunfield's Imagedisk will allow you to image disks or 
create disks from images. He has some Model 4 disks available on his page. 
(http://www.classiccmp.org/dunfield/img/index.htm)

Some of the TRS-80 Emulators on the PC also come with utilities to image, or 
write disks as well.

- Al -

-----Original Message----- 
From: goosey

I think the CoCo's floppy controller could do it, but as far as I know 
nobody's written the code. Far worse than the 35/40 track issue is the fact 
that TRSDOS and cousins screw around with the inter-sector markings. I'm not 
entirely sure about the details.

Willard
Sent from Samsung tablet

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