[Coco] Re: Re: Re: Disk Basic and 512 byte block floppies.

[Theodore Evans (Alex)]

On Jan 20, 2004, at 6:00 AM, Gene Heskett wrote:

> Ok, when I saw the 128 byte sector as a posible option, I assumed
> (theres that word again) that it was an apple format.  My bad.  There
> are all sorts of weird formats in the list of possible formats, 90%
> of which I've never come in contact with.  Anyway, there is a file
> someplace on the system, and whose location and name eludes me ATM,
> that one can edit to add the coco formats as this gives them a name
> that you can then preset the driver tow ork with, and such settings
> are valid until that disk is removed, at which point the defaults are
> restored, so one has to do the re-init operation after inserting each
> disk in the drive.

All CP/M disk formats use virtual 128 byte sectors, and a few (very 
few) use physical 128 byte sectors.  As for some of the others Osborne 
1 single density disks use 1024 byte sectors and double density use 
2048 byte sectors.