Some said they have CDOS and Cromemco disks

[Allison]

>Subject: Re: Some said they have CDOS and Cromemco disks
>   From: "Randy McLaughlin" <cctalk at randy482.com>

>Adding a "single-density" drive to a PC does not give you the ability to 
>read single density.

There is for all intents no such animal as a "single density drive".  

>The PC itself is what needs to be able to handle FM.

Some can, some can't.  The 765 FDC core knows both and and *should*
but with the bare 765 chip that requires a bit of external logic around 
clocks and data seperators.  For the later integrated 765 cores like 
the 37C65 it's more a programming issue.  One caveat on that is the 
slowest rate (125kb/s 5.25 SD) is often not available however if you 
have a standalone XT or AT class clard the typical 16mhz clock on the 
board can be replaced with a 8mhz (move all the data rates down by 50%).

I have such a hacked board as it was an older one using a 765A and 
came with a rare thing, a schematic.  However bios support for 
such a thing is NOT there and you have to do all the work and even 
for an unhacked board the bios may be less than helpful.



Allison