Re: New idea HD for C=

From: Ethan Dicks (
Date: 1999-09-05 17:04:32

--- Todd S Elliott <> wrote:
> On Sun, 5 Sep 1999 04:36:55 +0100 (GMT) Richard Atkinson
> <> writes:
> > 1. Have the 1541 ROMs been disassembled and fully documented yet?
> > 
> Yes. AFAIK, Inside Commodore DOS is the only book I know of that contains
> the disassemblies and as well as drive programming and copy protection
> schemes.

An excellent source.
> > 2. Is CBM-DOS capable of accessing large drives? 
> Depends on the drive DOS. If it's the DOS as found in the drives
> associated with the PETs, then I believe they can recognize large drives.

DOS3.0 is used on the hard disks.  I do not recall the max size, but it's
only a few meg, and it has no concept of a directory structure.  Perhaps
the 1581 scheme might be more adaptable?  At least then you could have virtual


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