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Re: DOS 3.3: "64K Slave Disk" ?



On Fri, 13 Jan 2006, Paul Schlyter wrote:

In article <Pine.LNX.4.62.0601130103400.10680@static-141-149-129-16.buff.east.verizon.net>,

I know Diversi-DOS is capable of making 64K DOS boot disks, but I don't
really want to use Diversi-DOS.

Does anyone know if it's possible to make a 64K DOS boot disk with a
normal DOS? (Actually, STOS, the one I use on the DOS 3.3 versions of
Apple Crunch.)  I have a crunched program that hangs under 48K DOS and
ProDOS+BASIC.SYSTEM but works fine with ProDOS+PDOS.SYSTEM, RDOS and 64K
DOS.

If you by "a normal DOS" mean an unmodified standard version of DOS 3.3
(or 3.2 or 3.1): No, that's not possible.  DOS would have to run in the
Language Card (or some other equivalent RAM card), and that would require
some code for bank switching when needed.  And a normal DOS does not have
this bank switching code.  Therefore, modifications to the standard DOS
3.3 will be needed if you want to put it in the Language Card.

ProntoDOS has a program DOS-UP that will do this for standard DOS. I just don't want to have to have a separate file in the CATALOG.

-uso.