26 Dec
2003
26 Dec
'03
4:43 p.m.
From: "Fred Cisin" <cisin(a)xenosoft.com>
Subject: PC 160K and 320K are NOT SINGLE DENSITY
I must be a bit more precise. I'm not talking about the 765's and such, but
of the controller chips used in PC's (and especially the ones embedded on
the motherboards). I had a system, where I could run MicroSolutions' UniForm
software on the internal drives. When I changed motherboard or floppy
controller (cant remember what), it was not possible anymore. The DOS
version was not changed.
Maybe we can agree on "modified firmware" ?
Nico
On Fri, 26 Dec 2003, Nico de Jong wrote:
> > "Note that most PC floppy controllers have broken single density
modes.
> Well, that's old hat to me. Around 1988 or
so, I suddenly got problems
> reading "elderly" 5.25" discs on new PC's. The reason was, that
the 160K
and
> 320K capacities were "designed out" of
the floppy controllers normally
used
in PC's
HOW can you "designed out" 160K and 320K?
Those are PHYSICALLY the same as the PC 360K format that is
still actively supported.
Any system that can read PC 360K, but not PC 160K and 320K
has BROKEN SOFTWARE, NOT a hardware issue.