8 Aug
2011
8 Aug
'11
2:05 p.m.
On 8 Aug 2011 at 20:19, Tony Duell wrote:
Actually, I forgot about the scond disk controller,
which means the
thing can actually have 6 floppy drives. However, the last 2 are not
accessible from MS-DOs, only from special softwate.
I have an old "tower" fitted with 5 3.5" floppies and 1 360K floppy,
three controllers (including the one on the hard disk controller).
The three floppy controllers use different DMA, IRQ and port
addresses. All are accessible through DOS (drivers).
I have a bit of software that we marketed for a short time that
writes to three drives simultaneously as a copying utility. We sold
it to a few commercial customers.
--Chuck