18 Aug
2015
18 Aug
'15
12:57 a.m.
On 08/17/2015 04:09 PM, Fred Cisin wrote:
There are plenty of PCs that can run ImageDisk and/or
Teledisk that
CAN NOT do single density (FM). Neither of those pieces of software
alter the hardware capabilities of the machine.
It's odd, but later PC floppy support is often better in the FM support
mode. For example, a Socket AM2 board is more likely to support FM
than, say, Socket 7 one.
ISA SCSI adapters with onboard floppy support are always a rich source
of good FDCs--in particular Future Domain, Ultrastor Adaptec and DTC and
others All tended to use an NSC DP8473 or a variation of it. That
means that you actually have 4-floppy support should you need it, albeit
with no BIOS support (which doesn't matter to TD, AD or IMD). I've
modified a couple of such controllers to support a third drive on a
single 34-conductor cable.
For whatever it's worth,
--Chuck