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
