3 Nov
2007
3 Nov
'07
3:13 p.m.
That's like the opposite of what Amiga did to add
2MB (raw) high-density
floppy support to all models - since it wasn't feasible to get the
installed userbase to upgrade their Paula chips, even if C= wanted to
make a new one, they went the other way - the drive spins at half-speed
when high-density media are inserted so that even a 1985 Paula can
keep up with the bitstream.
I've heard of 1.2M 5.25" drives that spun at 180rpm (not the normal
360rpm) so that a PC/XT controller could read/write 1.2M disks. I have
never seen one, though.
-tony