Drive capacity names (Was: WTB: HP-85 16k RAM Module and HPIB Floppy Drive

[Fred Cisin]

>> Note that there were always some exceptions.
>> Weltec made a 5.25" drive at 180 RPM, to do "HIGH DENSITY"/"1.2M" at 
>> 250,000 bits per second on PC/XT.
>> 
>> Sony made some 3.5" drives that were 600 RPM, to use 500,000 bits per 
>> second.
>> 
>> NEC used 360 RPM 3.5" drives, to have the same format structure on their 8" 
>> "DOUBLE DENSITY", 5.25" "HIGH DENSITY", and 3.5" "HIGH DENSITY". Sometimes 
>> called "Type 3"
>> 
>> Epson (Geneva PX-8) used a 3.5" with 67.5 tpi, instead of the common 135tpi
>> 
>> Can you name another 20 exceptions?   (Chuck and Tony probably can)
>> 
>> 
>> -- 
>> Grumpy Ol' Fred             cisin at xenosoft.com
On Wed, 15 Nov 2017, Paul Berger via cctalk wrote:
> HP used 3.5" drives made by Sony that rotated at 600 RPM twice the data rate 
> but same density.

One of my favorite examples; mentioned about a dozen lines up!