On 2023-08-13 12:18, Warner Losh via cctalk wrote:
On Sun, Aug 13, 2023, 10:11 AM Chuck Guzis via cctalk<cctalk@classiccmp.org>
wrote:
On 8/13/23 08:39, Nigel Johnson Ham via cctalk wrote:
You've amplified my point, Fred! When I saw the abomination of
cross-over selects in the cables in the IBM PC, I knew the need for
Field Service Engineers was coming to an end!
I don't believe anything on Wikipedia anymore. When I saw them say that
there is no such thing as a legal definition for a pint of beer in
Canada, I got an actual legal definition from the Federal Government,
created an account on wikipedia, and put in the correct legal definition
with a reference to the law. (It's 568.26 ml btw - make sure you get
that last .26ml :-) )
I week later it had been changed back to the previous text, and I could
not get in to correct it!
You should see the "interesting" cabling for getting three drives on a
PC controller, using only one cable. Several ISA SCSI and ESDI
controllers could accommodate this on their floppy section..
At least one DTC controller allowed for running 4 drives the way Al
Shugart intended--common motor, different drive selects.
The DEC Rainbow did that... insert rx50 disclaimer... I did it with 2 teac
drives that both spun on any access
and some early NEC computer I saw at computer land iirc... or maybe the
latter just kept the drives spinning
Warner
--Chuck
The DEC Rainbow RX50s only have one motor :-)
--
Nigel Johnson, MSc., MIEEE, MCSE VE3ID/G4AJQ/VA3MCU
Amateur Radio, the origin of the open-source concept!
Skype: TILBURY2591
