29 Mar
2001
29 Mar
'01
5:36 p.m.
Tony Duell skrev:
> Oops, I forgot I was using such drives, too. Is
that what Shugart defines?
Basically, yes. It's a de-facto standard using a 34
pin edge connector
(or a header plug on 3.5" drives -- with essentially the same pinout).
It's a low level interface -- raw data to/from the read/write
electronics, a signal to move the head one cylinder and one to say the
direction of movement, status signals for track0, write protect, and so on.
Apart from the Mac drives, I've got one other drive which is not all that bog-
standard. It's the HD drive in my Amiga 4000, which has been factory modified
to run at a slower speed when encountering a HD disk, so as not to saturate
the Paula chip. It's a shame that Commodore decided to change the drive
instead of the controller.
> What is a DD50? I'm thinking of the connector
used on PS/2s, which looks
> like
A 50 pin D-connector. 3 rows of pins in a shell wider
than all the other
D connectors.
Nope, that's not it.
> a small Centronics connector.
No, that's no the one I was thinking of, but I am
sure I've seen such
connectors on other machines (DEC?)
Some VAXes used a small Centronics connector as well, but it's not the same
kind, either. =)
--
En ligne avec Thor 2.6a.
Haben Sie schon mal einen Wegweiser gesehen, der selbst den Weg geht, den er
weist?
--- Ludwig XV (K?nig von Frankreich, 1710-1774)