12 Sep
2002
12 Sep
'02
1:24 p.m.
--- Pete Turnbull <pete(a)dunnington.u-net.com> wrote:
On Sep 12, 9:51, Ethan Dicks wrote:
Perfect! Just the sort of page I knew existed somewhere... here's
a helpful table from it:
And here are the serial connections from page A-4 of "Inside Appletalk"
Second Edition:
Wire Sig MiniDIN-8 DE-9
-------------------------------------
Red TxD- pin 3 pin 5
Blu RxD- pin 5 pin 9
Wht RxD+ pin 8 pin 8
Grn TxD+ pin 6 pin 4
GND Case Shield Shield
That's the information you need to make a MiniDIN-8 to DE-9
adapter like the one sitting next to me (I really didn't want
to have to pull it and whip out the continuity tester; I *knew*
this was not hard-to-get information).
The comment that page makes about hooking Apple's cable scheme to
Farallon's is absolutely true. My mother's network had a satin
cable with an Apple connector on one end, and an RJ-11 on the other
to bridge the two wiring schemes. I did not make it. She did not
make it. AFAIK, she bought it from Farallon.
Thanks for the excellent link, Pete.
-ethan
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--- Carlos Murillo
<carlos_murillo(a)epm.net.co> wrote:
> >> Now I have another question: How do
you connect the Fastpath 4's
> >> DE-9 Localtalk connector to a phonenet network?
> >With a standard (ancient)
DE-9<->PhoneNet adapter. Barring that, I
> >have made DIN-8 to DE-9 LocalTalk adapters
All the commercial LocalTalk and Phonenet adaptors contain an isolating
transformer, which is carefully designed to preserve nice clean square
waves from one side of the interface to the other. Note that you can't
just use any old small transformer! There's a web page describing the
innards at
http://ground.ecn.uiowa.edu/apple2/MiscInfo/Hardware/appletalk.phonenet