Article View: comp.sys.amiga.tech
Article #5201Re: Pointer needed on bi-direction parallel i/o
From: Bill Seymour
Date: Fri, 07 Sep 1990 17:33
Date: Fri, 07 Sep 1990 17:33
45 lines
2572 bytes
2572 bytes
In article <dillon.5762@overload.Berkeley.CA.US> dillon@overload.Berkeley.CA.US (Matthew Dillon) writes:
:In article <1990Aug29.202423.25341@agora.uucp> billsey@agora.uucp (Bill Seymour) writes:
:>
:>Normally, you just jumper
:>between select and acknowledge for two machines.
:
: Yes, exactly. I dunno how you would go about making such a cable, but
: the connections are the same.
Seems to be a simple enough task with ribbon cables. Build a gender
changer type gizmo on one end that does the jumpering (maybe conversion
between 1000 and 2000 parallel port at the same time) then hook each machine
into a chained ribbon cable. Just like with SCSI.
: I think Doug needs to add a few
: additional options to NET: to support more than two amigas, setting
: UNIT=2 will not work (it only checks 0, non-0 from what I understand)
I, for one, will keep on bugging him. :-} Too bad he has to work
for a living... He could get so much more PD done if he didn't...
: Three amigas will probably work but likely 4 will be unreliable... one
: would need to make a circuit board with real open collector drivers (use
: the same spec as IEEE-488 for line loading).
I'll have to start looking into this... Maybe I'll end up with a whole
bunch of little circuit boards that hook to each machines parallel port...
Gee, I could cenvert to fiber at the same time and allow for *long* networks.
Put in things like switches to go between printer/network... :-}
: -Matt
:
:> -Bill Seymour ...tektronix!reed!percival!agora!billsey
:
: Matthew Dillon dillon@Overload.Berkeley.CA.US
: 891 Regal Rd. uunet.uu.net!overload!dillon
: Berkeley, Ca. 94708
: USA
--
-Bill Seymour ...tektronix!reed!percival!agora!billsey
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!orc!inews!iwarp.intel.com!psueea!parsely!agora!billseyReferences:
<dillon.5650@overload.Berkeley.CA.US> <1990Aug29.202423.25341@agora.uucp> <dillon.5762@overload.Berkeley.CA.US>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!orc!inews!iwarp.intel.com!psueea!parsely!agora!billsey From: billsey@agora.uucp (Bill Seymour) Newsgroups: comp.sys.amiga.tech Subject: Re: Pointer needed on bi-direction parallel i/o Message-ID: <1990Sep7.173321.4731@agora.uucp> Date: 7 Sep 90 17:33:21 GMT References: <dillon.5650@overload.Berkeley.CA.US> <1990Aug29.202423.25341@agora.uucp> <dillon.5762@overload.Berkeley.CA.US> Organization: Open Communication Forum Lines: 45