I seem to recall doing this years ago with a Mac Duo 230. I built a FrankenCable out of a Mac modem cable to a 25 pin null modem adapter. It was to a Sparc 20. I believe that had a 25 pin serial port. The Sparc 20 serial port was wired just like a standard PC one; you could use a "standard" 25 pin modem cable to hook up a modem.
I used Zterm. If Zterm complains about not being able to open the port, than either Appletalk or some other device has grabbed it. This was really exciting on the Duo - the printer and modem share the same port!
Stephen
More than likely, its the wrong cable. I ran into a similar problem getting an old managed switch to work. (had a mini-din=8 serial console).
the pin outs are different on the switch were different than mac serial. Ie, pin 1 is used on the switch console port while pin 2 is doing nothing. On macs, pin 1 does nothing and pin 2 is used. There were other horrible mismatches. The only real option it to go to blackbox.com and get a couple of mini din 8 to din 9 serial adaptors then use a null modem cable. be prepared to hack the cable as necessary to get the pinouts correct.
Matt
--- Sean Brown <[EMAIL PROTECTED]> wrote:> <--Ok ya it looks like it is the wrong cable, but ZTerm will listen on the printer port now that i disabled AppleTalk, thanks a lot, but it still wont listen on the modem port, cant figure out why.
-Sean
On January 09, 2004 12:10 pm, Doug McNutt wrote: > At 11:07 -0700 1/9/04, Sean Brown wrote: > >Ok i found a cable here from when my dad worked on macs, and if i remember > >correctly it was to attach to a hayes 28.8 modem from an SE and SE/30. > > When i fired up ZTerm, it said, Unable to open Serial port, please choose > > another port., and it did the same choosing the printer port. > > That does not sound like the cable but be sure you have a cable designed > for a modem and not for a printer anyway. (Well, I suppose the Sun might > look like a printer in which case that should be reversed. But Sun was > pretty good about standards.) > > Be sure AppleTalk is turned off to try the printer port. Control panels > > Be sure there is no other stuff operating - like a FAX program - which can > take over the modem port. > > Try it with a modem - or nothing - connected. Zterm may be testing with an > "AT" command which you don't want to do. Don't attempt a dial up > connection. Just hit a return and remember that UNIX needs a line feed "0A" > rather than a Mac carriage return "0D". > > I used Synergy Software's Versaterm for just what you're trying to do and > it truly understood UNIX'y machines. It's no longer maintained, but it did > provide better error messages. > > -- > --> The best programming tool is a soldering iron
-- Compact Macs is sponsored by <http://lowendmac.com/>.
Support Low End Mac <http://lowendmac.com/lists/support.html>
Compact Macs list info: <http://lowendmac.com/lists/compact.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/compact.macs%40mail.maclaunch.com/>
---------------------------------------------------------------
The Think Different Store
http://www.ThinkDifferentStore.com ---------------------------------------------------------------
