Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!julius.cs.uiuc.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!jb10320 From: jb10320@uxa.cso.uiuc.edu (Desdinova) Newsgroups: comp.sys.apple2 Subject: Re: Modem Port HELP!!!! Message-ID: <1990Sep30.185602.20319@ux1.cso.uiuc.edu> Date: 30 Sep 90 18:56:02 GMT References: Sender: news@ux1.cso.uiuc.edu (News) Organization: University of Illinois at Urbana Lines: 58 In article jm7e+@andrew.cmu.edu (Jeremy G. Mereness) writes: > >What are the differences (technical and otherwise) between the GS's >modem port and a Mac? I have a modem set up in my house that feeds a >line to the upper floor where I share it with a housemate with a Mac. >On the Mac, there is no problems whatsoever. But on the GS, there are >terrible data transmission problems. > >I have ruled out everything except the GS itself. I am running Proterm ^^^^^^^ Ewwwww! Ick! >as comm software. I get garbage from the port along with whatever data >is coming over the line, while the mac has no problems. My theory is >that the GS is not putting as much power through the modem port as the >Mac. My GS is rather loaded, with a filled GS-RAM and a SCSI-C card >and only a Apple stock power-supply, but I am surprised that the modem >port on my machine cannot cut what the mac is doing. You need to make sure you have the "Null Modem" driver selected in the Proterm installation section. Proterm won't raise the baud rate higher than the modem you have selected can handle... i.e. if you have a 2400 baud modem proterm will keep the port at 2400 baud even if you tell it 9600 baud. It doesn't even tell you it's doing this. Pretty brain-dead philosophy, if you ask me Also, you didn't specify whether everything is garbage or the transmission is merely noisy. If it's noisy, that's another problem altogether. The GS and Mac use the same serial chip, so I doubt it's a problem like what you suggesed. BTW, I don't believe a SCSI card and a full ramcard would drag down the power supply. If they were you'd almost certainly be having other problems. Also, if the Mac is receiving perfectly what you're sending, I haven't the foggiest, besides maybe you've got cords tangled with each other and causing interference on your side. Or, more likely, the mac isn't sending right :-). Reply to this, and describe your problems with as much detail as you can muster. I've had a lot of experience with this kind of stuff, but I need data... >Help Please!!!! I hope I did. >^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ >|Jeremy Mereness | Support | Ye Olde Disclaimer: | >|jm7e+@andrew.cmu.edu (internet) | Free | The above represent my| >|a700jm7e@cmccvb (Vax... bitnet) | Software | opinions, alone. | >|staff/student@Carnegie Mellon U. | | Ya Gotta Love It. | >------------------------------------------------------------------------- -- Jawaid Bazyar | Blondes in big black cars look better wearing Senior/Computer Engineering | their dark sunglasses at night. (unk. wierdo) jb10320@uxa.cso.uiuc.edu | The gin, the gin, glows in the Dark! | (B O'Cult) Apple II Forever! Apple II Infinitum! Give me Woz or Give me Amiga!