Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!mips!apple!claris!wombat From: wombat@claris.com (Scott Lindsey) Newsgroups: comp.sys.apple Subject: Re: Appletalk and Serial Ports Keywords: dully, Peale, central, cartridge Message-ID: Date: 5 Mar 90 23:12:38 GMT References: <0ZvSrYi00VRhM4YlZO@andrew.cmu.edu> <1990Mar2.211407.8936@spectre.ccsf.caltech.edu> <39143@apple.Apple.COM> Sender: wombat@claris.com Organization: Claris Corporation, Santa Clara, CA Lines: 43 In-reply-to: toddpw@tybalt.caltech.edu's message of 2 Mar 90 21:14:07 GMT Subversive: DES In article <1990Mar2.211407.8936@spectre.ccsf.caltech.edu> toddpw@tybalt.caltech.edu (Todd P. Whitesel) writes: > jm7e+@ANDREW.CMU.EDU ("Jeremy G. Mereness") writes: > >What is it with the //GS and Appletalk? I am chagrined to discover > >that I cannot use my serial port if I also use Appletalk! > Ahem. You have to plug Appletalk into one of your serial ports. Therefore > you can't use ONE of your serial ports if Appletalk is enabled. > You can still use the other one with no problems. C'mon, read the entire message before replying. Jeremy also said: >I haven't discovered what the firmware is going to do, i.e. just >turning on the Appletalk firmware in the control panel, but if >Appleshare drivers are installed and running on the system, the >machine is bombarded with interrupts that, among other things like >hinder performance, raise hell with communications through the modem >port! He's not talking about where to plug things in and how to set up the slots; he's talking about problems that arise when the machine is configured for a serial port and AppleTalk and is attempting to use both. Dave Lyons wrote that he hadn't had any problems with it, using software that intercepted the serial interrupt vector. I'll have to look at how AWGS uses the serial port (since I had almost nothing to do with the Comm module), but this is a problem we experienced and is the reason for the "Warning: AppleTalk enabled - Data loss likely" message that Comm displays. (Note: Comm only checks slot 7 for AppleTalk, so if you have a ROM 03 machine with AppleTalk set to slots 1 or 2, you may not see this message. It's also possible that this interference may not happen on a ROM 03... I haven't been able to check.) I seem to recall that data loss at 1200bps was tolerable, but was somewhat annoying at 2400 and above. Scott Lindsey | I dig iguana in their outer space duds Claris Corp. | saying, "Aren't you glad we only eat bugs?" ames!claris!wombat| DISCLAIMER: These are not the opinions of Claris, Apple, wombat@claris.com | StyleWare, the author, or anyone else living or Dead.