whiteaj@clutx.clarkson.edu (Andrew White) (08/08/90)
I am using both a Mac and an IBM AT with my LaserWriter IINTX, and the
only way to use both (without making the AT support LocalTalk) is to
switch dip switch #2 back and forth, up for LocalTalk and down for RS-
232. The manual mentions (on page 125, I believe) that these switches
can be set by "downloading a PostScript program". I take that to mean
that PostScript can set the switches. The manual does not, however,
mention *how* to do this.
Anyone have any suggestions?
/| | | / :: Chemistry Department, Lab 128C
/ | | | /| / :: Clarkson University (315) 268-6626
/__| | |/ |/ :: Potsdam, NY 13699-5810 whiteaj@clutx.clarkson.edu
__/ ==========::=====================================================dall@plains.UUCP (Brian Dall) (08/08/90)
In article <1990Aug7.225900.22721@sun.soe.clarkson.edu> whiteaj@clutx.clarkson.edu (Andrew White) writes: >I am using both a Mac and an IBM AT with my LaserWriter IINTX, and the >only way to use both (without making the AT support LocalTalk) is to >switch dip switch #2 back and forth, up for LocalTalk and down for RS- >232. The manual mentions (on page 125, I believe) that these switches >can be set by "downloading a PostScript program". I take that to mean >that PostScript can set the switches. The manual does not, however, >mention *how* to do this. > >Anyone have any suggestions? I don't have my red book handy, but this can be set using the setsccbatch commands, if I recall correctly. Darn, I wish I hadn't left it at work. Setting the port is a bit messy, because it requires an exitserver and after you set it, it "doesn't listen" to the port that was sending the program to change the port. Usually you need to send an EOF (ctrl-D, from the serial port) from the new device. It is similar to setting the speed from 9600 to 19200 bps and back again from the serial port. Send the program to change the speed, then change the speed of your comm program and ctrl-D to end the program. If you send anything after the line of code that changes the speed, you get gibberish and the printer responds with an error and "ingnoring until end of file." Also, if you are leaving the Mac connected to the printer, you may need to switch both dip 1 and 2. The NTX sees the connector for appletalk as a serial connector as well, and will lock on to it if the mac remains connected and ignore the 25-pin RS-232 port. Good Luck, -Brian Dall dall@plains.NoDak.edu
rickc@pogo.WV.TEK.COM (Rick Clements) (08/09/90)
In article <5431@plains.UUCP> dall@plains.UUCP (Brian Dall) writes: }I don't have my red book handy, but this can be set using the setsccbatch }commands, if I recall correctly. Darn, I wish I hadn't left it at work. }Setting the port is a bit messy, because it requires an exitserver and }after you set it, it "doesn't listen" to the port that was sending the }program to change the port. Usually you need to send an EOF (ctrl-D, from }the serial port) from the new device. It is similar to setting the speed }from 9600 to 19200 bps and back again from the serial port. Send the }program to change the speed, then change the speed of your comm program }and ctrl-D to end the program. If you send anything after the line of }code that changes the speed, you get gibberish and the printer responds }with an error and "ingnoring until end of file." setsccbatch doesn't change the port you are using. It will change the parameters for a port you're not using. (Ex. you can set the serial parameters from the parallel port.) It doesn't require any special handling of EOF. The red book says the change in parameters don't take effect until it sees an EOF. I have played enough with the LaserWriter to know it behaves this way. I think it flushes its transmit buffer before it changes the parameters also. I don't know of any way to over ride the switch settings. But, I don't worry about it because the printer I use takes data from all three ports simultaneously. -- Rick Clements (RickC@pogo.WV.TEK.COM)
woody@chinacat.Unicom.COM (Woody Baker @ Eagle Signal) (08/09/90)
In article <1990Aug7.225900.22721@sun.soe.clarkson.edu>, whiteaj@clutx.clarkson.edu (Andrew White) writes: > I am using both a Mac and an IBM AT with my LaserWriter IINTX, and the > can be set by "downloading a PostScript program". I take that to mean > that PostScript can set the switches. The manual does not, however, Don Lancaster published a note in a fairly recent computer shopper, to the effect that if you hook a serial port up, and an apple talk port up (one on the 25 pin channel), the laser would work on whichever became active. That is, you could send a job over the serial, and if Apple talk was not working at the time i.e. it was idle, the laser would latch onto the serial port until that job was done. This means that you have to do absolutly nothing. Don freely publishes his phone number in the Computer Shopper (or has been, until Ziff Davis bought it, and started messing around with him.8(:::: ) his number is 602-428-4073. He can tell you how to do it. He feilds 60-80 calls a day, and is always helpful. As far as changing it, there is a command sethardwareiomode. 2 is for appletalk, 0 is for 232, 2 sethardwareiomode. This has to be changed via an exit from the serverloop. Cheers Woody
jj1h+@andrew.cmu.edu (Joseph Jackson) (08/10/90)
Excerpts from netnews.comp.lang.postscript: 8-Aug-90 Re: Help: Overriding DIPS o.. Rick Clements@pogo.WV.TE (1520) > setsccbatch doesn't change the port you are using. It will change the parameters for a port you're not using. (Ex. you can set the serial > parameters from the parallel port.) I have code which changes the serial port's baud rate. I send it to the printer via the said serial port and it works quite nicely. It confuses my spooler software since there is some amount of page count discussion after every job and it occurs at the wrong speed, but that's nothing that a spooler restart won't fix. Joe Jackson Distributed Workstation Services Carnegie Mellon University Internet: jj1h+@andrew.cmu.edu Bitnet: jj1h+@ANDREW AT&Tnet: (412) 268-8799