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Video Issue with OS 9, Round serial "modem port"

I have a Power Mac G3 that primarily runs Panther 10.3.9, but occasionally I like to use OS 9. Classic mode works great on it, and so does OS 9 for that matter, but...
After using OS 9 I go to the startup disk control panel and select my 10.3.9 System folder and reboot, and the computer comes up with no video. The friend who owned this computer before me has indicated he never had this problem. He was running 10.2.8 and I've wiped the hard drive and done my own installations. A PRAM reset solves the problem and OS X will then boot normally, with video, but this is a pain.
I'm using an Emachines CRT monitor connected to the VGA port on what I believe is the G3's original video card (identifies as ATY,Rage128 in Apple System Profiler, with 16MB VRAM). My friend who didn't have this problem was using a Sony LCD connected to the same video card.
Any solutions other than "reset your PRAM everytime you use OS 9" would be appreciated.

Also, is there anyway to get OS X to recognize the old round serial port. I have an old printer that I'd like to hook up to this machine, and it plays nicely in OS 9, but OS X doesn't even know it's there. The port is of the old "printer port / modem port" type, but there is only one and it's marked with the modem symbol. Strangely, Apple's spec's page doesn't say that the B&W G3 had one of these, but it's clearly on the back of my computer, and it's built in, not added on.
OS X's networking control panel also "sees" an internal modem that doens't exist on this machine. I was wondering if it might be recognizing the serial port as a modem, not knowing what else to make of it. Anybody have any ideas that would make OS X utilize this old port the way classic OS's do?

One final question. I read about B&W rev.1 and rev.2 and such. How do I know which one I have?

14" iBook G3 800, B&W PowerMac G3 350, Mac Classic II 16 :-P Mac OS X (10.3.9) System 7 Rocked!

Posted on Jul 4, 2006 1:17 PM

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Posted on Jul 4, 2006 2:18 PM

Joe,

Last question first.

http://docs.info.apple.com/article.html?artnum=58194

"Later revisions of the Power Macintosh G3 (Blue and White) provide support for dual IDE drives. They can be identified by the presence of a U bracket installed in the rear most drive bay which allows two hard drives to be mounted in that single bay."

This site has more information and a picture:

http://docs.info.apple.com/article.html?artnum=24342

For platinum G3s, this is the link:

Power Macintosh G3: Identifying The Logic Board Revision

http://docs.info.apple.com/article.html?artnum=24924

Second question, you must boot from OS 9 to use that serial port.

Jim
19 replies

Jul 5, 2006 5:52 PM in response to Grant Bennet-Alder

As a
serial-only printer, it will not be directly
available to the other Macs on your Network (but that
may not be an issue). With the Linux Printing driver,
it is available directly under Mac OS X, rather than
requiring you to use Classic to print.


Indeed, I'm printing directly from OS X with the same ease as printing to a USB printer (minus the feedback error messages). Even better, I can share it to other computers on my network as easily as a USB printer. My iBook prints to it this way no problem (as long as the G3 is turned on of course). I didn't need to install any drivers to the iBook. OS X printer sharing is pretty powerful. Of course, this is probably not anything I'll want to do under practical circumstances.

Jul 6, 2006 4:33 PM in response to Appaloosa mac man

One more tidbit: I figured that since it was suggested to use "goof-off," which is a strong solvent, as a fix for the rollers on my printer, I should look around the house for a strong solvent before I went out to buy anything. It turns out rubbing alcohol works just fine. My printer is now behaving itself perfectly, and OS X prints to it without a hitch.

Video Issue with OS 9, Round serial "modem port"

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