Apple Power Macintosh 7300 series - PC Compatibility Card - Manual (Page 87)

Configuration problems
I can’t assign a COM port to a Macintosh serial port.
COM ports cannot be assigned to Macintosh serial ports that are in use by an
application or network software.
If you assign a COM port to a Macintosh serial port, the serial port cannot be
used by the Mac OS until you unassign the COM port.
When I try to use my Mac OS communications software, I get an error that says the
selected port is in use.
Your Mac OS communications software may be trying to use a port that is
assigned to the PC Compatibility Card. Open the PC Setup control panel and
unassign the selected port by setting it to None.
Sound problems
I can’t hear PC sounds.
PC sound may be turned off in the PC Setup control panel.
If you can’t hear sound from a CD, make sure that the internal audio cables
are installed according to the instructions in the chapter on installing the PC
Compatibility Card in your computer model.
The PC Compatibility Card can play sound only from the CD-ROM drive
with the lowest SCSI ID number. If you’re using another CD-ROM drive, you
won’t hear sound when you switch to the PC environment.
If you are using DOS or Windows, increase the speaker volume with the
Sound Blaster Mixerset application. To run the Mixerset application from
DOS, change to the
VIBRA16 directory, type mixerset , and press Return.
87 Troubleshooting