Description

This article is from the Apple II GNO FAQ, by Devin Reade with numerous contributions by others.

8.15: Why do I get errors when trying to access the (modem/serial) port?

    A#8.15:	This is usually caused by serial port configuration problems.
Common symptoms may be:
	% copycat .ttyco .ttya
	Error opening tty .ttya, aborting.
or
	% /usr/sbin/getty 8bit.38400 .ttya
	getty: .ttya: I/O error

The first thing to check is that the following GNO serial port
drivers exist:
	/dev/modem
	/dev/printer

Next, ensure the following two lines are in your /etc/tty.config
file, and that they are uncommented:
	modem		2	.ttya
	printer		1	.ttyb

Finally, ensure that SIM (the Serial Interrupt Manager) is present
and active.  This is an init in your system.setup directory:
	*/system/system.setup/sim

Remember to reboot your system if you've made any changes in
or to comply with the above requirements.
    

 

Continue to:

• prev: 8.14: How do I use rz/sz?
• Index
• next: 9.1: What programs/utilities should I have to port UNIX source code to GNO?

Share and Enjoy

Tags

pc, hardware, Apple II, Apple ][ or Apple //, apple, gno, unix