4 COM ports under Interactive V/386 2.0.2

[Roy Fan]

------------
I.  Hardware

	The serial port adapter I bought for $35 is called "KW-509B
asynchronous communication adapter".  It provides two RS-232C serial
ports, configurable as either COM1, COM2, COM3, or COM4 with IRQ level
of 2, 3, 4, or 5.

	Since I've already have COM1 with IRQ4 and COM2 with IRQ3 on my
386 machine, I configured the two ports as COM3 with IRQ5 and COM4 with
IRQ2.

II.  Software

	The operating system I have is Interactive V/386 2.0.2.  And the
followings are the list of files that need to be edited and their
modified contents.  The information is interpersed throughout "AT&T UNIX
V.3.2 Integrated Software Development Guide".

/etc/conf/cf.d/mdevice

	asy  Iocrwi  iHct  asy  0  3  1  4  -1

/etc/conf/init.d/asy

	00:2345:respawn:/etc/getty /dev/tty00 9600
	01:2345:respawn:/etc/getty /dev/tty01 9600
	02:2345:respawn:/etc/getty /dev/tty02 9600
	03:2345:respawn:/etc/getty /dev/tty03 9600

/etc/conf/node.d/asy

	asy  tty00  c  0
	asy  tty01  c  1
	asy  tty02  c  2
	asy  tty03  c  3
	asy  ttyd0  c  16
	asy  ttyd1  c  17
	asy  ttyd2  c  18
	asy  ttyd3  c  19

/etc/conf/sdevice.d/asy

	asy  Y  1  7  1  4  3f8  3ff  0  0
	asy  Y  1  7  1  3  2f8  2ff  0  0
	asy  Y  1  7  1  5  3e8  3ef  0  0
	asy  Y  1  7  1  9  2e8  2ef  0  0

Then execute 'kconfig' as 'root' to have 4 COM ports available for
logins.

Roy Fan
University of California    fan at cs.ucla.edu
Los Angeles