Dflex-2 ISA Serial I/O Lynx Installation

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Title: Dflex-2 ISA Serial I/O Lynx Installation
Keywords: DFLEX LYNX
Date: Nov 12/94
Author: KAM
KDB: kdb-069
Dist: External

This tech note describes how to install a DFlex 2 into a Lynx OS
system. This procedure involves no extra drivers and only requires
that your Lynx OS system has the following...

1/ Two extra IRQ's available, one for each com port, the ttydriver
can't share interrupts.

2/ Two consecutive port addresses available, ie 0x200 and 0x208.

3/ That your computer is ISA bus compatable.

To install a DFlex under Lynx OS follow the procedure below.
=============================================================================
PROCEDURE
---------

1/ If you require logins on these ports then, start by editing (vi) the
file /etc/ttys. Here we add two new entries, one for each com port...

example /dev/com3:1:default:wyse50/bin/login
/dev/com4:1:default:wyse50/bin/login

1 = login on
0 = no login

2/ Now edit the file /sys/lynx.os/com.cfg. Here you will find a list of
Device driver and Node name entries. com1 and com2 will in use all others
com3 to com8 will be commented out. Uncomment the entry for com3 and com4.

example

D:com1:com1:: /* this is the device name entry.
N:com1:0:: /* this is a referance to an entry in the
.. etc/nodetab file.
..
#D:com8:com8:: /* other entries commented out.
#N:com8:0::

3/ Edit the file /sys/devices/ttyinfo.c, here we define the port
addresses and IRQ's. See the portion on the file below as an example.
This example uses com3, 0x200, Irq5 and com4, 0x208, Irq10.


/*
General macro for defining COM port structures
*/


COM(com1, 0x3F8, 4);
COM(com2, 0x2F8, 3);
COM(com3, 0x200, 5);
COM(com4, 0x208, 10);

COM(com5, 0x2F0, 4);
COM(com6, 0x2E8, 5);
COM(com7, 0x2E0, 9);
COM(com8, 0x260, 3);


Dflex under Lynx continued...

4/ Remain in the /sys/devices directory and run make install by typing
"make install".

5/ Now change to the directory /sys/lynx.os and run make install by
typing "make install". This will rebuild the kernal as well as update
the /etc/notetab file with the new entries for com3 and com4.

6/ Now change directory to /dev and run "mknod -a" , this will read the
file /etc/nodetab and will build inodes for com3 and com4 in the /dev
directory.

7/ Now reboot to start the new Kernal.
-reboot -a for multi yser mode.
-reboot -h for to halt system.
-reboot for single user.