User manual

Chapter 3: Software Installation – SCO Unix 3-23
Echo User's Manual, ver. 0.00
Where:
[COM]
This parameter allows you to assign a
COM to the serial adapter. There are
four available COM assignments
under SCO Unix.:
0 = COM1 1 = COM2
2 = COM3 3 = COM4
Note:
COM refers to a serial board and
not a specific port. There is no
relation between COM1, COM2
under DOS and COM under SCO
Unix
[Board type]
The style of serial adapter. This tells
the SCO Unix serial driver what to
expect from the hardware.
[# of ports]
The number of ports found on the
serial adapter.
[IRQ]
The IRQ setting for the adapter.
[Minor #]
Each COM has a different minor
number.
Example:
COM1 0 is the minor number
COM2 8 is the minor number
COM3 16 is the minor number
COM4 24 is the minor number
Note:
These numbers vary according to the
values in your file
/usr/lib/mkdev/perms/SER
[Port address]
Is the starting I/O address (hex) for
the adapter
[Status port address]
Is the I/O address (hex) for the status
port of the adapter
[Bus width]
[Modem control register]
The location of the modem control
register bit on the UART