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Explicitly list the i/o addresses of the serial ports.

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Prompted by docs/12343, in which people seemed to get a little confused.
The original text in the file said:

[...]
# By default we use COM1 as our serial console port *if* we're going to use
# a serial port as our console at all.  (0x3E8 = COM2)
#
#BOOT_COMCONSOLE_PORT= 0x3F8
[...]

From what I can make out, some people have assumed that means that if
they just uncomment the BOOT_COMCONSOLE_PORT then it will use COM2:
These same people then assume that "0x3F8" on that line is a typo for
"0x3E8".

What it actually means is that if you uncomment the line then the default
stays as "Ox3F8" (COM1:), and that you have to uncomment the line, *and*
change the value of the variable in order to use COM2:.

So I've made that a little bit clearer.  I've also listed the hex values
for COM1: thru COM4:, snarfed from sys/isa/isareg.h.

PR:             docs/12343
Submitted by:   Bill Grunfelder <wjgrun@dippy.cyberwar.com>
This commit is contained in:
Nik Clayton 1999-07-28 20:28:54 +00:00
parent ed4e46bdce
commit f3fd3a0091
3 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
etc/defaults/make.conf
View File

@ -1,4 +1,4 @@
# $Id: make.conf,v 1.80 1999/06/01 02:55:42 billf Exp $
# $Id: make.conf,v 1.81 1999/06/04 03:17:04 billf Exp $
#
# This file, if present, will be read by make (see /usr/share/mk/sys.mk).
# It allows you to override macro definitions to make without changing
@ -76,7 +76,9 @@
# serial port in addition to or instead of the keyboard/video console.
#
# By default we use COM1 as our serial console port *if* we're going to use
# a serial port as our console at all. (0x3E8 = COM2)
# a serial port as our console at all. Alter as necessary.
#
# COM1: = 0x3F8, COM2: = 0x2F8, COM3: = 0x3E8, COM4: = 0x2E8
#
#BOOT_COMCONSOLE_PORT= 0x3F8
#

6
etc/make.conf
View File

@ -1,4 +1,4 @@
# $Id: make.conf,v 1.80 1999/06/01 02:55:42 billf Exp $
# $Id: make.conf,v 1.81 1999/06/04 03:17:04 billf Exp $
#
# This file, if present, will be read by make (see /usr/share/mk/sys.mk).
# It allows you to override macro definitions to make without changing
@ -76,7 +76,9 @@
# serial port in addition to or instead of the keyboard/video console.
#
# By default we use COM1 as our serial console port *if* we're going to use
# a serial port as our console at all. (0x3E8 = COM2)
# a serial port as our console at all. Alter as necessary.
#
# COM1: = 0x3F8, COM2: = 0x2F8, COM3: = 0x3E8, COM4: = 0x2E8
#
#BOOT_COMCONSOLE_PORT= 0x3F8
#

6
share/examples/etc/make.conf
View File

@ -1,4 +1,4 @@
# $Id: make.conf,v 1.80 1999/06/01 02:55:42 billf Exp $
# $Id: make.conf,v 1.81 1999/06/04 03:17:04 billf Exp $
#
# This file, if present, will be read by make (see /usr/share/mk/sys.mk).
# It allows you to override macro definitions to make without changing
@ -76,7 +76,9 @@
# serial port in addition to or instead of the keyboard/video console.
#
# By default we use COM1 as our serial console port *if* we're going to use
# a serial port as our console at all. (0x3E8 = COM2)
# a serial port as our console at all. Alter as necessary.
#
# COM1: = 0x3F8, COM2: = 0x2F8, COM3: = 0x3E8, COM4: = 0x2E8
#
#BOOT_COMCONSOLE_PORT= 0x3F8
#