DATA COMMUNICATIONS APPLICATION NOTE

xr

DAN180

7

10) Run 'make modules'

11) Run 'make modules_install'

12) Run 'make install'

13) The newly created kernel image will be called ‘vmlinuz-(kernel version)-$EXTRAVERSION’ and will be

copied to ‘/boot’ directory after the previous command.

14) Edit the ‘/boot/grub/menu.1st’ file. Add another set of lines for the new kernel. If the new kernel does not

start properly, you can always boot using the existing working kernel. In the example ‘menu.1st’ file below,

‘/boot/vmlinuz-2.6.4-52’ is the original kernel image (title Linux) and ‘/boot/exar’ is the modified image (title ex-

ar).

color white/blue black/light-gray

default 0

timeout 8

gfxmenu (hd0,3)/boot/message

###Don't change this comment - YaST2 identifier: Original name: linux###

title Linux

kernel (hd0,3)/boot/vmlinuz root=/dev/hda4 vga=0x31a splash=silent desktop resume=/dev/hda3 showopts

initrd (hd0,3)/boot/initrd.orig

###Don't change this comment - YaST2 identifier: Original name: exar###

title exar

kernel (hd0,3)/boot/exar root=/dev/hda4 vga=0x31a splash=silent desktop resume=/dev/hda3 showopts

initrd (hd0,3)/boot/initrd.exar

###Don't change this comment - YaST2 identifier: Original name: floppy###

title Floppy

root (fd0)

chainloader +1

###Don't change this comment - YaST2 identifier: Original name: failsafe###

title Failsafe

kernel (hd0,3)/boot/vmlinuz root=/dev/hda4 showopts ide=nodma apm=off acpi=off vga=normal noresume nosmp noapic

maxcpus=0 3

initrd (hd0,3)/boot/initrd

###Don't change this comment - YaST2 identifier: Original name: memtest86###

title Memory Test

kernel (hd0,3)/boot/memtest.bin

15) Reboot the system and when the choice for kernels appear, select the newly created kernel.

Exar is still working on a software patch where the kernel does not require to be recompiled. Exar will advise

customers as soon as the software patch is available.

3.3

CASE 3 - PHOENIX BIOS VERSION 4.0 RELEASE 6.0 SOLUTION

This BIOS version performs a unique sequence of writes and reads at I/O locations 0x3F8, 0x2F8, 0x3E8 and

0x2E8, which are the standard COM1 through COM4 locations. This BIOS determines if serial ports (UARTs)