PEB-4720 Main Board
53
FIX COM PORT Tools Installation
At time of publication, there is a odd configuration applied to the COM5 and COM6 serial
ports after Windows XP has been installed regardless of the settings in BIOS.
Please note that this odd configuration does not exist with other Windows operating
systems, or Linux.
Basically what occurs is the physical connectors on the motherboard are re-enumerated
by Windows XP so that they are exactly swapped over. See the table below.
Therefore it may be necessary for your application programs that utilize these ports to be
aware of this anomally.
Port
Address
IRQ
Connector
BIOS
COM5
4F8
10
J43
BIOS
COM6
4E8
11
J42
XP
COM6
4E8
11
J42
XP
COM5
4F8
10
J43
We do provide a utility to fix this anomally so that after Windows XP has been installed
the port connectors will be forced to revert back to the correct enumeration.
FIX COM Port Tools Installation for Windows XP
1. Open D:\PEB-4720\FIX COM PORT
2. Double click Setup.exe.
3. Restart the system