BECKHOFF CB4051 - Manual (Page 53)

PnP/PCI Configuration Chapter: BIOS Settings
Beckhoff New Automation Technology CB4051 page 53
ü INT Pin 8 Assignment
Options: Auto / 3 / 4 / 5 / 7 / 9 / 10 / 11 / 12 / 14 / 15
ü Maximum Payload Size
Options: 128 / 256 / 512 / 1024 / 2048 / 4096
(Note: The Intel® 945GM and SCH US15W chipsets only support an MPL of 128B)