User`s guide

LPC Bus8.2.1

On the conga-B915 the PCI Bus acts as the subtractive decoding agent. All I/O cycles that are not positively decoded are forwarded to the

PCI Bus not the LPC Bus. Only specied I/O ranges are forwarded to the LPC Bus. In the congatec Embedded BIOS the following I/O address

ranges are sent to the LPC Bus:

280 – 2FF

3F8 – 3FF

3E8 – 3EF

A00 - A0F

Parts of these ranges are not available if a Super I/O is used on the carrier board. If a Super I/O is not implemented on the carrier board

then these ranges are available for customer use. If you require additional LPC Bus resources other than those mentioned above, or more

information about this subject, contact congatec technical support for assistance.