Filter
Top Products
PCI Configuration Registers
A-11
Register Definitions
A.1.20 CardBus CIS Pointer (@ 28h)
This register is used by those devices that want to share silicon between Card-
Bus and PCI. The field is used to point to the Card Information Structure (CIS)
for the CardBus card. On ThunderLAN this register is hardwired to a value of
10000107h which indicates that the CIS information is in expansion ROM at
image1 and offset 20.
For a detailed explanation of the CIS Pointer, refer to the 1995 PC Card Stan-
dard Electrical Specification. The subject is covered under the heading CIS
Pointer and describes the types of information provided and the organization
of this information.
0
Address Space Offset
123
272831
ROM Image
Address Space Indicator
CIS POINTER Layout