Motorola MPC5200 - Manual (Page 17)

KwikNet MPC5200 FEC Device Driver KADAK 11
The base vector for the block of interrupt vectors within the AMX Vector Table is
specified by you in your AMX Target Configuration Module. Use the AMX
Configuration Manager to edit your Target Parameter File and enter your definitions on
the
Exceptions property page. Note that a Warning will always be displayed indicating that
the three MPC5200 exceptions share a common, overlapping region of the AMX Vector
Table. The warning can be safely ignored.
The MPC5200 FEC device driver provides support for two interrupt sources: the FEC
channel and the BestComm FEC subsystem. Each of these interrupt sources is assigned
to a specific vector in the AMX Vector Table.
If the " First vector number " for the external interrupt exception is 0, then the AMX vector
number for the FEC interrupt will be 41=0+41.
If the " First vector number " for the critical interrupt exception is 0, then the AMX vector
number for the BestComm FEC interrupt will be 71=0+68+3 where 68 is the offset of the
16 AMX vectors reserved for the BestComm DMA Engine and 3 is the BestComm task
number of the BestComm Ethernet RX task.
These AMX vector numbers are used as the KwikNet IRQ Identifiers in the device driver
parameters specified in the data sheet in Appendix A.