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BIOS Configuration
3-31
3
3
Bus Release
This option is used to select the method that the EPC-9 uses to release the VMEbus
for other bus masters to use. Selecting “ ROR” (Release on Request) allows the EPC-
9 to perform better since it releases the VMEbus only if another bus master requests
the bus. Selecting “ RONR” (Release on No Request) causes the EPC-9 to release the
VMEbus when its current bus access has completed. This has the effect of increasing
the performance of other bus masters. Selecting “ RWD” (Release When Done)
causes the EPC-9 to behave the same as RONR except it does not delay 50ns before
attempting to regain control of the bus. The default is “ROR (VME) ”.
Unique Logical Address
This option is used to select the ULA for the EPC-9. This logical address is used to
uniquely identify and access the EPC-9 in a VXI system. The default is ULA “0 ”.
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