RadiSys EPC-5A, Справочное руководство по аппаратному и программному обеспечению

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Chapter 4: BIOS Configuration
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Bus Release
This option is used to select the method that the EPC-5A uses to release the VMEbus
for other bus masters to use. Selecting “ROR” (Release on Request) allows the
EPC-5A to perform better since it releases the VMEbus only if another bus master
requests the bus. Selecting “RONR” (Request on No Request – also known as VXI
fair-requester mode) causes the EPC-5A to release the VMEbus when its current bus
access has completed. This has the effect of increasing the performance of other bus
masters. The default is “ROR (VME)”.
Unique Logical Address
This option is used to select the ULA for the EPC-5A. This logical address is used to
uniquely identify and access the EPC-5A in a VXI system. The default is ULA “F8”.
VME Boot Scan Range
This option is used to select the scan range when booting from VME (vROM). The
ranges are as follows:
A24SD searches from FF000000h - FFF00000h on 100000h boundaries
A24SD searches from
00000000h - 00F00000h
on 100000h boundaries
A32SD searches from
00000000h - FFF00000h
on 100000h boundaries
Slave Memory Offset
This option is used to select the slave memory of the EPC-5A. Possible selections are:
18000000h (A32)
19000000h (A32)
1A000000h (A32)
1B000000h (A32)
1C000000h (A32)
1D000000h (A32)
1E000000h (A32)
1F000000h (A32)
000000h (A24)
400000h (A24)
800000h (A24)
C00000h (A24)
disabled (default)