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Functional Description
MEN Mikro Elektronik GmbH
55
20A014-00 E2 – 2007-08-16
2.16.3
VMEbus Master Mapping
The PCI to VMEbus bridge uses BAR0 to access the VMEbus. BAR1 is used for
VME A32/D32 accesses. BAR2 and BAR3 are equal to BAR0 and BAR1, but every
VMEbus access is swapped. BAR4 contains swapped and non-swapped A24/D32
windows.
Table 18.
VMEbus interface BAR 0
Table 19.
VMEbus interface BAR1
Table 20.
VMEbus interface BAR2
Table 21.
VMEbus interface BAR3
Table 22.
VMEbus interface BAR4
BAR0
Size
Function
0x 0000 0000 .. 0x 00FF FFFC
16MB
VME A24 D16 (standard)
space
0x 0100 0000 .. 0x 0100 FFFC
64KB
VME A16 D16 (short) space
0x 0101 0000 .. 0x 0101 FFFC
64KB
VME A16 D32 (short) space
0x 0140 0000 .. 0x 014F FFFC
1MB
Local SRAM
0x 0180 0000 .. 0x 0180 0044
72 bytes
VME Bridge Control Registers
0x 01C0 0000
16 bytes
VME IACK space
BAR1
Size
Function
0x 0000 0000 .. 0x 1FFF FFFC
512MB
VME A32 D32 (long) space
BAR2
Size
Function
0x 0000 0000 .. 0x 00FF FFFC
16MB
VME A24 D16 (standard)
space
swapped
0x 0100 0000 .. 0x 0100 FFFC
64KB
VME A16 D16 (short) space
swapped
0x 0101 0000 .. 0x 0101 FFFC
64KB
VME A16 D32 (short) space
swapped
0x 0140 0000 .. 0x 014F FFFC
1MB
Local SRAM
0x 0180 0000 .. 0x 0180 0044
72 bytes
VME Bridge Control Registers
BAR3
Size
Function
0x 0000 0000 .. 0x 1FFF FFFC
512MB
VME A32 D32 (long) space
swapped
BAR4
Size
Function
0x 0000 0000 .. 0x 00FF FFFC
16MB
VME A24 D32 (standard)
space
0x 0100 0000 .. 0x 01FF FFFC
16MB
VME A24 D32 (standard)
space
swapped