Motorola MVME2400 Series Wartungshandbuch Seite 34

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1-14 Computer Group Literature Center Web Site
Board Description and Memory Maps
1
PCI Memory Maps
The PCI memory map is controlled by the PHB portion of the Hawk ASIC
and the Universe II ASIC. The PHB and the Universe II ASIC have
flexible programming Map Decoder registers to customize the system to
fit many different applications.
Default PCI Memory Map
After a reset, the PHB and the Universe II ASIC turn all the PCI slave map
decoders off. Software must program the appropriate map decoders for a
specific environment.
PCI CHRP Memory Map
The following table shows a PCI memory map of the MVME2400 series
that is CHRP-compatible from the point of view of the PCI local bus.
Table 1-7. PCI CHRP Memory Map
PCI Address Size Definition Notes
Start End
0000 0000 top_dram dram_size Onboard ECC DRAM 1
4000 0000 EFFF FFFF 3G - 256M VMEbus A32/D32 (Super/Program) 3
F000 0000 F7FF FFFF 128M VMEbus A32/D16 (Super/Program) 3
F800 0000 F8FE FFFF 16M - 64K VMEbus A24/D16 (Super/Program) 4
F8FF 0000 F8FF FFFF 64K VMEbus A16/D16 (Super/Program) 4
F900 0000 F9FE FFFF 16M - 64K VMEbus A24/D32 (Super/Data) 4
F9FF 0000 F9FF FFFF 64K VMEbus A16/D32 (Super/Data) 4
FA00 0000 FAFE FFFF 16M - 64K VMEbus A24/D16 (User/Program) 4
FAFF 0000 FAFF FFFF 64K VMEbus A16/D16 (User/Program) 4
FB00 0000 FBFE FFFF 16M - 64K VMEbus A24/D32 (User/Data) 4
FBFF 0000 FBFF FFFF 64K VMEbus A16/D32 (User/Data) 4
FC00 0000 FC03 FFFF 256K MPIC 1
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