Personal Computer User Manual

Memory Maps

http://www.motorola.com/computer/literature 6-5

PCI Memory Map

Following a reset, the Hawk ASIC disables all PCI slave map decoders.

The MVME5100 is fully capable of supporting both PREP and CHRP PCI

Memory Maps with RAM size limited to 2GB.

VME Memory Map

The MVME5100 is fully capable of supporting both the PREP and the

CHRP VME Memory Maps examples with RAM size limited to 2GB.

PCI Local Bus Memory Map

The PCI memory map is controlled by the MPU/PCI bus bridge controller

portion of the Hawk ASIC and by the Universe PCI/VME bus bridge

ASIC. The Hawk and Universe devices adjust system mapping to suit a

given application via programmable map decoder registers.

No default PCI memory map exists. Resetting the system turns the PCI

map decoders off, and they must be reprogrammed in software for the

intended application.

For detailed PCI memory maps, including suggested CHRP- and PREP-

compatible memory maps, refer to the MVME5100-Series Single Board

Computer Programmer’s Reference Guide.

FEFF 0050 MSADD2 0000 0000

FEFF 0054 MSOFF2 & MSATT2 0000 0000

FEFF 0058 MSADD3 0000 0000

FEFF 005C MSOFF3 & MSATT3 0000 0000

Table 6-3. Hawk PPC Register Values for Suggested Memory

Map (Continued)

Address Register Name Register Name