Motorola MVME2300 Series User Manual download pdf (Page 48)

1-24 Computer Group Literature Center Web Site

Board Description and Memory Maps

The register values in the table yield the following VMEbus slave map:

Falcon-Controlled System Registers

The Falcon chip set latches the states of the DRAM data lines onto the

PR_STAT1 and PR_STAT2 registers. MVME2300 series boards use these

status registers to provide the system configuration information. In

addition, the Falcon chip set performs the decode and control for an

external register port. This function is utilized by MVME2300 series

boards to provide the system control registers.

The following subsections describe these system registers in detail.

Table 1-14. VMEbus Slave Map Example

VMEbus Address

Size CHRP Map PREP Map

Range Mode

4000 0000 -

4000 0FFF

A32 U/S/P/D

D08/16/32

PCI/ISA I/O Space:

0000 1000 - 0000 1FFF

PCI/ISA I/O Space:

0000 1000 - 0000 1FFF

1000 0000 -

1FFF FFFF

A32 U/S/P/D

D08/16/32/64

RMW

256M

PCI/ISA Memory Space

(On-board DRAM)

0000 0000 - 0FFF FFFF

PCI/ISA Memory Space

(On-board DRAM)

8000 0000 - 8FFF FFFF

Table 1-15. System Register Summary

BIT # ---->

FEF80400

System Configuration Register (Upper Falcon’s PR_STAT1)

FEF80404

Memory Configuration Register (Lower Falcon’s PR_STAT1)

FEF88000

System External Cache

Control Register

FEF88300

CPU Control Register

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 281 282

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Motorola MVME2300 Series User Manual Page 48

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