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Board Description and Memory Maps

3.Programmable via Raven ASIC.

4.CHRP requires the starting address for the PCI memory space to be 256MB-aligned.

5.Programmable via Raven ASIC for either contiguous or spread-I/O mode.

6.The actual size of each ROM/Flash bank may vary.

7.The first Megabyte of ROM/Flash bank A appears at this range after a reset if the rom_b_rv control bit is cleared. If the rom_b_rv control bit is set then this address range maps to ROM/Flash bank B.

8.This range can be mapped to the VMEbus by programming the Universe ASIC accordingly. The map shown is the recommended setting which uses the Special PCI Slave Image and two of the four programmable PCI Slave Images.

9.The only method of generating a PCI Interrupt Acknowledge cycle (8259 IACK) is to perform a read access to the Raven’s PIACK register at 0xFEFF0030.

The following table shows the programmed values for the associated Raven MPC registers for the processor CHRP memory map.

Table 1-4. Raven MPC Register Values for CHRP Memory Map

Address

Register Name

Register Value

 

 

 

FEFF 0040

MSADD0

4000 FCFF

 

 

 

 

FEFF 0044

MSOFF0 & MSATT0

0000

00C2

 

 

 

FEFF 0048

MSADD1

FD00 FDFF

 

 

 

 

FEFF 004C

MSOFF1 & MSATT1

0300

00C2

 

 

 

FEFF 0050

MSADD2

0000 0000

 

 

 

 

FEFF 0054

MSOFF2 & MSATT2

0000

0002

 

 

 

FEFF 0058

MSADD3

FE00 FE7F

 

 

 

 

FEFF 005C

MSOFF3 & MSATT3

0200

00C0

 

 

 

 

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Motorola MVME2300 Series manual Raven MPC Register Values for Chrp Memory Map, Address Register Name Register Value