3

Falcon ECC Memory Controller Chip Set

 

Table 3-12.

Block_A/B/C/D Configurations

 

 

 

 

 

 

 

 

 

 

ram a/b/c/d

Block Size

 

Devices Used

Technology

 

Comments

siz0-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

%000

0MB

-

 

-

-

-

 

Block Not Present

 

 

 

 

 

 

 

 

 

 

 

36

 

-

1Mx4s

4Mb

 

 

 

 

 

 

 

 

 

 

 

%001

16MB

8

 

-

1Mx18s

16Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

-

1Mx36s

4Mb/1Mb

 

SIMM/DIMM

 

 

 

 

 

 

 

 

 

%010

32MB

18

 

-

2Mx8s

16Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

144

 

-

4Mx1s

4Mb

 

 

 

 

 

 

 

 

 

 

 

%011

64MB

36

 

-

4Mx4s

16Mb

 

 

 

 

 

 

 

 

 

8

 

-

4Mx18s

64Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

-

4Mx36s

16Mb/4Mb

 

SIMM/DIMM

 

 

 

 

 

 

 

 

 

%100

128MB

18

 

-

8Mx8s

64Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

144

 

-

16Mx1s

16Mb

 

 

 

 

 

 

 

 

 

 

 

%101

256MB

36

 

-

16Mx4s

64Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

-

16Mx36s

64Mb/16Mb

 

SIMM/DIMM

 

 

 

 

 

 

 

 

 

%110

1024MB

144

 

-

64Mx1s

64Mb

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

%111

0MB

-

 

-

-

-

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

It is important that all of the ram a/b/c/d siz0-2 bits be set to accurately match the actual size of their corresponding blocks. This includes clearing them to %000 if their corresponding blocks are not present. Failure to do so will cause problems with addressing and with scrub error logging.

3-34

Computer Group Literature Center Web Site

Page 196
Image 196
Motorola MVME2300 Series manual BlockA/B/C/D Configurations, Ram a/b/c/d Block Size Devices Used Technology Comments, 0MB