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Hardware Preparation and Installation
1
S3 is a four-segment slide switch whose lower three segments establish the
size of the ECC DRAM memory model (segment 4 is not used.) Refer to
the illustration and table below for specifics.
Note
As shown in the preceding table, the MVME167P Petra/MCECC
interface supports on-board ECC DRAM emulations up to
64MB. For sizes beyond 64MB, the MVME167P accommodates
memory mezzanines of the types used on previous MVME167
boards. One additional mezzanine can be plugged in to provide
up to 128MB of supplementary DRAM.
Table 1-3. Petra SDRAM Size Settings
S3
Segment 1
S3
Segment 2
S3
Segment 3
MCECC
DRAM Size
ON
ON
ON
4MB
ON
ON
OFF
8MB
ON
OFF
ON
16MB
ON
OFF
OFF
32MB
OFF
ON
ON
64MB
2734 0004
ON
OFF
32MB
(typical configuration)
4
1
PETRA SDRAM SIZE
S3
