Chapter 4
Troubleshooting Procedures
4-7
4.5
DSIMM Failure
At times the operating system, diagnostic program, or POST may not display a
DSIMM location (U number) as part of a memory error message. In this situation,
the only available information is a physical memory address and failing byte (or bit).
TABLE 4-4
to locate the defective DSIMM.
Each bank listed in
TABLE 4-4
(Bank 0, Bank 1, Bank 2, and Bank 3) allows enough
address space to accommodate two 16-Mbyte, two 32-Mbyte,
two 64-Mbyte, or two 128-Mbyte DSIMMs. Unused addresses are mapped out by the
memory management hardware. Regardless of the installed DSIMM capacity, the
physical memory starting address is as listed in
TABLE 4-4
.
TABLE 4-4
DSIMM Physical Memory Address
DSIMM Slot Location
Physical Memory
Address Start
Physical Memory
Address End
Bank 0
0000 0000
0fff ffff
U0701 (byte 00-15, bits 000-127)
U0601 (byte 16-31, bits 128-255)
Bank 1
1000 000
1fff ffff
U0702 (byte 00-15, bits 000-127)
U0602 (byte 16-31, bits 128-255)
Bank 2
2000 000
2fff ffff
U0703 (byte 00-15, bits 000-127)
U0603 (byte 16-31, bits 128-255)
Bank 3
3000 000
3fff ffff
U0704 (byte 00-15, bits 000-127)
U0604 (byte 16-31, bits 128-255)
Summary of Contents for Ultra 1 Series
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Page 164: ...A 4 Ultra 1 Creator Series Service Manual August 1996...
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Page 208: ...C 22 Ultra 1 Creator Series Service Manual August 1996...
Page 212: ...Glossary 4 Ultra 1 Creator Series Service Manual August 1996...