64
NOTE Since ECC Memory driver does not distinguish whether an error occurred in word 0 or word 1 of a
given interleave, both words (i.e. both SIMMs) have to be changed to correct a single-bit problem.
Forexample, correcting single-bit errors that are occuring in interleave 0, row 0, requires replacing
SIMMs in J36 and J40.
An additional diagram showing socket JXX numbers is on page 65.
Address Resources
Memory Address Map
The following table lists the memory address map assignments.
Memory Address Range
Description (Size)
0_00000000 - 0_0009FFFF System Board Memory (640K)
0_000A0000 - 0_000BFFFF Video Memory (128K)
0_000C0000 - 0_000C7FFF Video ROM (32K)
0_000C8000 - 0_000CFFFF SCSI ROM (32K)
0_000D0000 - 0_000DFFFF Available I/O Adapter ROM (64K)
0_000E0000 - 0_000FFFFF System BIOS ROM (128K)
0_00100000 - 0_7FFFFFFF System Board Memory (2047M)
0_80000000 - 0_AFFFFFFF Unused
0_B0000000 - 0_DFFFFFFF Typical PCI Adapter Usage
0_E0000000 - 0_FEBFFFFF Unused
0_FEC00000 - 0_FEC003FF SIO.A APIC Registers (1K)
0_FEC00400 - 0_FEC007FF I/O APIC Registers (1K)
0_FEC00800 - 0_FEDFFFFF Unused
0_FEE00000 - 0_FEE00FFF Processor APIC Registers (4K)
0_FEE01000 - 0_FFF7FFFF Unused
0_FFF80000 - 0_FFFDFFFF Reserved
0_FFFE0000 - 0_FFFFFFFF System BIOS ROM - shadow
0_FFFE0000 - F_FFFFFFFF Unused
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