A.4 Memory Management; A.4.1 Speculative Tlb Refills; Type Of Instruction - AMD K5 Technical Reference Manual

18524C/0—Nov1996
A.4 Memory Management
A.4.1 Speculative TLB Refills
A.4.2 Page Fault Encountered by a Load/Store Type of Instruction
Memory Management
The Pentium processor performs speculative TLB refills
(including setting the accessed bit) for code prefetches. This
may result in the accessed bit being set for a page that is not
actually used. The AMD-K5 processor does not perform specu-
lative TLB refills.
On a read page fault encountered by a load/op/store type of
instruction, the error code reported by a 486 processor indi-
cates a read operation, whereas the Pentium processor
indicates a write operation. The AMD-K5 processor reports the
same error code as the 486 processor.
AMD-K5 Processor Technical Reference Manual
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