AMD AMD5K86 - Memory Management; Speculative TLB Refills

AMD~
18524B/O-Mar1996
AMDSJ!16 Processor Technical Reference Manual
A.4 Memory Management
A.4.1
A.4.2
Speculative TLI Refills
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 AMD5
K
86 processor does not perform spec-
ulative TLB refills.
Page Fault Encountered by a Load/Store Type of Instruction
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 indi-
cates a write operation. The AMD5
K
86 processor reports the
same error code as the 486 processor.
Memory Management
A-11