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18524C/0—Nov1996 AMD-K5 Processor Technical Reference Manual
Appendix A
Compatibility With the
Pentium and 486 Processors
The AMD-K5 processor is compatible with the existing Pen-
tium-class hardware and software infrastructure, including
chipsets, motherboards, operating systems, and applications
software. In particular, the following AMD-K5 processor fea-
tures are compatible with the Pentium processor:
■ Package and pinout
■ Electrical interface (including bus cycles, AC and DC
parameters, interrupt handling, power saving, etc.)
■ Instruction set, programming model, memory management,
etc.
Because the AMD-K5 processor takes a different approach to
implementing the x86 architecture, there are a few subtle dif-
ferences between the Pentium and AMD-K5 processors. This
appendix describes these differences. (For the most current
list of differences, see the Comparison of the AMD-K5 and Pen-
tium Processors application note, order# 20025.)
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