AMD AMD5K86 - Appendix A; Compatibility With the Pentium and 486 Processors

18524B/O-Mar1996
AMD~
AMD5f1J6 Processor Technical Reference Manual
Appendix A
Compatibility With the
Pentium and 486 Processors
The AMDS
K
86 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 AMDS
K
86 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 AMDS
K
86 processor takes a different approach to
implementing the x86 architecture, there are a few subtle dif-
ferences between the Pentium and AMDS
K
86 processors. This
appendix describes these differences.
A-I