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AMD-K5 Processor Technical Reference Manual 18524C/0—Nov1996
cache tags. The AMD-K5 and Pentium processors both support inquire cycles.
• Internal Snooping: These snoops are initiated by the processor (rather than sys-
tem logic) during certain types of cache accesses. Both the AMD-K5 and Pen-
tium microprocessors support this type of internal snooping for the purpose of
detecting self-modifying code. See page 2-22 for details.
• Bus Watch: Some caching devices watch their address and data bus continu-
ously while they are held off the bus. They compare every address driven by
another bus master with their internal cache tags, and they may also be able to
update their cached lines during writebacks to memory by another bus master.
Neither the AMD-K5 nor Pentium microprocessors support bus watching.
■ Cold and Warm Reset—The terms cold or hard reset and warm or soft reset are
commonly used to mean three related but different things, and the terms are
therefore avoided. A cold or hard reset typically refers to the assertion of RESET
at power-up, but warm or soft reset can refer either to the assertion of RESET
after power-up or to the assertion of INIT.
■ System Logic—Any logic outside the processor, including a core-logic chipset,
another bus master, or separate controllers for L2 cache, memory, interrupts,
DMA, communications, video, bus bridging, bus arbitration, or any other system
function.
References
Abel, Peter. IBM PC Assembly Language and Programming. Englewood Cliffs: Prentice
Hall, 1995.
Abramovici, Miron; Melvin A. Breuer; and Arthur D. Friedman. Digital Systems Test-
ing and Testable Design. New York: IEEE Press, 1990.
Agarwal, Rakesh. 80x86 Architecture & Programming. Vols. I and II. Englewood Cliffs:
Prentice-Hall, 1991.
Alexandridis, Nikitas. Design of Microprocessor-Based Systems. Englewood Cliffs: Pren-
tice-Hall, 1993.
Anderson, Don, and Tom Shanley. Pentium Processor System Architecture. Reading:
Addison-Wesley, 1995.
Barkakati, Nabajyoti, and Randall Hyde. Microsoft Macro Assembler Bible. Carmel:
Sams, 1992.
Brey, Barry B. The Intel 32-Bit Microprocessors. Englewood Cliffs: Prentice Hall, 1995.
Brown, Ralf, and Jim Kyle. PC Interrupts, A Programmer’s Reference to BIOS, DOS, and
Third-Party Calls. Reading: Addison-Wesley, 1994. For an updated version on the
Internet, ftp to OAKOAKLA NDEDU and get file PUBMSDOS INFOINTERZIP.
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