3-28
Software Environment and Extensions
AMD-K5 Processor Technical Reference Manual
18524C/0—Nov1996
3.2.5
Hardware Configuration Register (HWCR)
The Hardware Configuration Register (HWCR) contains con-
figuration bits that control miscellaneous debugging functions.
The HWCR can be written or read with the WRMSR or
RDMSR instruction when the ECX register contains the value
83h.
For details on the HWCR, see Section 7.1 on page 7-3.
3.3
New Instructions
In addition to supporting all of the 486 processor instructions,
the AMD-K5 processor implements the following instructions:
■
CPUID
■
CMPXCHG8B
■
MOV to and from CR4
■
RDTSC
■
RDMSR
■
WRMSR
■
RSM
■
Illegal instruction (reserved opcode)
Summary of Contents for AMD-K5
Page 1: ...AMD K5 Processor Technical Reference Manual TM...
Page 10: ...x AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 24: ...1 4 Overview AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 54: ...2 30 Internal Architecture AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 116: ...4 26 Performance AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 356: ...6 44 System Design AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 380: ...7 24 Test and Debug AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 396: ...A 16 AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...
Page 406: ...I 10 Index AMD K5 Processor Technical Reference Manual 18524C 0 Nov1996...