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Cwd/cdq Edx, Eax, Cmpxchg8b Edx:eax

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Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet 23542A/0-September 2000 Table 12. Integer Instructions (continued) Instruction Mnemonic CMP mem8, imm8 CMP mreg16/32, imm16/32 CMP mem16/32, imm16/32 CMP mreg16/32, imm8 (signed ext.) CMP mem16/32, imm8 (signed ext.) CMPSB mem8, mem8 CMPSW mem16, mem32 CMPSD mem32, mem32 CMPXCHG mreg8, reg8 CMPXCHG mem8, reg8 CMPXCHG mreg16/32, reg16/32 CMPXCHG mem16/32, reg16/32 CMPXCHG8B EDX:EAX CMPXCHG8B mem64 CPUID CWD/CDQ EDX, EAX DAA DAS DEC EAX DEC ECX DEC EDX DEC EBX DEC ESP DEC EBP DEC ESI DEC EDI DEC mreg8 DEC mem8 DEC mreg16/32 DEC mem16/32 DIV AL, mreg8 DIV AL, mem8 DIV EAX, mreg16/32 DIV EAX, mem16/32 IDIV mreg8 First Second Byte Byte 80h 81h 81h 83h 83h A6h A7h A7h 0Fh B0h 0Fh B0h 0Fh B1h 0Fh B1h 0Fh C7h 0Fh C7h 0Fh A2h 99h 27h 2Fh 48h 49h 4Ah 4Bh 4Ch 4Dh 4Eh 4Fh FEh FEh FFh FFh F6h F6h F7h F7h F6h ModR/M Byte mm-111-xxx 11-111-xxx mm-111-xxx 11-111-xxx mm-111-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-xxx-xxx mm-xxx-xxx 11-001-xxx mm-001-xxx 11-001-xxx mm-001-xxx 11-110-xxx mm-110-xxx 11-110-xxx mm-110-xxx 11-111-xxx Decode Type short short short long long vector vector vector vector vector vector vector vector vector vector vector vector vector short short short short short short short short vector long vector long vector vector vector vector vector RISC86 Operations load, alux alu load, alu load, alu load, alu alu alu alu alu alu alu alu alu load, alux, store load, alu, store 68 Software Environment Chapter 3

Section	Page
IF YOU HAVE QUESTIONS, WE\	3
Contents	5
List of Figures	9
List of Tables	13
Revision History	17
About this Data Sheet	19
1 AMDK6™2E+ Embedded Processor	23
1.1 AMDK6™2E+ Embedded Processor Features	25
1.2 Process Technology	29
1.3 Super7™ Platform	30
2 Internal Architecture	33
2.1 Microarchitecture Overview	33
2.2 Cache, Instruction Prefetch, and Predecode Bits	38
2.3 Instruction Fetch and Decode	39
2.4 Centralized Scheduler	43
2.5 Execution Units	44
2.6 BranchPrediction Logic	47
3 Software Environment	49
3.1 Registers	49
3.2 ModelSpecific Registers (MSR)	66
3.3 Memory Management Registers	76
3.4 Paging	78
3.5 Descriptors and Gates	81
3.6 Exceptions and Interrupts	84
3.7 Instructions Supported by the AMDK6™2E+ Processor	85
4 Logic Symbol Diagram	113
5 Signal Descriptions	115
5.1 Signal Terminology	115
5.2 A20M# (Address Bit 20 Mask)	116
5.3 A[31:3] (Address Bus)	117
5.4 ADS# (Address Strobe)	118
5.5 ADSC# (Address Strobe Copy)	118
5.6 AHOLD (Address Hold)	119
5.7 AP (Address Parity)	120
5.8 APCHK# (Address Parity Check)	121
5.9 BE[7:0]# (Byte Enables)	122
5.10 BF[2:0] (Bus Frequency)	123
5.11 BOFF# (Backoff)	124
5.12 BRDY# (Burst Ready)	125
5.13 BRDYC# (Burst Ready Copy)	126
5.14 BREQ (Bus Request)	126
5.15 CACHE# (Cacheable Access)	127
5.16 CLK (Clock)	127
5.17 D/C# (Data/Code)	128
5.18 D[63:0] (Data Bus)	129
5.19 DP[7:0] (Data Parity)	130
5.20 EADS# (External Address Strobe)	131
5.21 EWBE# (External Write Buffer Empty)	132
5.22 FERR# (FloatingPoint Error)	133
5.23 FLUSH# (Cache Flush)	134
5.24 HIT# (Inquire Cycle Hit)	135
5.25 HITM# (Inquire Cycle Hit To Modified Line)	135
5.26 HLDA (Hold Acknowledge)	136
5.27 HOLD (Bus Hold Request)	137
5.28 IGNNE# (Ignore Numeric Exception)	138
5.29 INIT (Initialization)	139
5.30 INTR (Maskable Interrupt)	140
5.31 INV (Invalidation Request)	140
5.32 KEN# (Cache Enable)	141
5.33 LOCK# (Bus Lock)	142
5.34 M/IO# (Memory or I/O)	143
5.35 NA# (Next Address)	144
5.36 NMI (NonMaskable Interrupt)	145
5.37 PCD (Page Cache Disable)	146
5.38 PCHK# (Parity Check)	147
5.39 PWT (Page Writethrough)	148
5.40 RESET (Reset)	149
5.41 RSVD (Reserved)	150
5.42 SCYC (Split Cycle)	151
5.43 SMI# (System Management Interrupt)	152
5.44 SMIACT# (System Management Interrupt Active)	153
5.45 STPCLK# (Stop Clock)	154
5.46 TCK (Test Clock)	155
5.47 TDI (Test Data Input)	155
5.48 TDO (Test Data Output)	155
5.49 TMS (Test Mode Select)	156
5.50 TRST# (Test Reset)	156
5.51 VCC2DET (VCC2 Detect)	157
5.52 VCC2H/L# (VCC2 High/Low)	158
5.53 VID[4:0] (Voltage Identification)	159
5.54 W/R# (Write/Read)	160
5.55 WB/WT# (Writeback or Writethrough)	161
5.56 Pin Tables by Type	162
5.57 Bus Cycle Definitions	164
6 AMD PowerNow!™ Technology	165
6.1 Enhanced Power Management Features	165
6.2 Dynamic Core Frequency and Core Voltage Control	172
7 Bus Cycles	175
7.1 Timing Diagrams	175
7.2 Bus States	177
7.3 Memory Reads and Writes	180
7.4 I/O Read and Write	188
7.5 Inquire and Bus Arbitration Cycles	190
7.6 Special Bus Cycles	212
8 Poweron Configuration and Initialization	221
8.1 Signals Sampled During the Falling Transition of RESET	221
8.2 RESET Requirements	222
8.3 State of Processor After RESET	222
8.4 State of Processor After INIT	225
9 Cache Organization	227
9.1 MESI States in the L1 Data Cache and L2 Cache	229
9.2 Predecode Bits	230
9.3 Cache Operation	230
9.4 Cache Disabling and Flushing	233
9.5 L2 Cache Testing	235
9.6 CacheLine Fills	235
9.7 CacheLine Replacements	236
9.8 Write Allocate	237
9.9 Prefetching	242
9.10 Cache States	243
9.11 Cache Coherency	244
9.12 Writethrough and Writeback Coherency States	249
9.13 A20M# Masking of Cache Accesses	249
10 Write Merge Buffer	251
10.1 EWBE# Control	251
10.2 Memory Type Range Registers	253
10.3 Memory-Range Restrictions	255
10.4 Examples	257
11 FloatingPoint and Multimedia Execution Units	259
11.1 FloatingPoint Execution Unit	259
11.2 Multimedia and 3DNow!™ Execution Units	261
11.3 FloatingPoint and MMX™/3DNow!™ Instruction Compatibility	262
12 System Management Mode (SMM)	263
12.1 SMM Operating Mode and Default Register Values	263
12.2 SMM StateSave Area	265
12.3 SMM Revision Identifier	267
12.4 SMM Base Address	268
12.5 Halt Restart Slot	268
12.6 I/O Trap Doubleword	269
12.7 I/O Trap Restart Slot	270
12.8 Exceptions, Interrupts, and Debug in SMM	272
13 Test and Debug	273
13.1 BuiltIn SelfTest (BIST)	273
13.2 ThreeState Test Mode	274
13.3 BoundaryScan Test Access Port (TAP)	275
13.4 Cache Inhibit	285
13.5 L2 Cache and Tag Array Testing	286
13.6 Debug	290
14 Clock Control	297
14.1 Clock Control States	297
14.2 Halt State	300
14.3 Stop Grant State	300
14.4 Stop Grant Inquire State	302
14.5 EPM Stop Grant State	303
14.6 Stop Clock State	305
15 Electrical Data	307
15.1 Operating Ranges	308
15.2 Absolute Ratings	309
15.3 DC Characteristics	309
15.4 Power Dissipation	311
15.5 Power and Grounding	313
16 Signal Switching Characteristics	317
16.1 CLK Switching Characteristics	318
16.2 Clock Switching Characteristics for 100MHz Bus Operation	318
16.3 Clock Switching Characteristics for 66MHz Bus Operation	319
16.4 Valid Delay, Float, Setup, and Hold Timings	320
16.5 Output Delay Timings for 100MHz Bus Operation	320
16.6 Input Setup and Hold Timings for 100MHz Bus Operation	322
16.7 Output Delay Timings for 66MHz Bus Operation	324
16.8 Input Setup and Hold Timings for 66MHz Bus Operation	326
16.9 RESET and Test Signal Timing	328
16.10 Timing Diagrams	331
17 Thermal Design	335
17.1 Package Thermal Specifications	335
17.2 Measuring Case Temperature	339
17.3 Layout and Airflow Considerations	339
18 Pin Designations	343
18.1 Pins Designations for CPGA Package	344
18.2 Pins Designations for OBGA Package	348
19 Package Specifications	353
19.1 321Pin Staggered CPGA Package Specification	353
19.2 349Ball OBGA Package Specification	354
20 Ordering Information	355

Match case Limit results 1 per page

Software Environment

Chapter 3

AMD-K6™-2E+ Embedded Processor Data Sheet

23542A/0—September 2000

Preliminary Information

CMP mem8, imm8

80h

mm-111-xxx

short

load, alux

CMP mreg16/32, imm16/32

81h

11-111-xxx

short

alu

CMP mem16/32, imm16/32

81h

mm-111-xxx

short

load, alu

CMP mreg16/32, imm8 (signed ext.)

83h

11-111-xxx

long

load, alu

CMP mem16/32, imm8 (signed ext.)

83h

mm-111-xxx

long

load, alu

CMPSB mem8, mem8

A6h

vector

CMPSW mem16, mem32

A7h

vector

CMPSD mem32, mem32

A7h

vector

CMPXCHG mreg8, reg8

0Fh

B0h

11-xxx-xxx

vector

CMPXCHG mem8, reg8

0Fh

B0h

mm-xxx-xxx

vector

CMPXCHG mreg16/32, reg16/32

0Fh

B1h

11-xxx-xxx

vector

CMPXCHG mem16/32, reg16/32

0Fh

B1h

mm-xxx-xxx

vector

CMPXCHG8B EDX:EAX

0Fh

C7h

11-xxx-xxx

vector

CMPXCHG8B mem64

0Fh

C7h

mm-xxx-xxx

vector

CPUID

0Fh

A2h

vector

CWD/CDQ EDX, EAX

99h

vector

DAA

27h

vector

DAS

2Fh

vector

DEC EAX

48h

short

alu

DEC ECX

49h

short

alu

DEC EDX

4Ah

short

alu

DEC EBX

4Bh

short

alu

DEC ESP

4Ch

short

alu

DEC EBP

4Dh

short

alu

DEC ESI

4Eh

short

alu

DEC EDI

4Fh

short

alu

DEC mreg8

FEh

11-001-xxx

vector

DEC mem8

FEh

mm-001-xxx

long

load, alux, store

DEC mreg16/32

FFh

11-001-xxx

vector

DEC mem16/32

FFh

mm-001-xxx

long

load, alu, store

DIV AL, mreg8

F6h

11-110-xxx

vector

DIV AL, mem8

F6h

mm-110-xxx

vector

DIV EAX, mreg16/32

F7h

11-110-xxx

vector

DIV EAX, mem16/32

F7h

mm-110-xxx

vector

IDIV mreg8

F6h

11-111-xxx

vector

Table 12.

Integer Instructions (continued)

Instruction Mnemonic

First

Byte

Second

Byte

ModR/M

Byte

Decode

Type

RISC86

Operations