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SBB AL, imm8, SAR mem8, CL

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23542A/0-September 2000 Preliminary Information AMD-K6™-2E+ Embedded Processor Data Sheet Table 12. Integer Instructions (continued) Instruction Mnemonic ROR mreg16/32, CL ROR mem16/32, CL RSM SAHF SAR mreg8, imm8 SAR mem8, imm8 SAR mreg16/32, imm8 SAR mem16/32, imm8 SAR mreg8, 1 SAR mem8, 1 SAR mreg16/32, 1 SAR mem16/32, 1 SAR mreg8, CL SAR mem8, CL SAR mreg16/32, CL SAR mem16/32, CL SBB mreg8, reg8 SBB mem8, reg8 SBB mreg16/32, reg16/32 SBB mem16/32, reg16/32 SBB reg8, mreg8 SBB reg8, mem8 SBB reg16/32, mreg16/32 SBB reg16/32, mem16/32 SBB AL, imm8 SBB EAX, imm16/32 SBB mreg8, imm8 SBB mem8, imm8 SBB mreg16/32, imm16/32 SBB mem16/32, imm16/32 SBB mreg16/32, imm8 (signed ext.) SBB mem16/32, imm8 (signed ext.) SCASB AL, mem8 SCASW AX, mem16 SCASD EAX, mem32 First Second Byte Byte D3h D3h 0Fh AAh 9Eh C0h C0h C1h C1h D0h D0h D1h D1h D2h D2h D3h D3h 18h 18h 19h 19h 1Ah 1Ah 1Bh 1Bh 1Ch 1Dh 80h 80h 81h 81h 83h 83h AEh AFh AFh ModR/M Byte 11-001-xxx mm-001-xxx 11-111-xxx mm-111-xxx 11-111-xxx mm-111-xxx 11-111-xxx mm-111-xxx 11-111-xxx 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-xxx-xxx mm-xxx-xxx 11-011-xxx mm-011-xxx 11-011-xxx mm-011-xxx 11-011-xxx mm-011-xxx Decode Type vector vector vector vector short vector short vector short vector short vector short vector short vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector vector RISC86 Operations alux alu alux alu alux alu Chapter 3 Software Environment 77

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

Chapter 3

Software Environment

23542A/0—September 2000

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

Preliminary Information

ROR mreg16/32, CL

D3h

11-001-xxx

vector

ROR mem16/32, CL

D3h

mm-001-xxx

vector

RSM

0Fh

AAh

vector

SAHF

9Eh

vector

SAR mreg8, imm8

C0h

11-111-xxx

short

alux

SAR mem8, imm8

C0h

mm-111-xxx

vector

SAR mreg16/32, imm8

C1h

11-111-xxx

short

alu

SAR mem16/32, imm8

C1h

mm-111-xxx

vector

SAR mreg8, 1

D0h

11-111-xxx

short

alux

SAR mem8, 1

D0h

mm-111-xxx

vector

SAR mreg16/32, 1

D1h

11-111-xxx

short

alu

SAR mem16/32, 1

D1h

mm-111-xxx

vector

SAR mreg8, CL

D2h

11-111-xxx

short

alux

SAR mem8, CL

D2h

mm-111-xxx

vector

SAR mreg16/32, CL

D3h

11-111-xxx

short

alu

SAR mem16/32, CL

D3h

mm-111-xxx

vector

SBB mreg8, reg8

18h

11-xxx-xxx

vector

SBB mem8, reg8

18h

mm-xxx-xxx

vector

SBB mreg16/32, reg16/32

19h

11-xxx-xxx

vector

SBB mem16/32, reg16/32

19h

mm-xxx-xxx

vector

SBB reg8, mreg8

1Ah

11-xxx-xxx

vector

SBB reg8, mem8

1Ah

mm-xxx-xxx

vector

SBB reg16/32, mreg16/32

1Bh

11-xxx-xxx

vector

SBB reg16/32, mem16/32

1Bh

mm-xxx-xxx

vector

SBB AL, imm8

1Ch

vector

SBB EAX, imm16/32

1Dh

vector

SBB mreg8, imm8

80h

11-011-xxx

vector

SBB mem8, imm8

80h

mm-011-xxx

vector

SBB mreg16/32, imm16/32

81h

11-011-xxx

vector

SBB mem16/32, imm16/32

81h

mm-011-xxx

vector

SBB mreg16/32, imm8 (signed ext.)

83h

11-011-xxx

vector

SBB mem16/32, imm8 (signed ext.)

83h

mm-011-xxx

vector

SCASB AL, mem8

AEh

vector

SCASW AX, mem16

AFh

vector

SCASD EAX, mem32

AFh

vector

Table 12.

Integer Instructions (continued)

Instruction Mnemonic

First

Byte

Second

Byte

ModR/M

Byte

Decode

Type

RISC86

Operations