![](http://datasheet.mmic.net.cn/370000/-PD30101_datasheet_16680756/-PD30101_10.png)
- iv -
3.3 LOAD DELAY........................................................................................................
3.4 PIPELINE OPERATION.........................................................................................
3.4.1 Add Instruction (Add rd, rs, rt)............................................................................................
3.4.2 Jump and Link Register Instruction (JALR rd, rs)...............................................................
3.4.3 Branch on Equal Instruction (BEQ rs, rt, offset).................................................................
3.4.4 Trap if Less Than Instruction (TLT rs, rt)............................................................................
3.4.5 Load Word Instruction (LW rt, offset (base))......................................................................
3.4.6 Store Word Instruction (SW rt, offset (base)).....................................................................
3.5 INTERLOCK AND EXCEPTION HANDLING.........................................................
3.5.1 Exception Conditions..........................................................................................................
3.5.2 Stall Conditions ..................................................................................................................
3.5.3 Slip Conditions ...................................................................................................................
3.5.4 Bypassing...........................................................................................................................
3.6 CODE COMPATIBILITY.........................................................................................
38
38
39
40
41
42
43
44
45
48
49
50
51
51
CHAPTER 4 MEMORY MANAGEMENT SYSTEM.............................................
4.1 TRANSLATION LOOKASIDE BUFFER (TLB) ......................................................
4.1.1 Hits and Misses..................................................................................................................
4.1.2 Multiple Hit..........................................................................................................................
4.2 ADDRESS SPACES..............................................................................................
4.2.1 Virtual Address Space........................................................................................................
4.2.2 Physical Address Space.....................................................................................................
4.2.3 Virtual-to-Physical Address Translation .............................................................................
4.2.4 32-bit Mode Address Translation .......................................................................................
4.2.5 64-bit Mode Address Translation .......................................................................................
4.2.6 Operating Modes................................................................................................................
4.3 SYSTEM CONTROL COPROCESSOR.................................................................
4.3.1 Format of a TLB Entry........................................................................................................
4.3.2 CP0 Registers....................................................................................................................
4.3.3 Virtual-to-Physical Address Translation .............................................................................
53
53
53
53
54
54
55
56
57
58
59
69
70
71
81
CHAPTER 5 EXCEPTION PROCESSING.........................................................
5.1 HOW EXCEPTION PROCESSING WORKS..........................................................
5.2 PRECISION OF EXCEPTIONS..............................................................................
5.3 EXCEPTION PROCESSING REGISTERS.............................................................
5.3.1 Context Register (4)...........................................................................................................
5.3.2 BadVAddr Register (8).......................................................................................................
5.3.3 Count Register (9)..............................................................................................................
5.3.4 Compare Register (11).......................................................................................................
5.3.5 Status Register (12) ...........................................................................................................
85
85
86
86
87
88
88
89
89