Fujitsu FR family 32-bit microcontroller instruction manue Manual de usuario Pagina 186
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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.66 LDUB (Load Byte Data in Memory to Register)
Extends with zeros the byte data at memory address "Rj", loads to "Ri".
■ LDUB (Load Byte Data in Memory to Register)
Assembler format: LDUB @Rj, Ri
Operation: extu ((Rj)) → Ri
Flag change:
N, Z, V, and C: Unchanged
Execution cycles: b cycle(s)
Instruction format:
Example: LDUB @R2, R3
NZVC
––––
MSB LSB
00000110 Rj Ri
R2
12345678
1234 5678
xxxx xxxx
R2
R3R3
21
0000 0021
1234 5678
12345678
21
Memory Memory
Before execution After execution
Instruction bit pattern : 0000 0110 0010 0011
- FR Family 1
- INSTRUCTION MANUAL 1
- ■ Trademark 5
- ■ Organization of this manual 6
- CONTENTS 9
- Main changes in this edition 15
- CHAPTER 1 25
- FR FAMILY OVERVIEW 25
- CHAPTER 1 FR FAMILY OVERVIEW 27
- CHAPTER 2 29
- MEMORY ARCHITECTURE 29
- 2.1 FR Family Memory Space 30
- 2.1.1 Direct Address Area 31
- 2.1.2 Vector Table Area 32
- 2.2 Bit Order and Byte Order 34
- 2.3 Word Alignment 35
- CHAPTER 3 37
- REGISTER DESCRIPTIONS 37
- 3.2 General-purpose Registers 39
- ● R14 (Frame Pointer: FP) 40
- ● R15 (Stack Pointer: SP) 40
- 3.3 Dedicated Registers 41
- 3.3.1 Program Counter (PC) 42
- 3.3.2 Program Status (PS) 43
- Initial value: --00XXXXB 45
- ■ Note on PS Register 46
- Bit no 48
- 3.3.4 Return Pointer (RP) 49
- ■ Return Pointer Functions 50
- CHAPTER 4 55
- RESET AND "EIT" 55
- PROCESSING 55
- 4.1 Reset Processing 57
- ■ Vector Table Configuration 59
- ■ Saved Registers 60
- ■ Recovery from EIT handler 60
- 4.3 Interrupts 61
- 4.3.1 User Interrupts 62
- ■ How to Use User Interrupts 63
- 4.4 Exception Processing 66
- 4.5 Traps 68
- 4.5.3 Step Trace Traps 71
- 4.5.5 Coprocessor Error Trap 73
- 4.6 Priority Levels 75
- CHAPTER 5 77
- PRECAUTIONARY 77
- INFORMATION FOR THE FR 77
- FAMILY CPU 77
- 5.1 Pipeline Operation 78
- Generated Deleted 79
- 5.3 Register Hazards 80
- ■ Interlocking 81
- CHAPTER 6 87
- INSTRUCTION OVERVIEW 87
- 6.1 Instruction Formats 88
- CHAPTER 7 91
- DETAILED EXECUTION 91
- INSTRUCTIONS 91
- 10100100 i4 Ri 97
- 10100101 i4 Ri 98
- Register) 100
- 10100000 i4 Ri 101
- 10100001 i4 Ri 102
- Destination Register) 103
- 10101101 Rj Ri 104
- 10101001 i4 Ri 108
- 10000100 Rj Ri 110
- Example: AND R2, @R3 111
- 10000101 Rj Ri 112
- Example: ANDH R2, @R3 113
- 10000110 Rj Ri 114
- Example: ANDB R2, @R3 115
- 10010100 Rj Ri 117
- Example: OR R2, @R3 118
- 10010101 Rj Ri 119
- Example: ORH R2, @R3 120
- 10010110 Rj Ri 121
- Example: ORB R2, @R3 122
- 10011100 Rj Ri 124
- Example: EOR R2, @R3 125
- Data in Memory) 126
- Example: EORH R2, @R3 127
- 10011110 Rj Ri 128
- Example: EORB R2, @R3 129
- Example: BANDL #0, @R3 131
- Example: BANDH #0, @R3 133
- Example: BORL #1, @R3 135
- Example: BORH #1, @R3 137
- Example: BEORL #1, @R3 139
- Example: BEORH #1, @R3 141
- 10001000 u4 Ri 142
- 10001001 u4 Ri 143
- 7.34 MUL (Multiply Word Data) 144
- Example: MUL R2, R3 145
- 10101011 Rj Ri 146
- Example: MULU R2, R3 147
- 10111111 Rj Ri 148
- Example: MULH R2, R3 149
- 10111011 Rj Ri 150
- Example: MULUH R2, R3 151
- 100101110100 Ri 152
- 100101110101 Ri 154
- DIV0U and DIV1 x 32 156
- Example: DIV1 R2 157
- 100101110111 Ri 158
- Example: DIV2 R2 159
- 1001111101100000 160
- 1001111101110000 161
- 10110110 Rj Ri 162
- 10110100 u4 Ri 163
- "Ri" 164
- 10110010 Rj Ri 165
- 10110000 u4 Ri 166
- 10110001 u4 Ri 167
- 10111010 Rj Ri 168
- 10111001 u4 Ri 170
- 8765 43210000 0000 171
- 0005 43210000 0000 172
- 0000 00210000 0000 173
- 00000100 Rj Ri 174
- 00000000 Rj Ri 175
- 0010 Rio8 176
- 00000011 u4 Ri 177
- 000001110000 Ri 178
- 000001111000 Rs 179
- Example: LD @ R15 +, MDH 180
- 0000011110010000 181
- Example: LD @ R15 +, PS 182
- 00000101 Rj Ri 183
- 00000001 Rj Ri 184
- 0100 Rio8 185
- 00000110 Rj Ri 186
- 00000010 Rj Ri 187
- 0110 Rio8 188
- 00010100 Rj Ri 189
- 00010000 Rj Ri 190
- 0011 Rio8 191
- 00010011 u4 Ri 192
- 000101110000 Ri 193
- 000101111000 Rs 194
- 0001011110010000 195
- 00010101 Rj Ri 196
- 00010001 Rj Ri 197
- 0101 Rio8 198
- 00010110 Rj Ri 199
- 00010010 Rj Ri 200
- 0111 Rio8 201
- 8765 43218765 4321 205
- 8765 4321 205
- Status Register) 206
- FFF3 F8D5 FFF3 F8D5 207
- FFF3 F8D5 207
- 7.87 JMP (Jump) 208
- FF80 0000 FF80 0122 209
- FF80 0004 209
- 7.89 CALL (Call Subroutine) 210
- 1001011100100000 211
- 7.91 INT (Software Interrupt) 212
- Example: INT #20H 213
- 1001111100110000 214
- Example: INTE 215
- 1001011100110000 216
- Example: RETI 217
- 1110 cc rel8 219
- 7.95 JMP:D (Jump) 220
- 7.96 CALL:D (Call Subroutine) 221
- 7.97 CALL:D (Call Subroutine) 223
- 1001111100100000 225
- 1111 cc rel8 228
- 00001000 229
- 00011000 230
- Address) 231
- Example: DMOV @88H, @R13+ 232
- Example: DMOV @R13+, @54H 234
- Instruction bit pattern : 236
- Example: DMOV @R15+, @38H 238
- Example: DMOVH @88H, @R13+ 242
- Example: DMOVH @R13+, @52H 244
- 00001010 245
- 00011010 246
- Example: DMOVB @71H, @R13+ 248
- Example: DMOVB @R13+, @57H 250
- 10111100 u4 Ri 251
- 10111101 u4 Ri 252
- 100111111100 u4(n+0) 253
- CRiCRjCC(n+2) 253
- 0000000100110100 254
- (CPU register) 256
- (Coprocessor register) 256
- 8343 834C8343 834A 261
- 10000011 262
- 10010011 263
- 11111 10100 264
- 10100011 265
- 100101111000 Ri 266
- 100101111001 Ri 267
- 100101111010 Ri 268
- 100101111011 Ri 269
- 10001100 270
- Example: LDM0 (R3, R4) 271
- 10001101 272
- 10001110 274
- Example: STM0 (R2, R3) 275
- 10001111 276
- 7.133 ENTER (Enter Function) 278
- 7.134 LEAVE (Leave Function) 280
- Example: LEAVE 281
- 10001010 Rj Ri 282
- APPENDIX 285
- APPENDIX A Instruction Lists 286
- ● Symbols in Operation Column 287
- ● Format Column 288
- ● OP Column 288
- ● Cycle (CYC) Column 288
- ● FLAG Column 288
- A.2 Instruction Lists 289
- → o8=disp8 292
- → o8=disp9 >> 1 292
- → o8=disp10 >> 2 292
- → u4=udisp6 >> 2 292
- → rel8=(label9 – PC – 2)/2 294
- → rel11=(label12 – PC – 2)/2 294
- → dir=dir8 296
- → dir=dir9 >> 1 296
- → dir=dir10 >> 2 296
- → s8=s10 >> 2 297
- → u8=u10 >> 2 297
- APPENDIX B Instruction Maps 298
- B.1 Instruction Map 299
- B.2 "E" Format 300
- 32-BIT MICROCONTROLLER 313
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