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3.2 Functions
Chapter 3 Functions
Decimal SUBtract
Decimal subtract without borrow
[ Syntax ]
DSUB.size src,dest
[ Flag Change ]
[ Description Example ]
[ Related Instructions ] DADC,DADD,DSBB
[ Function ]
[ Selectable src/dest ]
DSUB DSUB
DSUB.B #3,R0L
DSUB.W R1,R0
B , W
[ Operation ]
dest dest – src
src dest
R0L/R0 R0H/R1 R1L/R2 R1H/R3 R0L/R0 R0H/R1 R1L/R2 R1H/R3
A0/A0 A1/A1 [A0] [A1] A0/A0 A1/A1 [A0] [A1]
dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB] dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB]
dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16 dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16
dsp:20[A0] dsp:20[A1] abs20 #IMM dsp:20[A0] dsp:20[A1] abs20
R2R0 R3R1 A1A0 R2R0 R3R1 A1A0
UIOBSZDC
Flag
Conditions
S : The flag is set when the operation resulted in MSB = 1; otherwise cleared.
Z : The flag is set when the operation resulted in 0; otherwise cleared.
C : The flag is set when the operation resulted in any value equal to or greater than 0; otherwise
cleared.
• This instruction subtracts
src
from
dest
in decimal and stores the result in
dest
.
Change
[ Instruction Code/Number of Cycles ]
Page=
177
- To our customers 1
- M16C/60, M16C/20, M16C/Tiny 3
- Using This Manual 5
- M16C Family Documents 6
- Table of Contents 7
- Quick Reference-1 9
- Quick Reference-2 10
- Quick Reference-3 11
- Quick Reference by Function 11
- Quick Reference-4 12
- Quick Reference-5 13
- Quick Reference-6 14
- Quick Reference-7 15
- Quick Reference-8 16
- Quick Reference-9 17
- Quick Reference-10 18
- Chapter 1 19
- Overview 19
- Chapter 1 Overview 20
- 1.1.2 Speed performance 20
- 1.2 Address Space 21
- 1.3 Register Configuration 22
- 1.4 Flag Register (FLG) 24
- 1.4.11 Bit 15: Reserved area 25
- 1.5 Register Bank 26
- 1.7 Data Types 28
- 1.7.2 Decimal 29
- 1.7.3 Bits 30
- 1.7.4 String 33
- 1.8 Data Arrangement 34
- 1.9 Instruction Format 36
- 1.10 Vector Table 37
- 1.10.2 Variable Vector Table 38
- Chapter 2 39
- Addressing Modes 39
- 2.1 Addressing Modes 40
- 2.2 Guide to This Chapter 41
- Chapter 2 Addressing Modes 42
- Chapter 3 51
- Functions 51
- 3.1 Guide to This Chapter 52
- (3) Syntax 53
- Unconditional jump 56
- Absolute value 57
- Add with carry 58
- ADCF ADCF 59
- Add without carry 60
- ADJNZ ADJNZ 62
- Logically AND 63
- BAND BAND 65
- Clear bit 66
- Bit Move Condition 67
- Logically AND inverted bits 68
- BNOR BNOR 69
- BNOTBNOT 70
- BNTST BNTST 71
- Exclusive OR inverted bits 72
- Logically OR bits 73
- Debug interrupt 74
- BSET BSET 75
- BTST BTST 76
- BTSTC BTSTC 77
- BTSTS BTSTS 78
- Exclusive OR bits 79
- Compare 80
- DADC DADC 82
- DADD DADD 83
- Decrement 84
- Signed divide 85
- DIVU DIVU 86
- DIVX DIVX 87
- DSBB DSBB 88
- DSUB DSUB 89
- ENTER ENTER 90
- EXITD EXITD 91
- EXTS EXTS 92
- Clear flag register bit 93
- FSET FSET 94
- Increment 95
- Interrupt by INT instruction 96
- INTO INTO 97
- Jump on condition 98
- Unconditional jump 99
- JMPI JMPI 100
- JMPS JMPS 101
- Subroutine call 102
- Indirect subroutine call 103
- JSRS JSRS 104
- Transfer to control register 105
- LDCTX LDCTX 106
- Chapter 3 Functions 107
- LoaD from EXtra far data area 107
- LDINTB LDINTB 108
- LDIPL LDIPL 109
- Transfer 110
- Chapter 3 Functions 111
- MOVA MOVA 112
- Transfer 4-bit data 113
- Signed multiply 114
- MULU MULU 115
- Two’s complement 116
- No operation 117
- Invert all bits 118
- ________ 118
- Logically OR 119
- Restore register/memory 121
- POPC POPC 122
- POPM POPM 123
- PUSH PUSH 124
- PUSHA PUSHA 125
- PUSHC PUSHC 126
- PUSHM PUSHM 127
- REIT REIT 128
- RMPA RMPA 129
- ROLC ROLC 130
- RORC RORC 131
- Return from subroutine 133
- Subtract with borrow 134
- SBJNZ SBJNZ 135
- Shift arithmetic 136
- Shift logical 137
- SMOVB SMOVB 138
- SMOVF SMOVF 139
- SSTR SSTR 140
- STore from Control register 141
- STCTX STCTX 142
- STore to EXtra far data area 143
- STNZ STNZ 144
- Conditional transfer 145
- STZX STZX 146
- Subtract without borrow 147
- UNDefined instruction 150
- WAIT WAIT 151
- XCHG XCHG 152
- Exclusive OR 153
- Chapter 4 155
- 4.1 Guide to This Chapter 156
- Chapter 4 Instruction Code 157
- (1) Mnemonic 157
- (2) Syntax 157
- (3) Instruction code 157
- (4) Table of cycles 157
- (1) ABS.size dest 158
- (1) ADC.size #IMM, dest 158
- (2) ADC.size src, dest 159
- (1) ADCF.size dest 160
- (1) ADD.size:G #IMM, dest 160
- (2) ADD.size:Q #IMM, dest 161
- (3) ADD.B:S #IMM8, dest 162
- (4) ADD.size:G src, dest 163
- (6) ADD.size:G #IMM, SP 164
- (5) ADD.B:S src, R0L/R0H 164
- (7) ADD.size:Q #IMM, SP 165
- (1) AND.size:G #IMM, dest 167
- (2) AND.B:S #IMM8, dest 167
- (3) AND.size:G src, dest 168
- (4) AND.B:S src, R0L/R0H 169
- (1) BAND src 170
- (1) BCLR:G dest 170
- (2) BCLR:S bit, base:11[SB] 171
- (1) BNAND src 173
- (1) BNOR src 174
- (1) BNOT:G dest 174
- (2) BNOT:S bit, base:11[SB] 175
- (1) BNTST src 175
- (1) BNXOR src 176
- (1) BOR src 176
- (1) BSET:G dest 177
- (2) BSET:S bit, base:11[SB] 178
- (1) BTST:G src 178
- (2) BTST:S bit, base:11[SB] 179
- (1) BTSTC dest 179
- (1) BTSTS dest 180
- (1) BXOR src 180
- (1) CMP.size:G #IMM, dest 181
- (2) CMP.size:Q #IMM, dest 182
- (3) CMP.B:S #IMM8, dest 183
- (4) CMP.size:G src, dest 184
- (5) CMP.B:S src, R0L/R0H 185
- (1) DADC.B #IMM8, R0L 185
- (2) DADC.W #IMM16, R0 186
- (3) DADC.B R0H, R0L 186
- (4) DADC.W R1, R0 187
- (1) DADD.B #IMM8, R0L 187
- (2) DADD.W #IMM16, R0 188
- (3) DADD.B R0H, R0L 188
- (4) DADD.W R1, R0 189
- (1) DEC.B dest 189
- (2) DEC.W dest 190
- (1) DIV.size #IMM 190
- (2) DIV.size src 191
- (1) DIVU.size #IMM 191
- (2) DIVU.size src 192
- (1) DIVX.size #IMM 192
- (2) DIVX.size src 193
- (1) DSBB.B #IMM8, R0L 193
- (2) DSBB.W #IMM16, R0 194
- (3) DSBB.B R0H, R0L 194
- (4) DSBB.W R1, R0 195
- (1) DSUB.B #IMM8, R0L 195
- (2) DSUB.W #IMM16, R0 196
- (3) DSUB.B R0H, R0L 196
- (4) DSUB.W R1, R0 197
- (1) ENTER #IMM8 197
- (1) EXITD 198
- (1) EXTS.B dest 198
- (2) EXTS.W R0 199
- (1) FCLR dest 199
- (1) FSET dest 200
- (1) INC.B dest 200
- (2) INC.W dest 201
- (1) INT #IMM 201
- (1) INTO 202
- (1) JMP.S label 203
- (2) JMP.B label 204
- (3) JMP.W label 204
- (1) JMPI.W src 205
- (4) JMP.A label 205
- (2) JMPI.A src 206
- (1) JMPS #IMM8 206
- (1) JSR.W label 207
- (2) JSR.A label 207
- (1) JSRI.W src 208
- (2) JSRI.A src 208
- (1) JSRS #IMM8 209
- (1) LDC #IMM16, dest 209
- (2) LDC src, dest 210
- (1) LDCTX abs16, abs20 210
- (1) LDE.size abs20, dest 211
- (2) LDE.size dsp:20[A0], dest 211
- (3) LDE.size [A1A0], dest 212
- (1) LDINTB #IMM 212
- (1) LDIPL #IMM 213
- (1) MOV.size:G #IMM, dest 213
- (2) MOV.size:Q #IMM, dest 214
- (3) MOV.B:S #IMM8, dest 215
- (4) MOV.size:S #IMM, dest 216
- (5) MOV.B:Z #0, dest 216
- (6) MOV.size:G src, dest 217
- (7) MOV.B:S src, dest 218
- (8) MOV.B:S R0L/R0H, dest 218
- (9) MOV.B:S src, R0L/R0H 219
- (1) MOVA src, dest 220
- R0L, dest 221
- (1) MUL.size #IMM, dest 223
- (2) MUL.size src, dest 224
- (1) MULU.size #IMM, dest 225
- (2) MULU.size src, dest 226
- (1) NEG.size dest 227
- (2) NOT.B:S dest 228
- (1) NOT.size:G dest 228
- (1) OR.size:G #IMM, dest 229
- (2) OR.B:S #IMM8, dest 229
- (3) OR.size:G src, dest 230
- (4) OR.B:S src, R0L/R0H 231
- (1) POP.size:G dest 231
- (2) POP.B:S dest 232
- (3) POP.W:S dest 232
- (1) POPC dest 233
- (1) POPM dest 233
- (1) PUSH.size:G #IMM 234
- (2) PUSH.size:G src 234
- (3) PUSH.B:S src 235
- (4) PUSH.W:S src 235
- (1 ) PUSHA src 236
- (1) PUSHC src 236
- (1) PUSHM src 237
- (1) REIT 237
- (1) RMPA.size 238
- (1) ROLC.size dest 238
- (1) RORC.size dest 239
- (1) ROT.size #IMM, dest 240
- (2) ROT.size R1H, dest 241
- (1) SBB.size #IMM, dest 242
- (2) SBB.size src, dest 243
- (1) SHA.size #IMM, dest 245
- (2) SHA.size R1H, dest 246
- (3) SHA.L #IMM, dest 246
- (4) SHA.L R1H, dest 247
- (1) SHL.size #IMM, dest 248
- (2) SHL.size R1H, dest 249
- (3) SHL.L #IMM, dest 249
- (4) SHL.L R1H, dest 250
- (1) SMOVB.size 250
- (1) SMOVF.size 251
- (1) SSTR.size 251
- (1) STC src, dest 252
- (2) STC PC, dest 252
- (1) STE.size src, abs20 253
- (1) STCTX abs16, abs20 253
- (2) STE.size src, dsp:20[A0] 254
- (3) STE.size src, [A1A0] 254
- (1) STNZ #IMM8, dest 255
- (1) STZ #IMM8, dest 255
- (1) STZX #IMM81, #IMM82, dest 256
- (1) SUB.size:G #IMM, dest 256
- (2) SUB.B:S #IMM8, dest 257
- (3) SUB.size:G src, dest 258
- (4) SUB.B:S src, R0L/R0H 259
- (1) TST.size #IMM, dest 259
- (2) TST.size src, dest 260
- (1) WAIT 261
- (1) XCHG.size src, dest 262
- (1) XOR.size #IMM, dest 263
- (2) XOR.size src, dest 264
- Chapter 5 265
- Interrupt 265
- Chapter 5 Interrupt 267
- 5.1.2 Software Interrupts 267
- ____________ 268
- 5.2 Interrupt Control 269
- 5.3 Interrupt Sequence 272
- 5.3.3 Saving Registers 274
- 5.5 Interrupt Priority 277
- 5.6 Multiple Interrupts 278
- 5.7.1 Reading address 0000016 280
- 5.7.2 Setting the SP 280
- Chapter 6 283
- Calculation Number of Cycles 283
- Calculation number of cycles 285
- Q & A 289
- Q&A-2 290
- Q&A-3 291
- Q&A-4 292
- Q&A-5 293
- Q&A-6 294
- Glossary 295
- Glossary-2 296
- Glossary-3 297
- Glossary-4 298
- Table of symbols 299
- Symbol-2 300
- REVISION HISTORY 303
- Software Manual 308
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