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📄 fat32getdirname.lst

📁 FAT32文件系统在51单片机上实现
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015F ED                MOV     A,R5
0160 F0                MOVX    @DPTR,A
0161 1F                DEC     R7
0162 80DF              SJMP    ?C0014
0164         ?C0015:
                                           ; SOURCE LINE # 38
0164 7400        R     MOV     A,#LOW temp
0166 2F                ADD     A,R7
0167 F582              MOV     DPL,A
0169 E4                CLR     A
016A 3400        R     ADDC    A,#HIGH temp
016C F583              MOV     DPH,A
016E E0                MOVX    A,@DPTR
016F FD                MOV     R5,A
0170 7400        E     MOV     A,#LOW LongFileName
0172 2F                ADD     A,R7
0173 F582              MOV     DPL,A
0175 E4                CLR     A
0176 3400        E     ADDC    A,#HIGH LongFileName
0178 F583              MOV     DPH,A
017A ED                MOV     A,R5
017B F0                MOVX    @DPTR,A
                                           ; SOURCE LINE # 39
017C 900000      R     MOV     DPTR,#n
017F EE                MOV     A,R6
0180 F0                MOVX    @DPTR,A
                                           ; SOURCE LINE # 40
0181 900000      R     MOV     DPTR,#i
0184 E0                MOVX    A,@DPTR
0185 04                INC     A
0186 F0                MOVX    @DPTR,A
                                           ; SOURCE LINE # 41
0187 E0                MOVX    A,@DPTR
0188 B4100E            CJNE    A,#010H,?C0010
                                           ; SOURCE LINE # 42
                                           ; SOURCE LINE # 43
018B 7B01              MOV     R3,#01H
018D 7A00        R     MOV     R2,#HIGH chain
018F 7900        R     MOV     R1,#LOW chain
0191 120000      E     LCALL   _FAT32ReadCluster
                                           ; SOURCE LINE # 44
0194 E4                CLR     A
0195 900000      R     MOV     DPTR,#i
0198 F0                MOVX    @DPTR,A
                                           ; SOURCE LINE # 45
                                           ; SOURCE LINE # 46
0199         ?C0010:
0199 900000      R     MOV     DPTR,#j
019C E0                MOVX    A,@DPTR
019D 14                DEC     A
019E F0                MOVX    @DPTR,A
C51 COMPILER V7.50   FAT32GETDIRNAME                                                       11/20/2006 15:50:41 PAGE 15  

019F 020000      R     LJMP    ?C0008
01A2         ?C0009:
                                           ; SOURCE LINE # 47
01A2 900000      E     MOV     DPTR,#sDIR
01A5 E0                MOVX    A,@DPTR
01A6 FB                MOV     R3,A
01A7 A3                INC     DPTR
01A8 E0                MOVX    A,@DPTR
01A9 FA                MOV     R2,A
01AA A3                INC     DPTR
01AB E0                MOVX    A,@DPTR
01AC F9                MOV     R1,A
01AD 900000      R     MOV     DPTR,#i
01B0 E0                MOVX    A,@DPTR
01B1 75F020            MOV     B,#020H
01B4 A4                MUL     AB
01B5 F582              MOV     DPL,A
01B7 85F083            MOV     DPH,B
01BA 120000      E     LCALL   ?C?CLDOPTR
01BD 6003              JZ      ?C0019
01BF B4E503            CJNE    A,#0E5H,?C0018
01C2         ?C0019:
01C2 7F03              MOV     R7,#03H
01C4 22                RET     
01C5         ?C0018:
                                           ; SOURCE LINE # 48
01C5 900000      R     MOV     DPTR,#i
01C8 E0                MOVX    A,@DPTR
01C9 75F020            MOV     B,#020H
01CC A4                MUL     AB
01CD FF                MOV     R7,A
01CE 900000      E     MOV     DPTR,#sDIR
01D1 E0                MOVX    A,@DPTR
01D2 FB                MOV     R3,A
01D3 A3                INC     DPTR
01D4 E0                MOVX    A,@DPTR
01D5 FA                MOV     R2,A
01D6 A3                INC     DPTR
01D7 E0                MOVX    A,@DPTR
01D8 2F                ADD     A,R7
01D9 F9                MOV     R1,A
01DA EA                MOV     A,R2
01DB 35F0              ADDC    A,B
01DD FA                MOV     R2,A
01DE 90000B            MOV     DPTR,#0BH
01E1 120000      E     LCALL   ?C?CLDOPTR
01E4 20E403            JB      ACC.4,$ + 6H
01E7 020000      R     LJMP    ?C0022
01EA 7F02              MOV     R7,#02H
01EC 22                RET     
                                           ; SOURCE LINE # 49
01ED         ?C0007:
                                           ; SOURCE LINE # 51
                                           ; SOURCE LINE # 53
01ED 900000      E     MOV     DPTR,#sDIR
01F0 E0                MOVX    A,@DPTR
01F1 FB                MOV     R3,A
01F2 A3                INC     DPTR
01F3 E0                MOVX    A,@DPTR
01F4 FA                MOV     R2,A
01F5 A3                INC     DPTR
01F6 E0                MOVX    A,@DPTR
C51 COMPILER V7.50   FAT32GETDIRNAME                                                       11/20/2006 15:50:41 PAGE 16  

01F7 F9                MOV     R1,A
01F8 900000      R     MOV     DPTR,#i
01FB E0                MOVX    A,@DPTR
01FC 75F020            MOV     B,#020H
01FF A4                MUL     AB
0200 F582              MOV     DPL,A
0202 85F083            MOV     DPH,B
0205 120000      E     LCALL   ?C?CLDOPTR
0208 6003              JZ      ?C0024
020A B4E503            CJNE    A,#0E5H,?C0023
020D         ?C0024:
020D 7F03              MOV     R7,#03H
020F 22                RET     
0210         ?C0023:
                                           ; SOURCE LINE # 54
0210 900000      R     MOV     DPTR,#i
0213 E0                MOVX    A,@DPTR
0214 75F020            MOV     B,#020H
0217 A4                MUL     AB
0218 FF                MOV     R7,A
0219 900000      E     MOV     DPTR,#sDIR
021C E0                MOVX    A,@DPTR
021D FB                MOV     R3,A
021E A3                INC     DPTR
021F E0                MOVX    A,@DPTR
0220 FA                MOV     R2,A
0221 A3                INC     DPTR
0222 E0                MOVX    A,@DPTR
0223 2F                ADD     A,R7
0224 F9                MOV     R1,A
0225 EA                MOV     A,R2
0226 35F0              ADDC    A,B
0228 FA                MOV     R2,A
0229 90000B            MOV     DPTR,#0BH
022C 120000      E     LCALL   ?C?CLDOPTR
022F 30E303            JNB     ACC.3,$ + 6H
0232 020000      R     LJMP    ?C0005
0235         ?C0025:
                                           ; SOURCE LINE # 55
0235 E4                CLR     A
0236 900000      R     MOV     DPTR,#j
0239 F0                MOVX    @DPTR,A
023A         ?C0026:
                                           ; SOURCE LINE # 56
023A 900000      R     MOV     DPTR,#i
023D E0                MOVX    A,@DPTR
023E 75F020            MOV     B,#020H
0241 A4                MUL     AB
0242 FF                MOV     R7,A
0243 900000      E     MOV     DPTR,#sDIR
0246 E0                MOVX    A,@DPTR
0247 FB                MOV     R3,A
0248 A3                INC     DPTR
0249 E0                MOVX    A,@DPTR
024A FA                MOV     R2,A
024B A3                INC     DPTR
024C E0                MOVX    A,@DPTR
024D 2F                ADD     A,R7
024E F9                MOV     R1,A
024F EA                MOV     A,R2
0250 35F0              ADDC    A,B
0252 FA                MOV     R2,A
C51 COMPILER V7.50   FAT32GETDIRNAME                                                       11/20/2006 15:50:41 PAGE 17  

0253 900000      R     MOV     DPTR,#j
0256 E0                MOVX    A,@DPTR
0257 FF                MOV     R7,A
0258 7C00              MOV     R4,#00H
025A 29                ADD     A,R1
025B F9                MOV     R1,A
025C EC                MOV     A,R4
025D 3A                ADDC    A,R2
025E FA                MOV     R2,A
025F 120000      E     LCALL   ?C?CLDPTR
0262 FE                MOV     R6,A
0263 7400        E     MOV     A,#LOW LongFileName
0265 2F                ADD     A,R7
0266 F582              MOV     DPL,A
0268 E4                CLR     A
0269 3400        E     ADDC    A,#HIGH LongFileName
026B F583              MOV     DPH,A
026D EE                MOV     A,R6
026E F0                MOVX    @DPTR,A
026F 900000      R     MOV     DPTR,#j
0272 E0                MOVX    A,@DPTR
0273 04                INC     A
0274 F0                MOVX    @DPTR,A
0275 E0                MOVX    A,@DPTR
0276 B40BC1            CJNE    A,#0BH,?C0026
0279         ?C0027:
                                           ; SOURCE LINE # 57
0279 900000      R     MOV     DPTR,#j
027C E0                MOVX    A,@DPTR
027D 2400        E     ADD     A,#LOW LongFileName
027F F582              MOV     DPL,A
0281 E4                CLR     A
0282 3400        E     ADDC    A,#HIGH LongFileName
0284 F583              MOV     DPH,A
0286 E4                CLR     A
0287 F0                MOVX    @DPTR,A
                                           ; SOURCE LINE # 58
0288 900000      R     MOV     DPTR,#j
028B F0                MOVX    @DPTR,A
028C         ?C0029:
                                           ; SOURCE LINE # 59
028C 900000      R     MOV     DPTR,#i
028F E0                MOVX    A,@DPTR
0290 75F020            MOV     B,#020H
0293 A4                MUL     AB
0294 FF                MOV     R7,A
0295 900000      E     MOV     DPTR,#sDIR
0298 E0                MOVX    A,@DPTR
0299 FB                MOV     R3,A
029A A3                INC     DPTR
029B E0                MOVX    A,@DPTR
029C FA                MOV     R2,A
029D A3                INC     DPTR
029E E0                MOVX    A,@DPTR
029F 2F                ADD     A,R7
02A0 F9                MOV     R1,A
02A1 EA                MOV     A,R2
02A2 35F0              ADDC    A,B
02A4 FA                MOV     R2,A
02A5 900000      R     MOV     DPTR,#j
02A8 E0                MOVX    A,@DPTR
02A9 2408              ADD     A,#08H
C51 COMPILER V7.50   FAT32GETDIRNAME                                                       11/20/2006 15:50:41 PAGE 18  

02AB FF                MOV     R7,A
02AC E4                CLR     A
02AD 33                RLC     A
02AE FE                MOV     R6,A
02AF E9                MOV     A,R1
02B0 2F                ADD     A,R7
02B1 F9                MOV     R1,A
02B2 EA                MOV     A,R2
02B3 3E                ADDC    A,R6
02B4 FA                MOV     R2,A
02B5 120000      E     LCALL   ?C?CLDPTR
02B8 FF                MOV     R7,A
02B9 120000      E     LCALL   _toupper
02BC 900000      R     MOV     DPTR,#j
02BF E0                MOVX    A,@DPTR
02C0 2400        R     ADD     A,#LOW temp
02C2 F582              MOV     DPL,A
02C4 E4                CLR     A
02C5 3400        R     ADDC    A,#HIGH temp
02C7 F583              MOV     DPH,A

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