startu32.lst

Demo for I2C Master and Slave

A51 MACRO ASSEMBLER  STARTU32                                                             07/21/2004 16:31:42 PAGE     3

                     125     
----                 126                     CSEG    AT      0
0000 020000   F      127     ?C_STARTUP:     LJMP    STARTUP1
                     128     
----                 129                     RSEG    ?C_C51STARTUP
                     130     
0000                 131     STARTUP1:
                     132     
                     133     ; uPSD specific initialization
                     134     
0000 74FE            135                     MOV     A, #0FEH        ; Load pre-scalars with large value
0002 F595            136                     MOV     ASCL, A         ; Slow down ADC Logic
0004 F5B1            137                     MOV     PSCL0L, A       ; Slow down PWM Logic
0006 F5B2            138                     MOV     PSCL0H, A
0008 F5B3            139                     MOV     PSCL1L, A
000A F5B4            140                     MOV     PSCL1H, A
000C F5E1            141                     MOV     USCL, A         ; Slow down USB Logic
                     142     
000E 7455            143                     MOV     A, #055H        ; Disable Watch Dog Reset
0010 F5AE            144                     MOV     WDKEY, A
                     145     
                     146     IF IDATALEN <> 0
0012 78FF            147                     MOV     R0,#IDATALEN - 1
0014 E4              148                     CLR     A
0015 F6              149     IDATALOOP:      MOV     @R0,A
0016 D8FD            150                     DJNZ    R0,IDATALOOP
                     151     ENDIF
                     152     
                     153     IF XDATALEN <> 0
                                             MOV     DPTR,#XDATASTART
                                             MOV     R7,#LOW (XDATALEN)
                               IF (LOW (XDATALEN)) <> 0
                                             MOV     R6,#(HIGH (XDATALEN)) +1
                               ELSE
                                             MOV     R6,#HIGH (XDATALEN)
                               ENDIF
                                             CLR     A
                             XDATALOOP:      MOVX    @DPTR,A
                                             INC     DPTR
                                             DJNZ    R7,XDATALOOP
                                             DJNZ    R6,XDATALOOP
                             ENDIF
                     167     
                     168     IF PPAGEENABLE <> 0
                                             MOV     PPAGE_SFR,#PPAGE
                             ENDIF
                     171     
                     172     IF PDATALEN <> 0
                                             MOV     R0,#LOW (PDATASTART)
                                             MOV     R7,#LOW (PDATALEN)
                                             CLR     A
                             PDATALOOP:      MOVX    @R0,A
                                             INC     R0
                                             DJNZ    R7,PDATALOOP
                             ENDIF
                     180     
                     181     IF IBPSTACK <> 0
                             EXTRN DATA (?C_IBP)
                             
                                             MOV     ?C_IBP,#LOW IBPSTACKTOP
                             ENDIF
                     186     
                     187     IF XBPSTACK <> 0
                             EXTRN DATA (?C_XBP)
                             
                                             MOV     ?C_XBP,#HIGH XBPSTACKTOP
A51 MACRO ASSEMBLER  STARTU32                                                             07/21/2004 16:31:42 PAGE     4

                                             MOV     ?C_XBP+1,#LOW XBPSTACKTOP
                             ENDIF
                     193     
                     194     IF PBPSTACK <> 0
                             EXTRN DATA (?C_PBP)
                                             MOV     ?C_PBP,#LOW PBPSTACKTOP
                             ENDIF
                     198     
0018 758100   F      199                     MOV     SP,#?STACK-1
                     200     ; This code is required if you use L51_BANK.A51 with Banking Mode 4
                     201     ; EXTRN CODE (?B_SWITCH0)
                     202     ;               CALL    ?B_SWITCH0      ; init bank mechanism to code bank 0
                     203     
001B 020000   F      204                     LJMP    ?C_START
                     205     
                     206                     END
A51 MACRO ASSEMBLER  STARTU32                                                             07/21/2004 16:31:42 PAGE     5

SYMBOL TABLE LISTING
------ ----- -------


N A M E             T Y P E  V A L U E   ATTRIBUTES

?C_C51STARTUP. . .  C SEG    001EH       REL=UNIT
?C_START . . . . .  C ADDR   -----       EXT
?C_STARTUP . . . .  C ADDR   0000H   A   
?STACK . . . . . .  I SEG    0001H       REL=UNIT
ACC. . . . . . . .  D ADDR   00E0H   A   
ASCL . . . . . . .  D ADDR   0095H   A   
B. . . . . . . . .  D ADDR   00F0H   A   
DDCCON . . . . . .  D ADDR   00D7H   A   
DPH. . . . . . . .  D ADDR   0083H   A   
DPL. . . . . . . .  D ADDR   0082H   A   
IBPSTACK . . . . .  N NUMB   0000H   A   
IBPSTACKTOP. . . .  N NUMB   0100H   A   
IDATALEN . . . . .  N NUMB   0100H   A   
IDATALOOP. . . . .  C ADDR   0015H   R   SEG=?C_C51STARTUP
PBPSTACK . . . . .  N NUMB   0000H   A   
PBPSTACKTOP. . . .  N NUMB   0000H   A   
PDATALEN . . . . .  N NUMB   0000H   A   
PDATASTART . . . .  N NUMB   0000H   A   
PPAGE. . . . . . .  N NUMB   0000H   A   
PPAGEENABLE. . . .  N NUMB   0000H   A   
PPAGE_SFR. . . . .  D ADDR   00A0H   A   
PSCL0H . . . . . .  D ADDR   00B2H   A   
PSCL0L . . . . . .  D ADDR   00B1H   A   
PSCL1H . . . . . .  D ADDR   00B4H   A   
PSCL1L . . . . . .  D ADDR   00B3H   A   
S1CON. . . . . . .  D ADDR   00D8H   A   
SP . . . . . . . .  D ADDR   0081H   A   
STARTUP1 . . . . .  C ADDR   0000H   R   SEG=?C_C51STARTUP
USCL . . . . . . .  D ADDR   00E1H   A   
WDKEY. . . . . . .  D ADDR   00AEH   A   
XBPSTACK . . . . .  N NUMB   0000H   A   
XBPSTACKTOP. . . .  N NUMB   0000H   A   
XDATALEN . . . . .  N NUMB   0000H   A   
XDATASTART . . . .  N NUMB   0000H   A   


REGISTER BANK(S) USED: 0 


ASSEMBLY COMPLETE.  0 WARNING(S), 0 ERROR(S)