A51 MACRO ASSEMBLER  STARTUP                                                              04/14/2007 11:59:57 PAGE     1


MACRO ASSEMBLER A51 V7.10
OBJECT MODULE PLACED IN STARTUP.OBJ
ASSEMBLER INVOKED BY: C:\Keil\C51\BIN\A51.EXE STARTUP.A51 SET(SMALL) DEBUG EP

LOC  OBJ            LINE     SOURCE

                       1     $nomod51 
                       2     ;------------------------------------------------------------------------------
                       3     ;  This file is part of the C51 Compiler package
                       4     ;  Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.
                       5     ;------------------------------------------------------------------------------
                       6     ;  STARTUP.A51:  This code is executed after processor reset.
                       7     ;
                       8     ;  To translate this file use A51 with the following invocation:
                       9     ;
                      10     ;     A51 STARTUP.A51
                      11     ;
                      12     ;  To link the modified STARTUP.OBJ file to your application use the following
                      13     ;  BL51 invocation:
                      14     ;
                      15     ;     BL51 <your object file list>, STARTUP.OBJ <controls>
                      16     ;
                      17     ;------------------------------------------------------------------------------
                      18     ;
                      19     ;  User-defined Power-On Initialization of Memory
                      20     ;
                      21     ;  With the following EQU statements the initialization of memory
                      22     ;  at processor reset can be defined:
                      23     ;
                      24     ;               ; the absolute start-address of IDATA memory is always 0
  0080                25     IDATALEN        EQU     80H     ; the length of IDATA memory in bytes.
                      26     ;
  0000                27     XDATASTART      EQU     0H      ; the absolute start-address of XDATA memory
  0000                28     XDATALEN        EQU     0H      ; the length of XDATA memory in bytes.
                      29     ;
  0000                30     PDATASTART      EQU     0H      ; the absolute start-address of PDATA memory
  0000                31     PDATALEN        EQU     0H      ; the length of PDATA memory in bytes.
                      32     ;
                      33     ;  Notes:  The IDATA space overlaps physically the DATA and BIT areas of the
                      34     ;          8051 CPU. At minimum the memory space occupied from the C51 
                      35     ;          run-time routines must be set to zero.
                      36     ;------------------------------------------------------------------------------
                      37     ;
                      38     ;  Reentrant Stack Initilization
                      39     ;
                      40     ;  The following EQU statements define the stack pointer for reentrant
                      41     ;  functions and initialized it:
                      42     ;
                      43     ;  Stack Space for reentrant functions in the SMALL model.
  0000                44     IBPSTACK        EQU     0       ; set to 1 if small reentrant is used.
  0100                45     IBPSTACKTOP     EQU     0FFH+1  ; set top of stack to highest location+1.
                      46     ;
                      47     ;  Stack Space for reentrant functions in the LARGE model.      
  0000                48     XBPSTACK        EQU     0       ; set to 1 if large reentrant is used.
  0000                49     XBPSTACKTOP     EQU     0FFFFH+1; set top of stack to highest location+1.
                      50     ;
                      51     ;  Stack Space for reentrant functions in the COMPACT model.    
  0000                52     PBPSTACK        EQU     0       ; set to 1 if compact reentrant is used.
  0000                53     PBPSTACKTOP     EQU     0FFFFH+1; set top of stack to highest location+1.
                      54     ;
                      55     ;------------------------------------------------------------------------------
                      56     ;
                      57     ;  Page Definition for Using the Compact Model with 64 KByte xdata RAM
                      58     ;
A51 MACRO ASSEMBLER  STARTUP                                                              04/14/2007 11:59:57 PAGE     2

                      59     ;  The following EQU statements define the xdata page used for pdata
                      60     ;  variables. The EQU PPAGE must conform with the PPAGE control used
                      61     ;  in the linker invocation.
                      62     ;
  0000                63     PPAGEENABLE     EQU     0       ; set to 1 if pdata object are used.
                      64     ;
  0000                65     PPAGE           EQU     0       ; define PPAGE number.
                      66     ;
  00A0                67     PPAGE_SFR       DATA    0A0H    ; SFR that supplies uppermost address byte
                      68     ;               (most 8051 variants use P2 as uppermost address byte)
                      69     ;
                      70     ;------------------------------------------------------------------------------
                      71     
                      72     ; Standard SFR Symbols 
  00E0                73     ACC     DATA    0E0H
  00F0                74     B       DATA    0F0H
  0081                75     SP      DATA    81H
  0082                76     DPL     DATA    82H
  0083                77     DPH     DATA    83H
                      78     ;EXTRN CODE (?main)
                      79     ;EXTRN CODE (?C_START)
                      80     ;extrn main
                      81     ;       ORG 0x00
                      82     ;LJMP    0xff
                      83     ;;      jmp 0x100;?main
0033                  84             ORG 0x33
0033 02FD1E           85             LJMP 0xfd1e
                      86     ;       ORG 0x100
                      87                   ;  lcall ?main
                      88     
                      89                    END
A51 MACRO ASSEMBLER  STARTUP                                                              04/14/2007 11:59:57 PAGE     3

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


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

ACC. . . . . . . .  D ADDR   00E0H   A   
B. . . . . . . . .  D ADDR   00F0H   A   
DPH. . . . . . . .  D ADDR   0083H   A   
DPL. . . . . . . .  D ADDR   0082H   A   
IBPSTACK . . . . .  N NUMB   0000H   A   
IBPSTACKTOP. . . .  N NUMB   0100H   A   
IDATALEN . . . . .  N NUMB   0080H   A   
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   
SP . . . . . . . .  D ADDR   0081H   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)