?? startup.lst
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AX51 MACRO ASSEMBLER STARTUP 01/04/09 23:51:50 PAGE 1
MACRO ASSEMBLER AX51 V3.03c
OBJECT MODULE PLACED IN .\objects\STARTUP.obj
ASSEMBLER INVOKED BY: d:\Keil\C51\BIN\AX51.EXE ..\..\..\..\..\Examples\Chipcon\srf04\CCxx00\ex_link\STARTUP.A51 SET(SMAL
L) DEBUG PRINT(.\listings\STARTUP.lst) OBJECT(.\objects\STARTUP.obj) 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.
00010000 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.
00010000 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
AX51 MACRO ASSEMBLER STARTUP 01/04/09 23:51:50 PAGE 2
58 ;
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
79 NAME ?C_STARTUP
80
81
------ 82 ?C_C51STARTUP SEGMENT CODE
------ 83 ?STACK SEGMENT IDATA
84
------ 85 RSEG ?STACK
000000 86 DS 1
87
88 EXTRN CODE (?C_START)
89 PUBLIC ?C_STARTUP
90
000800 91 CSEG AT 0x0800
000800 020000 F 92 ?C_STARTUP: LJMP STARTUP1
93
------ 94 RSEG ?C_C51STARTUP
95
000000 96 STARTUP1:
97
98 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
112
113 IF PPAGEENABLE <> 0
MOV PPAGE_SFR,#PPAGE
ENDIF
116
117 IF PDATALEN <> 0
MOV R0,#LOW (PDATASTART)
MOV R7,#LOW (PDATALEN)
CLR A
PDATALOOP: MOVX @R0,A
INC R0
DJNZ R7,PDATALOOP
AX51 MACRO ASSEMBLER STARTUP 01/04/09 23:51:50 PAGE 3
ENDIF
125
126 IF IBPSTACK <> 0
EXTRN DATA (?C_IBP)
MOV ?C_IBP,#LOW IBPSTACKTOP
ENDIF
131
132 IF XBPSTACK <> 0
EXTRN DATA (?C_XBP)
MOV ?C_XBP,#HIGH XBPSTACKTOP
MOV ?C_XBP+1,#LOW XBPSTACKTOP
ENDIF
138
139 IF PBPSTACK <> 0
EXTRN DATA (?C_PBP)
MOV ?C_PBP,#LOW PBPSTACKTOP
ENDIF
143
000000 758100 F 144 MOV SP,#?STACK-1
145 ; This code is required if you use L51_BANK.A51 with Banking Mode 4
146 ; EXTRN CODE (?B_SWITCH0)
147 ; CALL ?B_SWITCH0 ; init bank mechanism to code bank 0
000003 020000 E 148 LJMP ?C_START
149
150 END
AX51 MACRO ASSEMBLER STARTUP 01/04/09 23:51:50 PAGE 4
SYMBOL TABLE LISTING
------ ----- -------
N A M E T Y P E V A L U E ATTRIBUTES
?C_C51STARTUP . . . . . . . . C SEG 000006H REL=UNIT, ALN=BYTE
?C_START. . . . . . . . . . . C ADDR ------- EXT
?C_STARTUP. . . . . . . . . . C ADDR 0800H R SEG=?CO?STARTUP?3
?STACK. . . . . . . . . . . . I SEG 000001H REL=UNIT, ALN=BYTE
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 00010000H A
PDATALEN. . . . . . . . . . . N NUMB 0000H A
PDATASTART. . . . . . . . . . N NUMB 0000H A
PPAGE . . . . . . . . . . . . N NUMB 0000H A
PPAGE_SFR . . . . . . . . . . D ADDR 00A0H A
PPAGEENABLE . . . . . . . . . N NUMB 0000H A
SP. . . . . . . . . . . . . . D ADDR 0081H A
STARTUP1. . . . . . . . . . . C ADDR 0000H R SEG=?C_C51STARTUP
XBPSTACK. . . . . . . . . . . N NUMB 0000H A
XBPSTACKTOP . . . . . . . . . N NUMB 00010000H A
XDATALEN. . . . . . . . . . . N NUMB 0000H A
XDATASTART. . . . . . . . . . N NUMB 0000H A
REGISTER BANK(S) USED: 0
ASSEMBLY COMPLETE. 0 WARNING(S), 0 ERROR(S).
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