📄 startup.lst
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A51 MACRO ASSEMBLER STARTUP 08/21/2004 16:34:40 PAGE 1
MACRO ASSEMBLER A51 V7.00a
OBJECT MODULE PLACED IN C:\WAVE\PEI\YXKTV\STARTUP.OBJ
ASSEMBLER INVOKED BY: c:\keil\c51\BIN\A51.EXE C:\WAVE\PEI\YXKTV\STARTUP.ASM DB SB
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
25
26 extrn data (InitOkNum,InitOkNum1)
27
00FF 28 IDATALEN EQU 0ffH ; the length of IDATA memory in bytes.
29 ;
0000 30 XDATASTART EQU 0H ; the absolute start-address of XDATA memory
0000 31 XDATALEN EQU 0H ; the length of XDATA memory in bytes.
32 ;
0000 33 PDATASTART EQU 0H ; the absolute start-address of PDATA memory
0000 34 PDATALEN EQU 0H ; the length of PDATA memory in bytes.
35 ;
36 ; Notes: The IDATA space overlaps physically the DATA and BIT areas of the
37 ; 8051 CPU. At minimum the memory space occupied from the C51
38 ; run-time routines must be set to zero.
39 ;------------------------------------------------------------------------------
40 ;
41 ; Reentrant Stack Initilization
42 ;
43 ; The following EQU statements define the stack pointer for reentrant
44 ; functions and initialized it:
45 ;
46 ; Stack Space for reentrant functions in the SMALL model.
0000 47 IBPSTACK EQU 0 ; set to 1 if small reentrant is used.
0100 48 IBPSTACKTOP EQU 0FFH+1 ; set top of stack to highest location+1.
49 ;
50 ; Stack Space for reentrant functions in the LARGE model.
0000 51 XBPSTACK EQU 0 ; set to 1 if large reentrant is used.
0000 52 XBPSTACKTOP EQU 0FFFFH+1; set top of stack to highest location+1.
53 ;
54 ; Stack Space for reentrant functions in the COMPACT model.
0000 55 PBPSTACK EQU 0 ; set to 1 if compact reentrant is used.
0000 56 PBPSTACKTOP EQU 0FFFFH+1; set top of stack to highest location+1.
57 ;
58 ;------------------------------------------------------------------------------
A51 MACRO ASSEMBLER STARTUP 08/21/2004 16:34:40 PAGE 2
59 ;
60 ; Page Definition for Using the Compact Model with 64 KByte xdata RAM
61 ;
62 ; The following EQU statements define the xdata page used for pdata
63 ; variables. The EQU PPAGE must conform with the PPAGE control used
64 ; in the linker invocation.
65 ;
0000 66 PPAGEENABLE EQU 0 ; set to 1 if pdata object are used.
67 ;
0000 68 PPAGE EQU 0 ; define PPAGE number.
69 ;
00A0 70 PPAGE_SFR DATA 0A0H ; SFR that supplies uppermost address byte
71 ; (most 8051 variants use P2 as uppermost address byte)
72 ;
73 ;------------------------------------------------------------------------------
74
75 ; Standard SFR Symbols
00E0 76 ACC DATA 0E0H
00F0 77 B DATA 0F0H
0081 78 SP DATA 81H
0082 79 DPL DATA 82H
0083 80 DPH DATA 83H
81
82 NAME ?C_STARTUP
83
84
85 ?C_C51STARTUP SEGMENT CODE
86 ?STACK SEGMENT IDATA
87
---- 88 RSEG ?STACK
0000 89 DS 1
90
91 EXTRN CODE (?C_START)
92 PUBLIC ?C_STARTUP
93
---- 94 CSEG AT 0
0000 020000 F 95 ?C_STARTUP: LJMP STARTUP1
96
---- 97 RSEG ?C_C51STARTUP
98
0000 99 STARTUP1:
100
101 ;pei上电不清砇AM区 有未初始化但InitOkNum=aa 的情况
0000 E500 F 102 mov a,InitOkNum
0002 B4A607 103 cjne a,#0a6h,CLRRAM
104 ;sjmp STARTUP2
0005 E500 F 105 mov a,InitOkNum1
0007 B45A02 106 cjne a,#05ah,CLRRAM
000A 8006 107 sjmp STARTUP2
000C 108 CLRRAM:
109 IF IDATALEN <> 0
000C 78FE 110 MOV R0,#IDATALEN - 1
000E E4 111 CLR A
000F F6 112 IDATALOOP: MOV @R0,A
0010 D8FD 113 DJNZ R0,IDATALOOP
114 ENDIF
0012 115 STARTUP2:
116 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
A51 MACRO ASSEMBLER STARTUP 08/21/2004 16:34:40 PAGE 3
XDATALOOP: MOVX @DPTR,A
INC DPTR
DJNZ R7,XDATALOOP
DJNZ R6,XDATALOOP
ENDIF
130
131 IF PPAGEENABLE <> 0
MOV PPAGE_SFR,#PPAGE
ENDIF
134
135 IF PDATALEN <> 0
MOV R0,#LOW (PDATASTART)
MOV R7,#LOW (PDATALEN)
CLR A
PDATALOOP: MOVX @R0,A
INC R0
DJNZ R7,PDATALOOP
ENDIF
143
144 IF IBPSTACK <> 0
EXTRN DATA (?C_IBP)
MOV ?C_IBP,#LOW IBPSTACKTOP
ENDIF
149
150 IF XBPSTACK <> 0
EXTRN DATA (?C_XBP)
MOV ?C_XBP,#HIGH XBPSTACKTOP
MOV ?C_XBP+1,#LOW XBPSTACKTOP
ENDIF
156
157 IF PBPSTACK <> 0
EXTRN DATA (?C_PBP)
MOV ?C_PBP,#LOW PBPSTACKTOP
ENDIF
161
0012 758100 F 162 MOV SP,#?STACK-1
163 ; This code is required if you use L51_BANK.A51 with Banking Mode 4
164 ; EXTRN CODE (?B_SWITCH0)
165 ; CALL ?B_SWITCH0 ; init bank mechanism to code bank 0
0015 020000 F 166 LJMP ?C_START
167
168 END
A51 MACRO ASSEMBLER STARTUP 08/21/2004 16:34:40 PAGE 4
SYMBOL TABLE LISTING
------ ----- -------
N A M E T Y P E V A L U E ATTRIBUTES
?C_C51STARTUP. . . C SEG 0018H REL=UNIT
?C_START . . . . . C ADDR ----- EXT
?C_STARTUP . . . . C ADDR 0000H A
?STACK . . . . . . I SEG 0001H REL=UNIT
ACC. . . . . . . . D ADDR 00E0H A
B. . . . . . . . . D ADDR 00F0H A
CLRRAM . . . . . . C ADDR 000CH R SEG=?C_C51STARTUP
DPH. . . . . . . . D ADDR 0083H A
DPL. . . . . . . . D ADDR 0082H A
IBPSTACK . . . . . N NUMB 0000H A
IBPSTACKTOP. . . . N NUMB 0100H A
IDATALEN . . . . . N NUMB 00FFH A
IDATALOOP. . . . . C ADDR 000FH R SEG=?C_C51STARTUP
INITOKNUM. . . . . D ADDR ----- EXT
INITOKNUM1 . . . . D ADDR ----- EXT
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
STARTUP1 . . . . . C ADDR 0000H R SEG=?C_C51STARTUP
STARTUP2 . . . . . C ADDR 0012H R SEG=?C_C51STARTUP
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)
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