253 lines
14 KiB
Plaintext
253 lines
14 KiB
Plaintext
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A51 MACRO ASSEMBLER STARTUP 05/03/2018 10:39:44 PAGE 1
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MACRO ASSEMBLER A51 V8.02b
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OBJECT MODULE PLACED IN STARTUP.OBJ
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ASSEMBLER INVOKED BY: D:\KEIL_51\C51\BIN\A51.EXE STARTUP.A51 SET(SMALL) DEBUG EP
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LOC OBJ LINE SOURCE
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1 $nomod51
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2 ;------------------------------------------------------------------------------
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3 ; This file is part of the C51 Compiler package
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4 ; Copyright (c) 1988-2005 Keil Elektronik GmbH and Keil Software, Inc.
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5 ; Version 8.01
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6 ;
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7 ; *** <<< Use Configuration Wizard in Context Menu >>> ***
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8 ;------------------------------------------------------------------------------
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9 ; STARTUP.A51: This code is executed after processor reset.
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10 ;
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11 ; To translate this file use A51 with the following invocation:
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12 ;
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13 ; A51 STARTUP.A51
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14 ;
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15 ; To link the modified STARTUP.OBJ file to your application use the following
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16 ; Lx51 invocation:
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17 ;
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18 ; Lx51 your object file list, STARTUP.OBJ controls
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19 ;
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20 ;------------------------------------------------------------------------------
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21 ;
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22 ; User-defined <h> Power-On Initialization of Memory
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23 ;
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24 ; With the following EQU statements the initialization of memory
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25 ; at processor reset can be defined:
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26 ;
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27 ; <o> IDATALEN: IDATA memory size <0x0-0x100>
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28 ; <i> Note: The absolute start-address of IDATA memory is always 0
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29 ; <i> The IDATA space overlaps physically the DATA and BIT areas.
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0080 30 IDATALEN EQU 80H
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31 ;
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32 ; <o> XDATASTART: XDATA memory start address <0x0-0xFFFF>
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33 ; <i> The absolute start address of XDATA memory
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0000 34 XDATASTART EQU 0
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35 ;
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36 ; <o> XDATALEN: XDATA memory size <0x0-0xFFFF>
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37 ; <i> The length of XDATA memory in bytes.
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0000 38 XDATALEN EQU 0
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39 ;
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40 ; <o> PDATASTART: PDATA memory start address <0x0-0xFFFF>
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41 ; <i> The absolute start address of PDATA memory
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0000 42 PDATASTART EQU 0H
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43 ;
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44 ; <o> PDATALEN: PDATA memory size <0x0-0xFF>
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45 ; <i> The length of PDATA memory in bytes.
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0000 46 PDATALEN EQU 0H
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47 ;
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48 ;</h>
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49 ;------------------------------------------------------------------------------
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50 ;
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51 ;<h> Reentrant Stack Initialization
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52 ;
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53 ; The following EQU statements define the stack pointer for reentrant
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54 ; functions and initialized it:
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55 ;
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56 ; <h> Stack Space for reentrant functions in the SMALL model.
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57 ; <q> IBPSTACK: Enable SMALL model reentrant stack
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58 ; <i> Stack space for reentrant functions in the SMALL model.
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A51 MACRO ASSEMBLER STARTUP 05/03/2018 10:39:44 PAGE 2
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0000 59 IBPSTACK EQU 0 ; set to 1 if small reentrant is used.
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60 ; <o> IBPSTACKTOP: End address of SMALL model stack <0x0-0xFF>
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61 ; <i> Set the top of the stack to the highest location.
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0100 62 IBPSTACKTOP EQU 0xFF +1 ; default 0FFH+1
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63 ; </h>
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64 ;
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65 ; <h> Stack Space for reentrant functions in the LARGE model.
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66 ; <q> XBPSTACK: Enable LARGE model reentrant stack
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67 ; <i> Stack space for reentrant functions in the LARGE model.
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0000 68 XBPSTACK EQU 0 ; set to 1 if large reentrant is used.
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69 ; <o> XBPSTACKTOP: End address of LARGE model stack <0x0-0xFFFF>
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70 ; <i> Set the top of the stack to the highest location.
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0000 71 XBPSTACKTOP EQU 0xFFFF +1 ; default 0FFFFH+1
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72 ; </h>
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73 ;
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74 ; <h> Stack Space for reentrant functions in the COMPACT model.
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75 ; <q> PBPSTACK: Enable COMPACT model reentrant stack
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76 ; <i> Stack space for reentrant functions in the COMPACT model.
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0000 77 PBPSTACK EQU 0 ; set to 1 if compact reentrant is used.
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78 ;
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79 ; <o> PBPSTACKTOP: End address of COMPACT model stack <0x0-0xFFFF>
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80 ; <i> Set the top of the stack to the highest location.
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0100 81 PBPSTACKTOP EQU 0xFF +1 ; default 0FFH+1
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82 ; </h>
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83 ;</h>
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84 ;------------------------------------------------------------------------------
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85 ;
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86 ; Memory Page for Using the Compact Model with 64 KByte xdata RAM
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87 ; <e>Compact Model Page Definition
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88 ;
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89 ; <i>Define the XDATA page used for PDATA variables.
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90 ; <i>PPAGE must conform with the PPAGE set in the linker invocation.
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91 ;
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92 ; Enable pdata memory page initalization
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0000 93 PPAGEENABLE EQU 0 ; set to 1 if pdata object are used.
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94 ;
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95 ; <o> PPAGE number <0x0-0xFF>
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96 ; <i> uppermost 256-byte address of the page used for PDATA variables.
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0000 97 PPAGE EQU 0
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98 ;
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99 ; <o> SFR address which supplies uppermost address byte <0x0-0xFF>
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100 ; <i> most 8051 variants use P2 as uppermost address byte
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00A0 101 PPAGE_SFR DATA 0A0H
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102 ;
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103 ; </e>
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104 ;------------------------------------------------------------------------------
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105
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106 ; Standard SFR Symbols
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00E0 107 ACC DATA 0E0H
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00F0 108 B DATA 0F0H
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0081 109 SP DATA 81H
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0082 110 DPL DATA 82H
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0083 111 DPH DATA 83H
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112
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113 NAME ?C_STARTUP
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114
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115
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116 ?C_C51STARTUP SEGMENT CODE
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117 ?STACK SEGMENT IDATA
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118
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---- 119 RSEG ?STACK
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0000 120 DS 1
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121
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122 EXTRN CODE (?C_START)
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123 PUBLIC ?C_STARTUP
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124
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A51 MACRO ASSEMBLER STARTUP 05/03/2018 10:39:44 PAGE 3
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---- 125 CSEG AT 0
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0000 020000 F 126 ?C_STARTUP: LJMP STARTUP1
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127
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---- 128 RSEG ?C_C51STARTUP
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129
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0000 130 STARTUP1:
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131
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132 IF IDATALEN <> 0
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0000 787F 133 MOV R0,#IDATALEN - 1
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0002 E4 134 CLR A
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0003 F6 135 IDATALOOP: MOV @R0,A
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0004 D8FD 136 DJNZ R0,IDATALOOP
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137 ENDIF
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138
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139 IF XDATALEN <> 0
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MOV DPTR,#XDATASTART
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MOV R7,#LOW (XDATALEN)
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IF (LOW (XDATALEN)) <> 0
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MOV R6,#(HIGH (XDATALEN)) +1
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ELSE
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MOV R6,#HIGH (XDATALEN)
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ENDIF
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CLR A
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XDATALOOP: MOVX @DPTR,A
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INC DPTR
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DJNZ R7,XDATALOOP
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DJNZ R6,XDATALOOP
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ENDIF
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153
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154 IF PPAGEENABLE <> 0
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MOV PPAGE_SFR,#PPAGE
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ENDIF
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157
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158 IF PDATALEN <> 0
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MOV R0,#LOW (PDATASTART)
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MOV R7,#LOW (PDATALEN)
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CLR A
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PDATALOOP: MOVX @R0,A
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INC R0
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DJNZ R7,PDATALOOP
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ENDIF
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166
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167 IF IBPSTACK <> 0
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EXTRN DATA (?C_IBP)
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MOV ?C_IBP,#LOW IBPSTACKTOP
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ENDIF
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172
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173 IF XBPSTACK <> 0
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EXTRN DATA (?C_XBP)
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MOV ?C_XBP,#HIGH XBPSTACKTOP
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MOV ?C_XBP+1,#LOW XBPSTACKTOP
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ENDIF
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179
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180 IF PBPSTACK <> 0
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EXTRN DATA (?C_PBP)
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MOV ?C_PBP,#LOW PBPSTACKTOP
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ENDIF
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184
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0006 758100 F 185 MOV SP,#?STACK-1
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186
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187 ; This code is required if you use L51_BANK.A51 with Banking Mode 4
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188 ;<h> Code Banking
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189 ; <q> Select Bank 0 for L51_BANK.A51 Mode 4
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190
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A51 MACRO ASSEMBLER STARTUP 05/03/2018 10:39:44 PAGE 4
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195 ;</h>
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0009 020000 F 196 LJMP ?C_START
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197
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198 END
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A51 MACRO ASSEMBLER STARTUP 05/03/2018 10:39:44 PAGE 5
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SYMBOL TABLE LISTING
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------ ----- -------
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N A M E T Y P E V A L U E ATTRIBUTES
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?C_C51STARTUP. . . C SEG 000CH REL=UNIT
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?C_START . . . . . C ADDR ----- EXT
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?C_STARTUP . . . . C ADDR 0000H A
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?STACK . . . . . . I SEG 0001H REL=UNIT
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ACC. . . . . . . . D ADDR 00E0H A
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B. . . . . . . . . D ADDR 00F0H A
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DPH. . . . . . . . D ADDR 0083H A
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DPL. . . . . . . . D ADDR 0082H A
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IBPSTACK . . . . . N NUMB 0000H A
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IBPSTACKTOP. . . . N NUMB 0100H A
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IDATALEN . . . . . N NUMB 0080H A
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IDATALOOP. . . . . C ADDR 0003H R SEG=?C_C51STARTUP
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PBPSTACK . . . . . N NUMB 0000H A
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PBPSTACKTOP. . . . N NUMB 0100H A
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PDATALEN . . . . . N NUMB 0000H A
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PDATASTART . . . . N NUMB 0000H A
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PPAGE. . . . . . . N NUMB 0000H A
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PPAGEENABLE. . . . N NUMB 0000H A
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PPAGE_SFR. . . . . D ADDR 00A0H A
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SP . . . . . . . . D ADDR 0081H A
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STARTUP1 . . . . . C ADDR 0000H R SEG=?C_C51STARTUP
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XBPSTACK . . . . . N NUMB 0000H A
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XBPSTACKTOP. . . . N NUMB 0000H A
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XDATALEN . . . . . N NUMB 0000H A
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XDATASTART . . . . N NUMB 0000H A
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REGISTER BANK(S) USED: 0
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ASSEMBLY COMPLETE. 0 WARNING(S), 0 ERROR(S)
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