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8051.asm
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8051.asm
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;---------------------------------
; Cross-Assembler for 8051 Series
; Copyright (C) 1997 by Rst7/CBS
;---------------------------------
;
opcode EQU 0
secondbyte EQU 0-1
;
DEFMAC byte2
DEFB \0,\1
ENDMAC
DEFMAC byte
DEFB \0
ENDMAC
;
DEFMAC compil@1
DEFB \0
.IF secondbyte-#FFFF
.ELSE
DEFB secondbyte
secondbyte = 0-1
.ENDIF
ENDMAC
;
DEFMAC Error
\0
ENDMAC
;
DEFMAC compile@
\r .IF "\c\c"-"RR"
.ELSE
Error Adressing Error in @Rx
.ENDIF
\r .IF " \n\c"-" 0"
compil@1 opcode+6
.ENDIF
\r .IF " \n\c"-" 1"
compil@1 opcode+7
.ENDIF
Error Adressing Error in @Rx
ENDMAC
;
DEFMAC compilead
DEFB opcode+5,\0
.IF secondbyte-#FFFF
.ELSE
DEFB secondbyte
secondbyte = 0-1
.ENDIF
ENDMAC
;
DEFMAC compilereg
\r DEFB opcode+"\n\c"-"0"+8
.IF secondbyte-#FFFF
.ELSE
DEFB secondbyte
secondbyte = 0-1
.ENDIF
ENDMAC
;
DEFMAC mov.2A
\r .IF " \c"-" #"
byte2 #74,\n\s
.ENDIF
\r .IF " \c"-" @"
compile@ \n\s
.ENDIF
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
compilereg \0
.ENDIF
compilead \0
ENDMAC
;
DEFMAC mov.fromA
;
\r .IF " \c"-" @"
compile@ \n\s
.ENDIF
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
compilereg \0
.ENDIF
compilead \0
ENDMAC
;
;---------------------------------
DEFMAC MOV.part2
;\r\s,\n
.IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
secondbyte = \0&#FF
opcode = #80
compilereg \1
.ENDIF
;\r\s,\n
DEFB #85,\s;,\0
;
ENDMAC
;----
DEFMAC MOVC A,@A+PC
DEFB #83
ENDMAC
DEFMAC MOVC A,@A+DPTR
DEFB #93
ENDMAC
DEFMAC MOVX A,@DPTR
DEFB #E0
ENDMAC
DEFMAC MOVX @DPTR,A
DEFB #F0
ENDMAC
DEFMAC MOVX A,@R0
DEFB #E2
ENDMAC
DEFMAC MOVX A,@R1
DEFB #E3
ENDMAC
DEFMAC MOVX @R0,A
DEFB #F2
ENDMAC
DEFMAC MOVX @R1,A
DEFB #F3
ENDMAC
DEFMAC MOV DPTR,#
DEFB #90
DEFB \0/256,\0
ENDMAC
;----
DEFMAC MOV
;
.IF " \1"-" C"
byte2 #92,\0
.ENDIF
.IF " \0"-" C"
byte2 #A2,\1
.ENDIF
;
.IF " \1"-" A"
opcode = #F0
mov.fromA \0 ;
.ENDIF
.IF " \0"-" A"
opcode = #E0
mov.2A \1 ;
.ENDIF
;\r\s,\n
.IF " \c"-" #"
secondbyte = \n\s
secondbyte = secondbyte&#FF
opcode = #70
mov.fromA \0 ;
.ENDIF
;
\r .IF " \c"-" @"
secondbyte = \1&#FF
opcode = #A0
compile@ \n\s
.ENDIF
;
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|(" \n\c"-" ,")
secondbyte = \1&#FF
opcode = #A0
compilereg \0
.ENDIF
;
;\r\s,
.IF " \n\c"-" @"
secondbyte = \0&#FF
opcode = #80
compile@ \n\s
.ENDIF
MOV.part2 \0,\1 ;
ENDMAC
;----
DEFMAC onebytecmd
.IF " \1"-" \2"
DEFB \0
.ELSE
Error Need '\2' operand
.ENDIF
ENDMAC
;
DEFMAC RR
onebytecmd #03,\0,A
ENDMAC
DEFMAC RRC
onebytecmd #13,\0,A
ENDMAC
DEFMAC RL
onebytecmd #23,\0,A
ENDMAC
DEFMAC RLC
onebytecmd #33,\0,A
ENDMAC
DEFMAC RET
onebytecmd #22,\0,
ENDMAC
DEFMAC RETI
onebytecmd #32,\0,
ENDMAC
DEFMAC DIV
onebytecmd #84,\0,AB
ENDMAC
DEFMAC MUL
onebytecmd #A4,\0,AB
ENDMAC
DEFMAC SWAP
onebytecmd #C4,\0,A
ENDMAC
DEFMAC DA
onebytecmd #D4,\0,A
ENDMAC
;------
DEFMAC parse1
\r .IF " \c"-" #"
byte2 opcode+4,\n\s
.ENDIF
\r .IF " \c"-" @"
compile@ \n\s
.ENDIF
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
compilereg \0
.ENDIF
compilead \0
ENDMAC
;
DEFMAC parse2
.IF \2
Error Illegal adressing mode
.ENDIF
.IF " \0"-" A"
byte2 opcode+2,\1
.ENDIF
.IF " \r\c"-" #"
DEFB opcode+3
byte2 \1,\n\s,
.ENDIF
Error Illegal adressing mode
ENDMAC
;
DEFMAC parse
opcode = \1
.IF " \2"-" A"
parse1 \0 ;
.ELSE
parse2 \0,\2,\3
.ENDIF
ENDMAC
;
DEFMAC ADD
parse \1,#20,\0,0
ENDMAC
DEFMAC ADDC
parse \1,#30,\0,0
ENDMAC
;
DEFMAC ORL.part2
\r .IF " \c"-" /"
DEFB #A0,\n\s
.ELSE
DEFB #72,\s
.ENDIF
ENDMAC
;
DEFMAC ORL
.IF " \0"-" C"
ORL.part2 \1
.ENDIF
parse \1,#40,\0,1
ENDMAC
;
DEFMAC ANL.part2
\r .IF " \c"-" /"
DEFB #B0,\n\s
.ELSE
DEFB #82,\s
.ENDIF
ENDMAC
;
DEFMAC ANL
.IF " \0"-" C"
ANL.part2 \1
.ENDIF
parse \1,#50,\0,1
ENDMAC
DEFMAC XRL
parse \1,#60,\0,1
ENDMAC
DEFMAC SUBB
parse \1,#90,\0,0
ENDMAC
DEFMAC XCHD A,@R0
DEFB #D6
ENDMAC
DEFMAC XCHD A,@R1
DEFB #D7
ENDMAC
DEFMAC XCH
parse \1,#C0,\0,0
ENDMAC
;
DEFMAC INC.part2
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
compilereg \0
.ENDIF
\r .IF ("\c\n\c\n"-"DP")|("\c\n\c\n\s "-"TR")
byte #A3
.ENDIF
compilead \0
ENDMAC
DEFMAC INC
.IF "~~\1"-"~~"
.ELSE
Error Only one operand need
.ENDIF
opcode = 0
\r .IF " \c"-" A"
byte opcode+4
.ENDIF
\r .IF " \c"-" @"
compile@ \n\s
.ENDIF
INC.part2 \0 ; ;
ENDMAC
;
DEFMAC DEC.part2
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|("\n\c"-" ")
compilereg \0
.ENDIF
compilead \0
ENDMAC
DEFMAC DEC
.IF "~~\1"-"~~"
.ELSE
Error Only one operand need
.ENDIF
opcode = #10
\r .IF " \c"-" A"
byte opcode+4
.ENDIF
\r .IF " \c"-" @"
compile@ \n\s
.ENDIF
DEC.part2 \0 ; ;
ENDMAC
;
DEFMAC DJNZ
opcode = #D0
secondbyte = \1-$-2
.IF secondbyte+#80/256
.ELSE
Error DJNZ too far
.ENDIF
secondbyte = secondbyte&255
\r .IF ("\c\c"-"RR")|(" \n\c"-" 0"/8)|(" \n\c"-" ,")
compilereg \0
.ENDIF
compilead \0
ENDMAC
;
DEFMAC JMP @A+DPTR
DEFB #73
ENDMAC
;
DEFMAC PUSH
DEFB #C0,\0
ENDMAC
DEFMAC POP
DEFB #D0,\0
ENDMAC
;
DEFMAC CPL C
DEFB #B3
ENDMAC
DEFMAC CLR C
DEFB #C3
ENDMAC
DEFMAC SETB C
DEFB #D3
ENDMAC
;
DEFMAC CPL
DEFB #B2,\0
ENDMAC
DEFMAC CLR
DEFB #C2,\0
ENDMAC
DEFMAC SETB
DEFB #D2,\0
ENDMAC
;
DEFMAC LJMP
DEFB #02,\0/256,\0
ENDMAC
DEFMAC LCALL
DEFB #12,\0/256,\0
ENDMAC
;
DEFMAC AJMP
DEFB #01|(\0ʼ/8),\0
ENDMAC
DEFMAC ACALL
DEFB #11|(\0ʼ/8),\0
ENDMAC
;
DEFMAC sendrel
opcode = \1-$-2
.IF opcode+#80/256
.ELSE
Error Relative jump too far
.ENDIF
DEFB \0
.IF "~~\2"-"~~"
.ELSE
DEFB \2
.ENDIF
DEFB opcode
ENDMAC
;
DEFMAC JBC
sendrel #10,\1,\0
ENDMAC
DEFMAC JB
sendrel #20,\1,\0
ENDMAC
DEFMAC JNB
sendrel #30,\1,\0
ENDMAC
DEFMAC JC
sendrel #40,\0
ENDMAC
DEFMAC JNC
sendrel #50,\0
ENDMAC
DEFMAC JZ
sendrel #60,\0
ENDMAC
DEFMAC JNZ
sendrel #70,\0
ENDMAC
DEFMAC SJMP
sendrel #80,\0
ENDMAC
;---------------------------------
; Define symbolical names of internal ports/registers
;
ACC EQU 0E0H
BREG EQU 0F0H
PSW EQU 0D0H
SPP EQU 081H
DPH EQU 083H
DPL EQU 082H
P0 EQU 080H
P1 EQU 090H
P2 EQU 0A0H
P3 EQU 0B0H
IP EQU 0B8H
IE EQU 0A8H
TMOD EQU 089H
TCON EQU 088H
TH0 EQU 08CH
TL0 EQU 08AH
TH1 EQU 08DH
TL1 EQU 08BH
SCON EQU 098H
SBUF EQU 099H
PCON EQU 087H
;
ORG #8000
MOV A,1
MOV C,1