89 lines
2.9 KiB
ArmAsm
89 lines
2.9 KiB
ArmAsm
; Zero Page locatinos used by Applesoft Lite
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GOWARM := $0000 ; Gets "jmp RESTART"
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GOSTROUTZ := $0003 ; Gets "jmp STROUT"
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CHARAC := $000D ; Alternate string terminator
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ENDCHR := $000E ; String terminator
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TKNCNTR := $000F ; Used in PARSE
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EOLPNTR := $000F ; Used in NXLIN
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NUMDIM := $000F ; Used in array routines
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DIMFLG := $0010
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VALTYP := $0011 ; $: VALTYP=$FF; %: VALTYP+1=$80
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DATAFLG := $0013 ; Used in PARSE
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GARFLG := $0013 ; Used in GARBAG
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SUBFLG := $0014
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INPUTFLG := $0015 ; = $40 for GET, $98 for READ
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CPRMASK := $0016 ; Receives CPRTYP in FRMEVL
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PROMPT := $0033
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LINNUM := $0050 ; Converted line #
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TEMPPT := $0052 ; Last used temp string desc
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LASTPT := $0053 ; Last used temp string pntr
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TEMPST := $0055 ; Holds up to 3 descriptors
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INDEX := $005E
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DEST := $0060
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RESULT := $0062 ; Result of last * or /
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TXTTAB := $0067 ; Start of program text
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VARTAB := $0069 ; Start of variable storage
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ARYTAB := $006B ; Start of array storage
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STREND := $006D ; End of array storage
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FRETOP := $006F ; Start of string storage
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FRESPC := $0071 ; Temp pntr, string routines
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MEMSIZ := $0073 ; End of string space (HIMEM)
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CURLIN := $0075 ; Current line number
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OLDLIN := $0077 ; Addr. of last line executed
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OLDTEXT := $0079
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DATLIN := $007B ; Line # of current data stt.
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DATPTR := $007D ; Addr of current data stt.
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INPTR := $007F
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VARNAM := $0081 ; Name of variable
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VARPNT := $0083 ; Addr of variable
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FORPNT := $0085
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TXPSV := $0087 ; Used in INPUT
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LASTOP := $0087 ; Scratch flag used in FRMEVL
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CPRTYP := $0089 ; >,=,< flag in FRMEVL
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TEMP3 := $008A
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FNCNAM := $008A
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DSCPTR := $008C
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DSCLEN := $008F ; used in GARBAG
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JMPADRS := $0090 ; gets "jmp ...."
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LENGTH := $0091 ; used in GARBAG
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ARGEXTENSION := $0092 ; FP extra precision
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TEMP1 := $0093 ; save areas for FAC
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ARYPNT := $0094 ; used in GARBAG
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HIGHDS := $0094 ; pntr for BLTU
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HIGHTR := $0096 ; pntr for BLTU
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TEMP2 := $0098
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TMPEXP := $0099 ; used in FIN (EVAL)
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INDX := $0099 ; used by array rtns
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EXPON := $009A ; "
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DPFLG := $009B ; flags dec pnt in FIN
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LOWTR := $009B
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EXPSGN := $009C
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FAC := $009D ; main floating point accumulator
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VPNT := $00A0 ; temp var ptr
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FACSIGN := $00A2 ; holds unpacked sign
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SERLEN := $00A3 ; holds length of series - 1
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SHIFTSIGNEXT := $00A4 ; sign extension, right shifts
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ARG := $00A5 ; secondary FP accumulator
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ARGSIGN := $00AA
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SGNCPR := $00AB ; flags opp sign in FP routines
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FACEXTENSION := $00AC ; FAC extension byte
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SERPNT := $00AD ; pntr to series data in FP
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STRNG1 := $00AB
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STRNG2 := $00AD
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PRGEND := $00AF
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CHRGET := $00B1
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CHRGOT := $00B7
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TXTPTR := $00B8
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RNDSEED := $00C9
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LOCK := $00D6 ; no user access if > 127
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ERRFLG := $00D8 ; $80 if ON ERR active
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ERRLIN := $00DA ; line # where error occurred
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ERRPOS := $00DC ; TXTPTR save for HANDLERR
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ERRNUM := $00DE ; which error occurrred
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ERRSTK := $00DF ; stack pntr before error
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TRCFLG := $00F2
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TXTPSV := $00F4
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CURLSV := $00F6
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REMSTK := $00F8 ; stack pntr before each stt.
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