mirror of
https://github.com/fadden/6502bench.git
synced 2024-11-29 10:50:28 +00:00
192 lines
6.4 KiB
Plaintext
192 lines
6.4 KiB
Plaintext
; Copyright 2018 faddenSoft. All Rights Reserved.
|
|
; See the LICENSE.txt file for distribution terms (Apache 2.0).
|
|
;
|
|
; Sources:
|
|
; What's Where in the Apple, by William F. Luebbert
|
|
; S-C DocuMentor: Applesoft, by Bob Sander-Cederlof
|
|
|
|
*SYNOPSIS Applesoft BASIC addresses and constants
|
|
|
|
BAS_USRVEC @ $0A 3 ;USR() command vector
|
|
BAS_CHARAC @ $0D ;used by string utility
|
|
BAS_ENDCHR @ $0E ;used by string utility
|
|
BAS_VALTYP @ $11 2 ;flag for last FAC operation ($00=num, $FF=str)
|
|
BAS_SUBFLG @ $14 ;subscript flag ($00=allowed, $80=not)
|
|
BAS_HCOLOR1 @ $1C ;hi-res color mask
|
|
BAS_COUNTH @ $1D ;hi-res high-order byte of step for line
|
|
BAS_HBASL @ $26 ;base address for hi-res drawing (lo part)
|
|
BAS_HBASH @ $27 ;base address for hi-res drawing (hi part)
|
|
BAS_HMASK @ $30 ;hi-res graphics on-the-fly bit mask
|
|
BAS_LINNUM @ $50 2 ;line number (2b)
|
|
BAS_TEMPPT @ $52 2 ;temporary point (2b)
|
|
BAS_INDEX @ $5E 2 ;temp (stack) pointer for moving strings (2b)
|
|
BAS_TEXTTAB @ $67 2 ;pointer to start of Applesoft program (2b)
|
|
BAS_VARTAB @ $69 2 ;pointer to start of Applesoft variables (2b)
|
|
BAS_ARYTAB @ $6B 2 ;pointer to start of Applesoft array space (2b)
|
|
BAS_STREND @ $6D 2 ;pointer to end of numeric storage (2b)
|
|
BAS_FRETOP @ $6F 2 ;pointer to end of string storage (2b)
|
|
BAS_MEMSIZE @ $73 2 ;HIMEM (2b)
|
|
BAS_CURLIN @ $75 2 ;current line number (2b)
|
|
BAS_OLDLIN @ $77 2 ;last line executed (2b)
|
|
BAS_OLDTEXT @ $79 2 ;old text pointer (2b)
|
|
BAS_DATLIN @ $7B 2 ;current line # from which data is being read (2b)
|
|
BAS_DATPTR @ $7D 2 ;points to mem from which data is being read (2b)
|
|
BAS_VARNAM @ $81 2 ;holds last-used variable's name (2b)
|
|
BAS_VARPNT @ $83 2 ;pointer to last-used variable's value (2b)
|
|
BAS_FORPNT @ $85 2 ;general pointer (2b)
|
|
BAS_JMPADRS @ $90 3 ;jump address; $90 is set to $4C (3b)
|
|
BAS_TEMP1 @ $93 ;fp math register
|
|
BAS_HIGHDS @ $94 2 ;block copy pointer (2b)
|
|
BAS_HIGHTR @ $96 2 ;block copy pointer (2b)
|
|
BAS_TEMP2 @ $98 ;fp math register
|
|
BAS_LOWTR @ $9B 2 ;general pointer (2b)
|
|
BAS_FAC @ $9D 6 ;floating point accumulator (6b)
|
|
BAS_FACMO = $A0 ;middle-order byte of mantissa of FAC
|
|
BAS_FACLO = $A1 ;low-order byte of mantissa of FAC
|
|
BAS_FACSIGN @ $A2 ;single byte sign of FAC
|
|
BAS_ARG @ $A5 6 ;secondary floating point accumulator (6b)
|
|
BAS_STRNG1 @ $AB 2 ;pointer to a string (2b)
|
|
BAS_STRNG2 @ $AD 2 ;pointer to a string (2b)
|
|
BAS_PRGEND @ $AF 2 ;pointer to end of program (2b)
|
|
BAS_CHRGET @ $B1 ;get next character or Applesoft token
|
|
BAS_CHRGOT @ $B7 ;get next, but don't advance TXTPTR
|
|
BAS_TXTPTR @ $B8 2 ;points at next char or token (2b)
|
|
BAS_RND @ $C9 5 ;floating point random number (5b)
|
|
BAS_AUTORUN @ $D6 ;set to $80 to auto-run
|
|
BAS_ERRFLG @ $D8 ;$80 if onerr active
|
|
BAS_HPAG @ $E6 ;hi-res page to draw on ($20 or $40)
|
|
BAS_SCALE @ $E7 ;hi-res graphics scale factor
|
|
BAS_HSHAPE @ $E8 2 ;hi-res shape table pointer (2b)
|
|
BAS_FIRST @ $F0 ;used for lo-res plot coordinates
|
|
BAS_SPEEDZ @ $F1 ;controls text output speed
|
|
BAS_ORMASK @ $F3 ;mask for output control
|
|
BAS_REMSTK @ $F8 ;stack pointer saved before each statement
|
|
|
|
BAS_AMPERV @ $03F5 3 ;JMP to function that handles Applesoft '&' cmds
|
|
|
|
;
|
|
; Useful Applesoft routines.
|
|
; TODO: there are many more
|
|
;
|
|
BAS_ERROR @ $D412 ;print error based on X-reg
|
|
BAS_FRMNUM @ $DD67 ;evalute expression at TXTPTR, result into FAC
|
|
BAS_SYN_ERROR @ $DEC9 ;throw SYNTAX ERROR
|
|
BAS_CHKCOM @ $DEBE ;checks TXTPTR for comma
|
|
BAS_ILLQ_ERROR @ $E199 ;throw ILLEGAL QUANTITY ERROR
|
|
BAS_GETADR @ $E752 ;convert FAC to 2-byte integer in LINNUM
|
|
BAS_GETBYT @ $E6F8 ;gets byte, in X/FACLO
|
|
BAS_HFNS @ $F6B9 ;get hi-res x/y for hplot
|
|
|
|
;
|
|
; Applesoft BASIC tokens.
|
|
;
|
|
*TAG Applesoft-Tokens
|
|
TOK_END = $80
|
|
TOK_FOR = $81
|
|
TOK_NEXT = $82
|
|
TOK_DATA = $83
|
|
TOK_INPUT = $84
|
|
TOK_DEL = $85
|
|
TOK_DIM = $86
|
|
TOK_READ = $87
|
|
TOK_GR = $88
|
|
TOK_TEXT = $89
|
|
TOK_PR = $8a
|
|
TOK_IN = $8b
|
|
TOK_CALL = $8c
|
|
TOK_PLOT = $8d
|
|
TOK_HLIN = $8e
|
|
TOK_VLIN = $8f
|
|
TOK_HGR2 = $90
|
|
TOK_HGR = $91
|
|
TOK_HCOLOR = $92
|
|
TOK_HPLOT = $93
|
|
TOK_DRAW = $94
|
|
TOK_XDRAW = $95
|
|
TOK_HTAB = $96
|
|
TOK_HOME = $97
|
|
TOK_ROT = $98
|
|
TOK_SCALE = $99
|
|
TOK_SHLOAD = $9a
|
|
TOK_TRACE = $9b
|
|
TOK_NOTRACE = $9c
|
|
TOK_NORMAL = $9d
|
|
TOK_INVERSE = $9e
|
|
TOK_FLASH = $9f
|
|
TOK_COLOR = $a0
|
|
TOK_POP = $a1
|
|
TOK_VTAB = $a2
|
|
TOK_HIMEM = $a3
|
|
TOK_LOMEM = $a4
|
|
TOK_ONERR = $a5
|
|
TOK_RESUME = $a6
|
|
TOK_RECALL = $a7
|
|
TOK_STORE = $a8
|
|
TOK_SPEED = $a9
|
|
TOK_LET = $aa
|
|
TOK_GOTO = $ab
|
|
TOK_RUN = $ac
|
|
TOK_IF = $ad
|
|
TOK_RESTORE = $ae
|
|
TOK_AMPER = $af
|
|
TOK_GOSUB = $b0
|
|
TOK_RETURN = $b1
|
|
TOK_REM = $b2
|
|
TOK_STOP = $b3
|
|
TOK_ON = $b4
|
|
TOK_WAIT = $b5
|
|
TOK_LOAD = $b6
|
|
TOK_SAVE = $b7
|
|
TOK_DEF = $b8
|
|
TOK_POKE = $b9
|
|
TOK_PRINT = $ba
|
|
TOK_CONT = $bb
|
|
TOK_LIST = $bc
|
|
TOK_CLEAR = $bd
|
|
TOK_GET = $be
|
|
TOK_NEW = $bf
|
|
TOK_TAB = $c0
|
|
TOK_TO = $c1
|
|
TOK_FN = $c2
|
|
TOK_SPC = $c3
|
|
TOK_THEN = $c4
|
|
TOK_AT = $c5
|
|
TOK_NOT = $c6
|
|
TOK_STEP = $c7
|
|
TOK_PLUS = $c8
|
|
TOK_MINUS = $c9
|
|
TOK_MULT = $ca
|
|
TOK_DIV = $cb
|
|
TOK_EXPOP = $cc
|
|
TOK_AND = $cd
|
|
TOK_OR = $ce
|
|
TOK_GREATER = $cf
|
|
TOK_EQUAL = $d0
|
|
TOK_LESSER = $d1
|
|
TOK_SGN = $d2
|
|
TOK_INT = $d3
|
|
TOK_ABS = $d4
|
|
TOK_USR = $d5
|
|
TOK_FRE = $d6
|
|
TOK_SCRN = $d7
|
|
TOK_PDL = $d8
|
|
TOK_POS = $d9
|
|
TOK_SQR = $da
|
|
TOK_RND = $db
|
|
TOK_LOG = $dc
|
|
TOK_EXP = $dd
|
|
TOK_COS = $de
|
|
TOK_SIN = $df
|
|
TOK_TAN = $e0
|
|
TOK_ATN = $e1
|
|
TOK_PEEK = $e2
|
|
TOK_LEN = $e3
|
|
TOK_STR = $e4
|
|
TOK_VAL = $e5
|
|
TOK_ASC = $e6
|
|
TOK_CHR = $e7
|
|
TOK_LEFT = $e8
|
|
TOK_RIGHT = $e9
|
|
TOK_MID = $ea
|
|
; end of tokens
|