Posted by Vampier on Thu 18 Oct 04:42
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- #***********************************************
- #* Basic Reader (version 0.1)
- #*
- #* A special thanks to Vincent van Dam for
- #* giving me permission to translate his
- #* script into TCL
- #***********************************************
- # Helper Functions
- proc byte {word} {
- return [peek $word]
- }
- proc word {word} {
- return [expr {[peek [expr $word+1]]*256+[peek $word]}]
- }
- proc getLineNumber {addr} {
- #return "\n[word [expr $addr+2]] "
- return "\n0x[format %x [word $addr]] > [word [expr $addr+2]] "
- }
- proc listing {} {
- set token1 [list "" "END" "FOR" "NEXT" "DATA" "INPUT" "DIM" "READ" "LET" "GOTO" "RUN" "IF" "RESTORE" "GOSUB" "RETURN" "REM" "STOP" "PRINT" "CLEAR" "LIST" "NEW" "ON" "WAIT" "DEF" "POKE" "CONT" "CSAVE" "CLOAD" "OUT" "LPRINT" "LLIST" "CLS" "WIDTH" "ELSE" "TRON" "TROFF" "SWAP" "ERASE" "ERROR" "RESUME" "DELETE" "AUTO" "RENUM" "DEFSTR" "DEFINT" "DEFSNG" "DEFDBL" "LINE" "OPEN" "FIELD" "GET" "PUT" "CLOSE" "LOAD" "MERGE" "FILES" "LSET" "RSET" "SAVE" "LFILES" "CIRCLE" "COLOR" "DRAW" "PAINT" "BEEP" "PLAY" "PSET" "PRESET" "SOUND" "SCREEN" "VPOKE" "SPRITE" "VDP" "word" "CALL" "TIME" "KEY" "MAX" "MOTOR" "BLOAD" "BSAVE" "DSKO$" "SET" "NAME" "KILL" "IPL" "COPY" "CMD" "LOCATE" "TO" "THEN" "TABC" "STEP" "USR" "FN" "SPCL" "NOT" "ERL" "ERR" "STRING$" "USING" "INSRT" "" "VARPTR" "CSRLIN" "ATTR$" "DSKI$" "OFF" "INKEY$" "POINT" ">" "=" "<" "+" "-" "*" "/" "^" "AND" "OR" "XOR" "EQV" "IMP" "MOD" "\\" "" "" "{escape-code}"]
- set token2 [list "" "LEFT$" "RIGHT$" "MID$" "SGN" "INT" "ABS" "SQR" "RND" "SIN" "LOG" "EXP" "COS" "TAN" "ATN" "FRE" "INP" "POS" "LEN" "STR$" "VAL" "ASC" "CHR$" "PEEK" "VPEEK" "SPACE$" "OCT$" "HEX$" "LPOS" "BIN$" "CINT" "CSNG" "CDBL" "FIX" "STICK" "STRIG" "PDL" "PAD" "DSKF" "FPOS" "CVI" "CVS" "CVD" "EOF" "LOC" "LOF" "MKI$" "MK$" "MKD$" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" "" ""]
- set go 1
- set addr [word 0xf676]
- set listing ""
- set tok ""
- append listing [getLineNumber $addr];incr addr 4
- while {$go==1} {
- set tok ""
- if {[byte $addr]>0x80 && [byte $addr]<0xff} {set tok [lindex $token1 [expr [byte $addr]-0x80]]} else {
- if {[byte $addr]==0xff} {incr addr;set tok [lindex $token2 [expr [byte $addr]-0x80]]} else {
- if {[byte $addr]==0x3a} {
- set forward 0
- incr addr;
- if {[byte $addr]==0xa1} {set tok "ELSE"; set forward 1}
- if {[byte $addr]==0x8f} {set tok "'"; set forward 1}
- if {$forward==0} {set tok ":"; decr addr}
- } else {
- set forward 0
- if {[byte $addr]==0x0} {incr addr;set tok [getLineNumber $addr];incr addr 3; set forward 1}
- if {[byte $addr]==0x0B} {incr addr;set tok [format "&O%o" [word $addr]];incr addr; set forward 1}
- if {[byte $addr]==0x0C} {incr addr;set tok [format "&H%x" [word $addr]];incr addr; set forward 1}
- if {[byte $addr]==0x0D} {set tok "(TODO GOSUB)";incr addr 2; set forward 1}
- if {[byte $addr]==0x0E} {incr addr;set tok [format "%d" [word $addr]];incr addr; set forward 1}
- if {[byte $addr]==0x0F} {incr addr;set tok [format "%d" [byte $addr]]; set forward 1}
- if {[byte $addr]==0x1C} {incr addr;set tok [format "%d" [word $addr]];incr addr; set forward 1}
- if {[byte $addr]==0x1D} {incr addr;set tok "(TODO: Single)"; set forward 1}
- if {[byte $addr]==0x1F} {incr addr;set tok "(TODO: Double)"; set forward 1}
- if {[byte $addr]>0x11 && [byte $addr]<0x1a} {set tok [expr [byte $addr]-0x11]; set forward 1}
- if {$forward==0} {set tok [format "%c" [byte $addr]]}
- }
- }
- }
- incr addr
- append listing $tok
- if {[word $addr]==0 || $addr>=0xffff} {set go 0}
- }
- return $listing
- }
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