mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-12 17:04:46 +00:00
902 lines
56 KiB
Forth
902 lines
56 KiB
Forth
\ *** Block No. 0 Hexblock 0
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\ *** Block No. 1 Hexblock 1
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\ Target compiler loadscr ks cas 09jun20
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Onlyforth \needs Assembler 2 loadfrom asm.fb
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: c+! ( 8b addr -- ) dup c@ rot + swap c! ;
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' find $22 + @ Alias found
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: search ( string 'vocab -- acf n / string ff )
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dup @ [ ' Forth @ ] Literal - Abort" no vocabulary"
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>body (find IF found exit THEN false ;
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3 &27 thru Onlyforth savesystem meta.com
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cr .( Metacompiler saved as META.COM )
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\ *** Block No. 2 Hexblock 2
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\ Predefinitions loadscreen ks 30 apr 88
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&28 load
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cr .( Predefinitions geladen ...) cr
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\ *** Block No. 3 Hexblock 3
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\ Target header pointers ks 29 jun 87
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Variable tfile tfile off \ handle of target file
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Variable tdp tdp off \ target dp
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Variable displace displace off \ diplacement of code
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Variable ?thead ?thead off \ for headerless code
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Variable tlast tlast off \ last name in target
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Variable glast' glast' off \ acf of latest ghost
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Variable tdoes> tdoes> off \ code addr of last does
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Variable tdodo tdodo off \ location of dodo
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Variable >in: >in: off \ last :-def
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Variable tvoc tvoc off \
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Variable tvoc-link tvoc-link off \ voc-link in target
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Variable tnext-link tnext-link off \ link for tracer
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\ *** Block No. 4 Hexblock 4
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\ Target header pointers ks 10 okt 87
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: there ( -- taddr ) tdp @ ;
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: new pushfile makefile isfile@ tfile !
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tvoc-link off tnext-link off
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$100 tdp ! $100 displace ! ;
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\ *** Block No. 5 Hexblock 5
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\ Ghost-creating ks 07 dez 87
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0 | Constant <forw> 0 | Constant <res>
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| Create gname $21 allot
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| : >heap ( from quan -- ) \ heap over - 1 and + \ align
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dup hallot heap swap cmove ;
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: symbolic ( string -- cfa.ghost )
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count dup 1 $1F uwithin not Abort" invalid Gname"
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gname place BL gname append align here >r makeview ,
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state @ IF context ELSE current THEN @ @ dup @ ,
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gname count under here place 1+ allot align
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here r@ - <forw> , 0 , 0 , r@ here over - >heap
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heap 2+ rot ! r> dp ! heap + ;
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\ *** Block No. 6 Hexblock 6
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\ ghost words ks 07 dez 87
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: gfind ( string -- cfa tf / string ff )
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>r 1 r@ c+! r@ find -1 r> c+! ;
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: ghost ( -- cfa ) name gfind ?exit symbolic ;
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: gdoes> ( cfa.ghost -- cfa.does )
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4 + dup @ IF @ exit THEN
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here <forw> , 0 , dup 4 >heap
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dp ! heap swap ! heap ;
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\ *** Block No. 7 Hexblock 7
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\ ghost utilities ks 29 jun 87
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: g' ( -- acf ) name gfind 0= Abort" ?T?" ;
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: '. g' dup @ <forw> case?
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IF ." forw" ELSE <res> - Abort" ??" ." res" THEN
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2+ dup @ 5 u.r 2+ @ ?dup
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IF dup @ <forw> case?
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IF ." fdef" ELSE <res> - Abort" ??" ." rdef" THEN
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2+ @ 5 u.r THEN ;
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' ' Alias h'
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\ *** Block No. 8 Hexblock 8
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\ .unresolved ks 29 jun 87
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| : forward? ( cfa -- cfa / exit&true )
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dup @ <forw> = 0=exit dup 2+ @ 0=exit drop true rdrop ;
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| : unresolved? ( addr -- f ) 2+
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dup count $1F and + 1- c@ bl =
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IF name> forward? 4+ @ dup IF forward? THEN
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THEN drop false ;
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| : unresolved-words ( thread -- )
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BEGIN @ ?dup WHILE dup unresolved?
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IF dup 2+ .name ?cr THEN REPEAT ;
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: .unresolved voc-link @
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BEGIN dup 4 - unresolved-words @ ?dup 0= UNTIL ;
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\ *** Block No. 9 Hexblock 9
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\ Extending Vocabularys for Target-Compilation ks 29 jun 87
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Vocabulary Ttools
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Vocabulary Defining
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: Vocabulary Vocabulary 0 , here tvoc @ , tvoc ! ;
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Vocabulary Transient tvoc off
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Root definitions
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: T Transient ; immediate
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: H Forth ; immediate
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: D Defining ; immediate
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Forth definitions
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\ *** Block No. 10 Hexblock A
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\ Image and byteorder ks 02 jul 87
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| Code >byte ( 16b -- 8b- 8b+ ) A A xor
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D- A- xchg D+ D- xchg A push Next end-code
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| Code byte> ( 8b- 8b+ -- 16b )
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A pop D- D+ mov A- D- xchg Next end-code
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| : >target ( addr1 -- daddr fcb ) displace @ - 0 tfile @ ;
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Transient definitions
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: c@ ( addr -- 8b ) [ Dos ]
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>target file@ dup 0< Abort" nie abgespeichert" ;
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: c! ( 8b addr -- ) [ Dos ] >target file! ;
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\ *** Block No. 11 Hexblock B
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\ Transient primitives ks 09 jul 87
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: @ ( addr -- n ) H dup T c@ swap 1+ c@ byte> ;
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: ! ( n addr -- ) H >r >byte r@ 1+ T c! r> c! H ;
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: cmove ( from.mem to.target quan -- ) [ Dos ]
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>r >target fseek ds@ swap r> tfile @ lfputs ;
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\ bounds ?DO dup c@ I T c! H 1+ LOOP drop ;
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: here ( -- taddr ) H tdp @ ;
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: here! ( taddr -- ) H tdp ! ;
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: allot ( n -- ) H tdp +! ;
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: c, ( 8b -- ) T here c! 1 allot H ;
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: , ( 16b -- ) T here ! 2 allot H ;
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: align ( -- ) H ; immediate
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: even ( addr1 -- addr2 ) H ; immediate
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: halign H ; immediate
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\ *** Block No. 12 Hexblock C
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\ Transient primitives ks 29 jun 87
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: count ( addr1 -- addr2 len ) H dup 1+ swap T c@ H ;
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: ," H here ," here over dp !
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over - T here swap dup allot cmove H ;
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: fill ( addr quan 8b -- ) H
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-rot bounds ?DO dup I T c! H LOOP drop ;
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: erase ( addr quan -- ) H 0 T fill H ;
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: blank ( addr quan -- ) H bl T fill H ;
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: move-threads H tvoc @ tvoc-link @
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BEGIN over ?dup
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WHILE 2- @ over 2- T ! @ H swap @ swap REPEAT
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Error" some undef. Target-Vocs left" drop ;
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\ *** Block No. 13 Hexblock D
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\ Resolving ks 29 jun 87
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Forth definitions
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: resolve ( cfa.ghost cfa.target -- ) over dup @ <res> =
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IF space dup >name .name ." exists " ?cr
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2+ ! drop exit THEN >r >r 2+ @ ?dup
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IF BEGIN dup T @ H 2dup = Abort" resolve loop"
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r@ rot T ! H ?dup 0= UNTIL
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THEN r> r> <res> over ! 2+ ! ;
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: resdoes> ( acf.ghost acf.target -- ) swap gdoes>
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dup @ <res> = IF 2+ ! exit THEN swap resolve ;
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here 2+ 0 ] Does> dup @ there rot ! T , H ; ' <forw> >body !
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here 2+ 0 ] Does> @ T , H ; ' <res> >body !
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\ *** Block No. 14 Hexblock E
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\ compiling names into targ. ks 10 okt 87
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| : tlatest ( -- addr ) current @ 6 + ;
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: (theader ?thead @ IF 1 ?thead +! exit THEN
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>in @ bl word swap >in ! dup count upper
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dup c@ 1 $20 uwithin not Abort" inval. Tname"
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blk @ $8400 or T align , H
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there tlatest @ T , H tlatest ! there tlast !
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there over c@ 1+ dup T allot cmove align H ;
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: theader tlast off
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(theader ghost dup glast' ! there resolve ;
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\ *** Block No. 15 Hexblock F
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\ prebuild defining words ks 29 jun 87
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| : (prebuild >in @ Create >in !
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r> dup 2+ >r @ here 2- ! ;
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| : tpfa, there , ;
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: prebuild ( addr check# -- check# ) 0 ?pairs
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dup IF compile (prebuild dup , THEN
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compile theader ghost gdoes> ,
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IF compile tpfa, THEN 0 ; immediate
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: dummy 0 ;
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: DO> [compile] Does> here 3 - compile @ 0 ] ;
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\ *** Block No. 16 Hexblock 10
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\ Constructing defining words in Host kks 07 dez 87
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| : defcomp ( string -- ) dup ['] Defining search ?dup
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IF 0> IF nip execute exit THEN drop dup THEN
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find ?dup IF 0< IF nip , exit THEN THEN
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drop ['] Forth search ?dup
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IF 0< IF , exit THEN execute exit THEN
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number? ?dup 0= Abort" ?"
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0> IF swap [compile] Literal THEN [compile] Literal ;
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| : definter ( string -- ) dup ['] Defining search ?dup
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IF 0< IF nip execute exit THEN THEN drop
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find ?dup IF 1 and 0= Abort" compile only" execute exit
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THEN number? 0= Error" ?" ;
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\ *** Block No. 17 Hexblock 11
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\ Constructing defining words in Host ks 22 dez 87
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| : (;tcode r> @ tlast @ T count + ! H ;
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Defining definitions
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: ] H ] ['] defcomp Is parser ;
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: [ H [compile] [ ['] definter Is parser ; immediate
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: ; H [compile] ; [compile] \\ ; immediate
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: Does> H compile (;tcode tdoes> @ ,
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[compile] ; -2 allot [compile] \\ ; immediate
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D ' Does> Alias ;Code immediate H
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\ *** Block No. 18 Hexblock 12
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\ reinterpreting defining words ks 22 dez 87
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Forth definitions
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: ?reinterpret ( f -- ) 0=exit
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state @ >r >in @ >r adr parser @ >r
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>in: @ >in ! : D ] H interpret
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r> Is parser r> >in ! r> state ! ;
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: undefined? ( -- f ) glast' @ 4+ @ 0= ;
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| : flag! ( 8b -- ) tlast @ ?dup 0= IF drop exit THEN
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dup T c@ rot or swap c! H ;
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| : nfa? ( acf alf -- anf / acf ff )
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BEGIN dup WHILE 2dup 2+ T count $1F and + even H =
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IF 2+ nip exit THEN T @ H REPEAT ;
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\ *** Block No. 19 Hexblock 13
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\ the 8086 Assembler ks 29 jun 87
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| Create relocate ] T c, , here ! c! H [
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Transient definitions
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: Assembler H [ Assembler ] relocate >codes ! Assembler ;
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: >label ( 16b -- ) H >in @ name gfind rot >in !
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IF over resolve dup THEN drop Constant ;
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: Label T here >label Assembler H ;
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: Code H theader T here 2+ , Assembler H ;
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\ *** Block No. 20 Hexblock 14
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( Transient primitives ks 17 dec 83 )
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' exit Alias exit ' load Alias load
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' / Alias / ' thru Alias thru
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' swap Alias swap ' * Alias *
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' dup Alias dup ' drop Alias drop
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' /mod Alias /mod ' rot Alias rot
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' -rot Alias -rot ' over Alias over
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' 2* Alias 2* ' + Alias +
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' - Alias - ' 1+ Alias 1+
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' 2+ Alias 2+ ' 1- Alias 1-
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' 2- Alias 2- ' negate Alias negate
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' 2swap Alias 2swap ' 2dup Alias 2dup
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\ *** Block No. 21 Hexblock 15
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\ Transient primitives kks 29 jun 87
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' also Alias also ' words Alias words
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' definitions Alias definitions ' hex Alias hex
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' decimal Alias decimal ' ( Alias ( immediate
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' \ Alias \ immediate ' \\ Alias \\ immediate
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' .( Alias .( immediate ' [ Alias [ immediate
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' cr Alias cr
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' end-code Alias end-code ' Transient Alias Transient
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' +thru Alias +thru ' +load Alias +load
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' .s Alias .s
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Tools ' trace Alias trace immediate
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\ *** Block No. 22 Hexblock 16
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\ immediate words and branch primitives ks 29 jun 87
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: >mark ( -- addr ) T here 0 , H ;
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: >resolve ( addr -- ) T here over - swap ! H ;
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: <mark ( -- addr ) H there ;
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: <resolve ( addr -- ) T here - , H ;
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: immediate H $40 flag! ;
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: restrict H $80 flag! ;
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: | H ?thead @ ?exit ?thead on ;
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: internal H 1 ?thead ! ;
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: external H ?thead off ;
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\ *** Block No. 23 Hexblock 17
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\ ' | compile Alias >name ks 29 jun 87
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: ' ( -- acf ) H g' dup @ <res> -
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IF Error" undefined" THEN 2+ @ ;
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: compile H ghost , ; immediate restrict
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: >name ( acf -- anf / ff ) H tvoc
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BEGIN @ dup WHILE under 2- @ nfa? ?dup IF nip exit THEN
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swap REPEAT nip ;
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\ *** Block No. 24 Hexblock 18
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\ >name Alias ks 29 jun 87
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: >body ( acf -- apf ) H 2+ ;
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: Alias ( n -- ) H tlast off
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(theader ghost over resolve T , H $20 flag! ;
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: on ( addr -- ) H true swap T ! H ;
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: off ( addr -- ) H false swap T ! H ;
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\ *** Block No. 25 Hexblock 19
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\ Target tools ks 9 sep 86
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Onlyforth
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| : .tfield ( taddr len quan -) >r under Pad swap
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bounds ?DO dup T c@ I H c! 1+ LOOP drop
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Pad over type r> swap - 0 max spaces ;
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' view Alias hview
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Ttools also definitions
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| : ?: ( addr -- addr ) dup 4 u.r ." :" ;
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| : @? ( addr -- addr ) dup T @ H 6 u.r ;
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| : c? ( addr -- addr ) dup T c@ H 3 .r ;
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\ *** Block No. 26 Hexblock 1A
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\ Ttools for decompiling ks 9 sep 86
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: s ( addr -- addr+ ) ?: space c? 4 spaces
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T count 2dup + even -rot 18 .tfield ;
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: n ( addr -- addr+2 ) ?: @? 2 spaces dup T @ >name H
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?dup IF T count H ELSE 0 0 THEN
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$1F and $18 .tfield 2+ ;
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: d ( addr n -- addr+n ) 2dup swap ?: 3 spaces
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swap 0 DO c? 1+ LOOP 4 spaces -rot dup .tfield ;
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: l ( addr -- addr+2 ) ?: 6 spaces @? 2+ 14 spaces ;
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: c ( addr -- addr+1 ) 1 d 15 spaces ;
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\ *** Block No. 27 Hexblock 1B
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\ Tools for decompiling ks 29 jun 87
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: b ( addr -- addr+2 ) ?: @? dup T @ H
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over + 6 u.r 2+ 14 spaces ;
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: dump ( addr n -- )
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bounds ?DO cr I 10 d drop stop? IF LEAVE THEN 10 +LOOP ;
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: view T ' >name H ?dup 0=exit 4 - T @ H ?dup 0=exit edit ;
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\ *** Block No. 28 Hexblock 1C
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\ Predefinitions loadscreen ks 29 jun 87
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Onlyforth
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: clear H true Abort" There are ghosts" ;
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1 $B +thru
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\ *** Block No. 29 Hexblock 1D
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\ Literal ['] ?" ." " ks 29 jun 87
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Transient definitions Forth
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: Literal ( n -- ) H dup $FF00 and
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IF T compile lit , H exit THEN T compile clit c, H ;
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immediate
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: Ascii H bl word 1+ c@ state @ 0=exit
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T [compile] Literal H ; immediate
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: ['] T compile lit H ; immediate
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: ." T compile (." ," align H ; immediate
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: " T compile (" ," align H ; immediate
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\ *** Block No. 30 Hexblock 1E
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\ Target compilation ] ks 07 dez 87
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Forth definitions
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| : tcompile ( string -- ) dup find ?dup
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IF 0> IF nip execute exit THEN THEN
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drop gfind IF execute exit THEN number? ?dup
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IF 0> IF swap T [compile] Literal THEN
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[compile] Literal H exit THEN
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symbolic execute ;
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Transient definitions
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: ] H ] ['] tcompile Is parser ;
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\ *** Block No. 31 Hexblock 1F
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\ Target conditionals ks 10 sep 86
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: IF T compile ?branch >mark H 1 ; immediate restrict
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: THEN abs 1 ?pairs T >resolve H ; immediate restrict
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: ELSE 1 ?pairs T compile branch >mark
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swap >resolve H -1 ; immediate restrict
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: BEGIN T <mark H 2 ; immediate restrict
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: WHILE 2 ?pairs 2 T compile ?branch >mark H -2 2swap ;
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immediate restrict
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| : (repeat 2 ?pairs T <resolve H
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BEGIN dup -2 = WHILE drop T >resolve H REPEAT ;
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: UNTIL T compile ?branch (repeat H ; immediate restrict
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: REPEAT T compile branch (repeat H ; immediate restrict
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\ *** Block No. 32 Hexblock 20
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\ Target conditionals Abort" etc. ks 09 feb 88
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: DO T compile (do >mark H 3 ; immediate restrict
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: ?DO T compile (?do >mark H 3 ; immediate restrict
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: LOOP 3 ?pairs T compile (loop
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compile endloop >resolve H ; immediate restrict
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: +LOOP 3 ?pairs T compile (+loop
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compile endloop >resolve H ; immediate restrict
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: Abort" T compile (abort" ," align H ; immediate restrict
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: Error" T compile (error" ," align H ; immediate restrict
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\ *** Block No. 33 Hexblock 21
|
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\ Target does> ;code ks 29 jun 87
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||
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||
| : dodoes> T compile (;code
|
||
H glast' @ there resdoes> there tdoes> ! ;
|
||
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||
: Does> H undefined? T dodoes>
|
||
$E9 c, H tdodo @ there - 2- T ,
|
||
H ?reinterpret ; immediate restrict
|
||
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||
: ;Code H 0 ?pairs undefined? T dodoes> H ?reinterpret
|
||
T [compile] [ Assembler H ; immediate restrict
|
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\ *** Block No. 34 Hexblock 22
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||
\ User ks 09 jul 87
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||
Forth definitions
|
||
|
||
Variable torigin torigin off \ cold boot vector
|
||
Variable tudp tudp off \ user variable counter
|
||
: >user ( addr1 -- addr2 ) T c@ H torigin @ + ;
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||
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||
Transient definitions Forth
|
||
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||
: origin! ( taddr -- ) H torigin ! tudp off ;
|
||
: uallot ( n -- offset ) H tudp @ swap tudp +! ;
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DO> >user ;
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||
: User T prebuild User 2 uallot c, H ;
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\ *** Block No. 35 Hexblock 23
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||
\ Variable Constant Create ks 01 okt 87
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||
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||
DO> ;
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||
: Variable T prebuild Create 2 allot H ;
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||
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||
DO> T @ H ;
|
||
: Constant T prebuild Constant , H ;
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||
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||
DO> ;
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||
: Create T prebuild Create H ;
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||
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||
: Create: T Create ] H end-code 0 ;
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||
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||
\ *** Block No. 36 Hexblock 24
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||
\ Defer Is Vocabulary ks 29 jun 87
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||
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||
DO> ;
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||
: Defer T prebuild Defer 2 allot ;
|
||
: Is T ' >body H state @
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||
IF T compile (is , H exit THEN T ! H ; immediate
|
||
|
||
dummy
|
||
: Vocabulary H >in @ Vocabulary >in !
|
||
T prebuild Vocabulary 0 , 0 ,
|
||
H there tvoc-link @ T , H tvoc-link ! ;
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||
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||
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||
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||
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||
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||
\ *** Block No. 37 Hexblock 25
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||
\ File ks 19 m<>r 88
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||
Forth definitions
|
||
|
||
Variable tfile-link tfile-link off
|
||
Variable tfileno tfileno off
|
||
&45 Constant tb/fcb
|
||
|
||
Transient definitions Forth
|
||
|
||
dummy
|
||
: File T prebuild File here tb/fcb 0 fill
|
||
here H tfile-link @ T , H tfile-link !
|
||
1 tfileno +! tfileno @ T c, 0 , 0 , 0 , 0 , 0 ,
|
||
here dup >r 1+ tb/fcb &13 - allot H tlast @
|
||
T count dup r> c!
|
||
H bounds ?DO I T c@ over c! H 1+ LOOP drop ;
|
||
\ *** Block No. 38 Hexblock 26
|
||
\ : ; compile Host [compile] ks 29 jun 87
|
||
|
||
dummy
|
||
: : H >in @ >in: ! T prebuild : ] H end-code 0 ;
|
||
|
||
: ; 0 ?pairs T compile unnest
|
||
[compile] [ H ; immediate restrict
|
||
|
||
: compile T compile compile H ; immediate restrict
|
||
|
||
: Host H Onlyforth ;
|
||
|
||
: Compiler H Onlyforth Transient also definitions ;
|
||
|
||
: [compile] H ghost execute ; immediate restrict
|
||
|
||
\ *** Block No. 39 Hexblock 27
|
||
\ Target ks 29 jun 87
|
||
|
||
Onlyforth
|
||
|
||
: Target H vp off Transient also definitions ;
|
||
|
||
Transient definitions
|
||
|
||
ghost c, drop
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 40 Hexblock 28
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||
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||
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||
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||
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||
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||
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||
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||
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||
|
||
\ *** Block No. 41 Hexblock 29
|
||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
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||
|
||
\ *** Block No. 42 Hexblock 2A
|
||
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||
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||
|
||
|
||
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||
|
||
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||
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||
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||
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||
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||
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||
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||
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||
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||
|
||
\ *** Block No. 43 Hexblock 2B
|
||
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||
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||
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||
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||
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||
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||
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||
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||
|
||
\ *** Block No. 44 Hexblock 2C
|
||
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||
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||
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|
||
\ *** Block No. 45 Hexblock 2D
|
||
|
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||
|
||
|
||
|
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||
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||
|
||
\ *** Block No. 46 Hexblock 2E
|
||
|
||
|
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|
||
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||
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||
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||
|
||
|
||
|
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||
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||
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||
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||
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||
|
||
\ *** Block No. 47 Hexblock 2F
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 48 Hexblock 30
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 49 Hexblock 31
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
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||
|
||
|
||
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||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 50 Hexblock 32
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 51 Hexblock 33
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
\ *** Block No. 52 Hexblock 34
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
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|
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|