[gforth] / gforth / fi2c.fs  

gforth: gforth/fi2c.fs

Diff for /gforth/fi2c.fs between version 1.6 and 1.7

version 1.6, Wed Dec 23 09:24:38 1998 UTC version 1.7, Sun Jun 20 19:56:47 1999 UTC
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 Variable bswap?  Variable bswap?
 Variable tchars  Variable tchars
 Variable tcell  Variable tcell
   Variable au
   
 : bswap ( n -- n' )  bswap? @ 0= ?EXIT  0  : bswap ( n -- n' )  bswap? @ 0= ?EXIT  0
     over 24 rshift $FF       and or      over 24 rshift $FF       and or
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     ELSE  true abort" No magic found"  THEN      ELSE  true abort" No magic found"  THEN
     1 magicbuf 7 + c@ 5 rshift 3 and lshift tchars !      1 magicbuf 7 + c@ 5 rshift 3 and lshift tchars !
     1 magicbuf 7 + c@ 1 rshift 3 and lshift tcell !      1 magicbuf 7 + c@ 1 rshift 3 and lshift tcell !
       1 magicbuf 7 + c@ 3 rshift 3 and lshift au !
     magicbuf 7 + c@ 1 and 0=      magicbuf 7 + c@ 1 and 0=
     [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !      [ pad off 1 pad ! pad c@ 1 = ] Literal = bswap? !
       ." /* Image with " tcell @ . ." bytes cell, " tchars @ . ." bytes per char and " au @ . ." bytes per address unit */" cr
     rdrop ;      rdrop ;
   
 Create image-header  4 cells allot  Create image-header  4 cells allot
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 : read-header ( fd -- )  : read-header ( fd -- )
     image-header 4 cells rot read-file throw drop      image-header 4 cells rot read-file throw drop
     image-header 2 cells + @ bswap tchars @ *      image-header 2 cells + @ bswap tchars @ * au @ /
     dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars !      dup cell / image-cells ! 1- 8 cells / 1+ bitmap-chars !
     image-cells @ cells allocate throw to image      image-cells @ cells allocate throw to image
     bitmap-chars @ allocate throw to bitmap ;      bitmap-chars @ allocate throw to bitmap ;
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     r@ read-dictionary r@ read-bitmap r> close-file throw ;      r@ read-dictionary r@ read-bitmap r> close-file throw ;
   
 : .imagesize ( -- )  : .imagesize ( -- )
     image-header 3 cells + @ bswap tcell @ / tchars @ * .08x ;      image-header 3 cells + @ bswap tcell @ / tchars @ * au @ / .08x ;
   
 : .relocsize ( -- )  : .relocsize ( -- )
     bitmap-chars @ 1- tchars @ / 1+ .08x ;      bitmap-chars @ 1- tchars @ / 1+ .08x ;

Generate output suitable for use with a patch program
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  Added in v.1.7
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