version 1.6, 1998/12/23 09:24:38
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version 1.7, 1999/06/20 19:56:47
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Line 26 Create magicbuf 8 allot
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Line 26 Create magicbuf 8 allot
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Variable bswap? |
Variable bswap? |
Variable tchars |
Variable tchars |
Variable tcell |
Variable tcell |
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Variable au |
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: 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 |
Line 39 Variable tcell
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Line 40 Variable tcell
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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 ! |
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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? ! |
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." /* Image with " tcell @ . ." bytes cell, " tchars @ . ." bytes per char and " au @ . ." bytes per address unit */" cr |
rdrop ; |
rdrop ; |
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Create image-header 4 cells allot |
Create image-header 4 cells allot |
Line 49 Variable bitmap-chars
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Line 52 Variable bitmap-chars
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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 ; |
Line 82 Variable bitmap-chars
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Line 85 Variable bitmap-chars
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r@ read-dictionary r@ read-bitmap r> close-file throw ; |
r@ read-dictionary r@ read-bitmap r> close-file throw ; |
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: .imagesize ( -- ) |
: .imagesize ( -- ) |
image-header 3 cells + @ bswap tcell @ / tchars @ * .08x ; |
image-header 3 cells + @ bswap tcell @ / tchars @ * au @ / .08x ; |
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: .relocsize ( -- ) |
: .relocsize ( -- ) |
bitmap-chars @ 1- tchars @ / 1+ .08x ; |
bitmap-chars @ 1- tchars @ / 1+ .08x ; |