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The Original Shareware 1.1
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The Original Shareware (WeMake CDs)(Volume 1.1)(CDs, Inc)(1993).iso
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fpc103.zip
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SAVESCR.SEQ
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1988-06-10
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\ SAVESCR.SEQ Routine to save and restore screen. by Tom Zimmer
decimal
0 constant svseg \ screen save segment
: svinit ( --- ) \ screen save initialization
defers initstuff
0 =: svseg
16000 16 / 1+ alloc 8 =
abort" Could not allocate memory for Screen save routine."
nip =: svseg ;
' svinit is initstuff
\ nestable save and restore up to three (3) times.
: savescr ( --- )
svseg 0= if exit then
svseg 0 2dup 4000 + 12000 cmovel> \ Make a hole in buf
video-seg @ 0 svseg 0 4000 cmovel ; \ & save screen in it.
: restscr ( --- )
svseg 0= if exit then
svseg 0 video-seg @ 0 4000 cmovel \ Restore screen &
svseg 4000 over 0 12000 cmovel ; \ compress buffer.
: recoverscr ( --- ) \ get a copy of the
svseg 0= if exit then \ last saved screen
svseg 0 video-seg @ 0 4000 cmovel ; \ Restore screen