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Copyright 1991 David Jurgens |
INT 21,B - Check Standard Input Status
AH = 0B
on return:
AL = 00 if no character available
= FF if character available
- checks STDIN for available characters
- character is not returned
- if Ctrl-Break is detected INT 23 is executed
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| Esc or Alt-X to exit |
int 21,b |
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