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Assembly Source File  |  1991-08-22  |  246 b   |  22 lines
  1.     include    asm.inc
  2.  
  3.     public    isprint
  4.  
  5.     .code
  6.  
  7. ;;    isprint
  8. ;
  9. ;    entry    AL    character
  10. ;    exit    Zf    if printable character (including space)
  11. ;
  12. isprint proc
  13.     cmp    al,' '
  14.     jb    isg1
  15.     cmp    al,'~'
  16.     ja    isg1
  17.     cmp    al,al
  18. isg1:    ret
  19. isprint endp
  20.  
  21.     end
  22.