qb45qck.hlp (Table of Contents; Topic list)
CALL INTERRUPT Statement QuickSCREEN
  QuickSCREEN      Details      Example      Contents      Index
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CALL INTERRUPT - a statement that allows BASIC programs to perform
                 DOS system calls
Syntax
  CALL INTERRUPT(interruptnum,inregs,outregs)
  CALL INTERRUPTX(interruptnum,inregs,outregs)
    ■ interruptnum, an integer expression which has a value between
      0 and 255, is a DOS interrupt number
    ■ inregs contains the register values before the interrupt is performed
      (see Details for how to declare a user-defined type which will
      contain these register values)
    ■ outregs contains the register values after the interrupt