QBasic 1.1: CALL ABSOLUTE Statement

Explanation

CALL ABSOLUTE Statement

Transfers control to a machine-language procedure.

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Syntax

CALL ABSOLUTE ([argumentlist,] offset%)

Description / Parameter(s)

argumentlist	Arguments passed to a machine-language procedure as offsets from the current data segment.
offset%	The offset from the current code segment, set by DEF SEG, to the starting location of the procedure.

Example


'Calls routine for printing the screen to a local printer.
DIM a%(2)
DEF SEG = VARSEG(a%(0))
FOR i% = 0 TO 2
  READ d%
  POKE VARPTR(a%(0)) + i%, d%
NEXT i%
DATA 205, 5, 203  : ' int 5  retf  'Machine-language code
                                   'for printing screen.
CALL ABSOLUTE(VARPTR(a%(0)))
DEF SEG