QBasic 1.1: WAIT Statement


WAIT portnumber%, AND-expression% [,XOR-expression%]

Description / Parameter(s)

portnumber% The number of the input port.
AND-expression% An integer expression that WAIT combines with the bit pattern value using an AND operator. When the result is nonzero, WAIT stops monitoring the port.
XOR-expression% Can be used to turn line bits on and off in the bit pattern before the AND operation is applied.


'Reads the interrupt controller port address &H20. 'Press any key to continue. WAIT &H20, 1