QBasic 1.1: WAIT Statement

Explanation

Suspends program execution until a specified bit pattern is input from an input port.

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

You are here: References Overview > QBasic 1.1 Commands List > WAIT Statement

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

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