◄Contents►  ◄Index►  
─────────────────────────────────────────────────────────────────────────────
INP returns a byte read from a hardware I/O port.
OUT sends a byte to a hardware I/O port.

INP(port%)
OUT port%, data%

    ■ port%     A number in the range 0 through 65,535 that identifies
                the port.
    ■ data%     A numeric expression in the range 0 through 255 to send
                to the port.

Example:
    x% = INP(&H3FC)          'Read COM1 Modem Control Register.
    OUT &H3FC, (x% XOR 1)    'Change Data Terminal Ready bit.

See Also    ◄WAIT►
──────────────────────────────────────────────────────────────────────────────
 © Copyright Microsoft Corporation, 1987-1992. All rights reserved.
   Converted from qbasic.hlp with DosHelp/HelpConvert