OUTPORT Keyword

OUTPORT port, value

Writes the low 8 bits of value to an I/O port.

Note

Use the correct width for the target device; wrong widths can cause faults or misconfiguration.

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How to read it

• Sends one byte via port-mapped I/O.

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Examples

REM Reset the keyboard controller
OUTPORT &64, &FE

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Notes

• Some ports require delays or status checks between writes.
• Be cautious: writes may trigger immediate hardware actions.

See also:
OUTPORTW · OUTPORTD · OUTPORTQ · INPORT