INPORTD Function

X = INPORTD(port)

Reads a 32-bit double-word from port and returns it.

Note

Only use on devices that specify double-word port access.

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How to read it

• Reads four consecutive bytes from the port as a 32-bit value.
• Common for PCI configuration space.

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Examples

REM Read PCI config data
D = INPORTD(&CFC)
PRINT D

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Notes

• Most modern devices prefer MMIO; only use when the hardware requires 32-bit port access.

See also:
INPORT · INPORTW · INPORTQ · OUTPORTD