Port, PortW and PortD

Previous: Mem, MemW, MemL, and MemD Statements

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TMT Pascal Language Description

Pascal Language Structure

Statements

Port, PortW and PortD

TMT Pascal implements three predefined arrays to directly access 80x86 CPU data ports:

  Port, PortW, and PortD.

Port, PortW, and PortD are one-dimensional arrays, and each element represents a data port whose port address corresponds to its index.

Each component of Port is a Byte
Each component of PortW is a Word
Each component of PortD is a DWORD.

When a value is assigned to a component of Port, PortW or PortD, the value is output to the selected port. When a component of Port, PortW or PortD is referenced in an expression, its value is input from the selected port.


Mem, MemW, MemL, and MemD Statements	Table of Content	Repeat Statement

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