| [Overview][Procedures and functions][Index] | 
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 | Set permission on IO ports | |
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 | Set I/O privilege level | |
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 | Read data from a PC port | |
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 | Read bytes from a PC port | |
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 | Read longints from a PC port | |
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 | Read Words from a PC port | |
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 | Write data to PC port | |
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 | Write byte to PC port | |
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 | Write longint to PC port. | |
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 | Write Word to PC port |