[Overview][Procedures and functions] |
Read bytes from a PC port
Source position: line 0
function ReadPortB( |
Port: LongInt |
):Byte; |
Port: LongInt; |
var Buf; |
Count: LongInt |
); |
The procedural form of ReadPortBreads Countbytes from port Portand stores them in Buf. There must be enough memory allocated at Bufto store Countbytes.
The functional form of ReadPortBreads 1 byte from port Band returns the byte that was read.
Note that you need permission to read a port. This permission can be set by the root user with the FpIOPermcall.
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Set permission on IO ports |
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Read data from a PC port |
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Read Words from a PC port |
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Read longints 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 |