O - Output to an I/O Port

Output a byte of data to a 16-bit I/O Port

Syntax:

──── O  ────  port  ────  data  ──────────────────────────────

Parameters:

port

16-bit I/O port address
data
A byte of data expressed numerically. This may be specified as a simple numeric expression.

Results & Notes:

The byte is sent to the requested I/O port.

Note:

This command may be used to set the debugging communication port parameters from the Kernel Debugger initialisation command file (KDB.INI) as in the following example:

-------------------------------------------------------------------------------Set COM2 DTR line (assume standard port assignment for COM2 that is, 2f8):
##O 2fc 1

Set COM1 DTR line (assume standard port assignment for COM1 that is, 3f8):
##O 3fc 1
-------------------------------------------------------------------------------

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