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Chapter 12: Emulator/Analyzer Interface Commands
modify io_port
If the address range contains an odd number of bytes and a word operation is being
executed, the last word of the address range will be modified. Thus the I/O port
modification will stop one byte after the end of the specified address range.
If an error occurs in writing to I/O ports, the modification is aborted at the address
where the error occurred.
The default is to use the current display memory mode, if one is in effect.
Otherwise the default is to "byte."
The parameters are as follows:
bytes
Modify I/O ports with byte values.
--EXPR--
An expression is a combination of numeric values, symbols, operators, and
parentheses, specifying a memory address. See the EXPR syntax diagram.
thru
This option lets you specify a range of I/O port locations to be modified.
to
This lets you specify values to which the selected I/O port locations will be
changed.
words
Modify I/O port locations with 16-bit values.
,
A comma is used as a delimiter between values when modifying multiple I/O port
addresses.
Examples
modify io_port 0 bytes to 12h <RETURN>
modify io_port data1 thru DATA100 to 0FFH <RETURN>
modify io_port DISPLAY thru DISPLAY+60H bytes to 1 , 2
, 3 , 4 , 5 , 6 <RETURN>
See Also
The copy io_port and display io_port commands.
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