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Chapter 4: Viewing Code and Data
Using Simulated I/O
Special Simulated I/O Symbols
User Program Symbols
The following symbols are user program symbols that are used by the SIMIO
system to process the simulated I/O protocol:
systemio_buf This symbol indicates the start of the Control Address buffer.
Simulated I/O Reserved Symbols
The following names are reserved by the SIMIO system and cannot be used for
your file names. The SIMIO system recognizes these names and uses special
processing to direct the I/O to the proper location:
stdin This name will be replaced by the name stored in the stdin_name. This
name is set via the Stdio_Redirect command.
stdout This name will be replaced by the name stored in the stdout_name.
This name is set via the Stdio_Redirect command.
stderr This name will be replaced by the name stored in the stderr_name.
This name is set via the Stdio_Redirect command.
/dev/simio/keyboard This name refers to the keyboard while the product is
running interactively.
/dev/simio/display This name refers to the stdio display window while the
product is running interactively.
To enable simulated I/O
• Using the command line, enter:
Debugger Execution IO_System Enable
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