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CHAPTER 2 DEPENDENCE FUNCTIONS
2.1.4 I/O Port Simulation
This section describes I/O port simulation executed by SOFTUNE Workbench.
■ I/O Port Simulation (Input Port)
There are two types of simulations in I/O port simulation: input port simulation, and output port simulation.
Input port simulation has the following types:
- Whenever a program reads the specified port, data is input from the pre-defined data input source.
- Whenever the instruction execution cycle count exceeds the specified cycle count, data is input to the
port.
To set an input port, use the [Setup] - [Debug Environment] - [I/O Port] menu, or the SET INPORT
command in the Command window.
Up to 4096 port addresses can be specified for the input port. The data input source can be a file or a
terminal. After reading the last data from the file, the data is read again from the beginning of the file. If a
terminal is specified, the input terminal is displayed at read access to the set port.
A text file created by an ordinary text editor, or a binary file containing direct code can be used as the data
input file. When using a text file, input the input data inside commas (,). When using a binary file, select the
binary radio button in the input port dialog.
■ I/O Port Simulation (Output Port)
At output port simulation, whenever a program writes data to the specified port, writing is executed to the
data output destination.
To set an output port, either use the [Setup] - [Debug Environment] - [I/O Port] menu, or the SET OUTPORT
command in the Command window.
Up to 4096 port addresses can be set as output ports. Select either a file or terminal (Output Terminal
window) as the data output destination.
A destination file must be either a text file that can be referred to by regular editors, or a binary file. To
output a binary file, select the Binary radio button in the Output Port dialog.
Note:
The following method is not supported by high-speed simulator debugger.
• Whenever the instruction execution cycle count exceeds the specified cycle count, data is input to
the port.
Furthermore the setting of memory map is necessary to set I/O port. When deleting memory map, I/O
port is also deleted.