There was a download of PD30SIM 5.2 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The software lies within Development Tools, more precisely Debugging Tools.
This software is an intellectual property of Renesas Electronics Corporation. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The following version: 5.2 is the most frequently downloaded one by the program users. The common filename for the program's installer is Pd30sim.exe.
From the developer:
PD30SIM is a simulator debugger for M16C and R8C/Tiny Series.
This product is a simulator debugger which allows you to run and evaluate your application program without any target hardware. It provides a source-level-debugging environment with abundant break features and advanced functions such as coverage measurement and virtual interrupts.
You may want to check out more software, such as Visual LogParser, MKS Toolkit for Win32 or FindBugs, which might be similar to PD30SIM.