If you're using this for a legacy project, what is your ultimate goal—migrating data or just querying the 8i instance? Also, do you already have the 8i installation files (usually Oracle 8.1.7) available? I can help you decide if virtualization or emulation is the best path for your specific project. Share public link
However, if you need this specific version, you have three paths forward: using the Oracle Software Delivery Cloud, running a virtual machine, or using a compatibility layer. This article provides the legal download source, the installation workaround, and the "link" you actually need.
Here is the direct reality regarding compatibility, where to look, and how to safely run this vintage software today. The Short Answer: Does a Direct Link Exist?