Hi,
Okay, here's a blank template S-100 board ...
How to use it with EasyEDA?
After downloading, save it in your favorite EasyEDA work folder
Copy/Paste as your new project name
Then copy it into your new project folder (same name usually)
Then double-click on the file and EasyEDA will open and you can either start adding components to the schematic or just the board, your choice.
It's so Easy!
.