I've done a port of the PCD8544 library some times ago, for unknown reasons the lib is not in the main repo.
I've changed it, so it worked with the new SPI library.
It's working on the maple mini with HW SPI and SW SPI. But the display controller is so slow, that I've used DIV8 for HW SPI. Maybe it's still too fast, so change line #218 of pcd8544.cpp if a problem occurs.
But there are far better alternatives for displays than this ugly thing. Look for ILI9163C 128x128 display on ali or ebay, and thanks to victor, we have a superb library for it!
pcd8544.zip (15 KB)