This is a special build as it includes a hi-res joytick patch from Tim Lindner that did not make it into this latest release. It’s been manually added as per his request.
Here’s the latest information on what’s new pulled from MAME changelog:
9320: coco3.cpp: Added ILCE / SEP Micro-Sep Model 3 (Mexican Color Computer 3 clone). [Barry Nelson, Tim Lindner]
9406: bus/coco: Added RS-DOS and OS-9 filesystems to floppy controller cartridges. [Nathan Woods]
9412: Added CoCo raw disk format to build scripts. [Nathan Woods]
The MAME CoCo driver now identifies RS-DOS and OS-9 as relevant file systems (#9406) [npwoods]
Adding ‘FORMATS[“COCO_RAWDSK”] = true’ to mess.lua (#9412) [npwoods]
When updating your CoCo-Pi, please make sure to select “Update CoCo-Pi from git repo” and “Run CoCo-Pi fix script” in order for all the changes to be applied. Install the latest MAME package (from the same menu). Select mame-0.242-tlindner-hires-1 as the default version.