by @dots_tb - signs PSOne MCR files to create VMP files for use with Sony Vita/PSP and exports MCR files from VMP
Drag and drop a PSOne MCR save file onto the program. It will generate a VMP that you may use with your Vita/PSP.
You may also drag and drop a VMP file and extract the contained MCR file for editing or sharing.
Or use CMD: ./vita-mcr2vmp <memorycard.mcr|SCEVMC*.VMP>