Actually dug through because I only had a vague recollection. So the Pi-Cromite version I remembered has been discontinued. However, there is a MMBasic for Linux that cribs some code from that project. And, it can be compiled for the Raspberry Pi. I might venture to suggest that this might be one of the most fully featured Basic implementations that can found for the Raspberry Pi. Link here: https://github.com/thwill1000/MMB4L