Weekend hack idea: Start with #MecrispForth (Mecrisp-Ice / Swapforth) on the Lattice HX8K FPGA and implement a #forth block editor via bootstrapping using the terminal and interpreter. (i.e. build up the editor word by word via the interpreter and image saving without editing the source using a PC resident editor).

The flash storage would "host" the source to the editor as it is being built.

However, cutting and pasting the bootstrapping source to a PC/host resident file (for archival purposes) as I go along would be smart.