A few months back I had a discussion with Chip regarding a version of Tachyon suitable for incorporating into the P2 BOOT ROM. Not only will TAQOZ allow booting from raw SD sectors but also by FAT32 name. Of course the full power of TAQOZ can be made available if a user connects a serial terminal and interacts with it and not only using "commands" but also "scripts" since this is essentially a non-standard Forth tailor made for the P2 to allow testing of hardware and smartpins etc. Even so, full programs can be typed in line by line or more conveniently by pasting or sending from an editor. Therefore the development environment is not limited to a PC as even phones and tablets have editors and serial terminals. The serial connection can even be via a Bluetooth serial module.
Since it includes SD driver layers and FAT32 along with all the commands/routines you can even think of it a bit like DOS and BATCH files.
Currently I am attempting documentation and full conversion of the higher level Forth source that includes FAT32 so that it can all be integrated into the TAQOZ.spin2 file which can be loaded in one keystroke from PNut. Please, if you want to help with documentation then please sign-in with your Google account so that you can request to edit the document directly or add sections etc rather than just commenting about paragraph formatting. I will start some other documents as well that focus on introductions and examples etc.
Current public documentation
(Google doc for editing
Current file TAZOZ.spin2