Insofar as graphics went, it's important to keep in mind that prior to the early 1990s, low-level details about how different video cards actually worked weren't necessarily widely known, or implemented in a manner that was hardware-identical to a PS/2 VGA card.
Case in point: VGA (as implemented on the PS/2) actually had support for tiled graphics (in the ...
Here's one possible approach (which I haven't tried myself):
Create a TRS/80 CPM boot disk
Transfer BBC BASIC to the TRS/80 separately
Creating a TRS/80 CPM Boot Disk
David Keil's TRS-80 Emulator is able to use both emulated virtual floppy drives, and actualy hardware floppy drives, using the host PC's floppy interface. It's system requirements are ...