Ah! Good call. I didn't even think to compare it to ABC ROMs.
It's very similar indeed to the MOS ROM from the Acorn Business Computer:
https://mdfs.net/System/ROMs/AcornMOS/ABM/MOS200
Infact, the only difference is "Acorn business computer" has been patched to "Acorn Video Computer " (with 3 trailing spaces)
Dave
Statistics: Posted by LinuxJedi — Thu Mar 28, 2024 5:16 pm