I have acquired a Sony MSX HB-501 F (F stands for France, it only defines the keyboard's layout).
It is fully functionnal, I can play games from cartridges on it and it displays MSX-BASIC if no cartridges are inserted.
The problem is that I got it without its original manual, and so I have a hard time figuring out how some features work.
As it was a high-end personal computer at the time, I read that it has a few office programs in ROM, such as an address book and an agenda.
I know that if its in the computer's ROM, the settings must be saved to a data cartridge (there were 4KB data cartridges) or cassette tape.
My only problem being that I don't know how to run those programs from the ROM. Moreover, I'm not even sure there are any program in ROM as I couldn't find any relevant documentation on how to run them, I could only find mentions of their existence.
So, is there really any program stored in ROM on an Sony MSX HB-501 apart from MSX-BASIC? If so, how can I run them?