I think only the japanese versions include it.
Probably, as it is very rare to find ebay sellings of non-Japanese HB-75 including HBI-55.
What about the HB-55P? With or without HBI-55?
According to the link site both. And that explains why this cartridge is easy to find second-hand in Japan.
According to the link site both. And that explains why this cartridge is easy to find second-hand in Japan.
What is confirmed by the fac! that the European manual is for HB-55P and HB-75P ..... so, no HBI-55 except with the Japanese models
That joyplate looks a lot like the Philips joycard.
and 3 other ones .... I am wondering who is the original creator....
I'm looked for info. In the MSX magazine 1984-01 page 104, it says the HBI-55 cartridge is included with the HB-55. So there is no longer any doubt.
Accessories:
Data cartridge 4K
Basic manual
Address note, schedule, memo
User's Manual
TV RF cable (75 ohm)
Cassette cable
It's amazing because the cartridge does not work with the included software without RAM extension, same for the Two specific Basic instructions, and there is only one cartridge port.
That would not make sense then. Perhaps it's a mistake in the article?
No, because the HBI-55 is in the HB-55 box (see Korean review already mentioned!)
I found a HB-55 firmware in BlueMSX Roms. It has no function for Data cartridge nor Basic instruction. The menu remains the same as in the following video even when the cartridge is inserted.
https://www.youtube.com/watch?v=3zutxTp41ug
So the cartridge was there for other more general uses. Which makes it understandable that it is included. Sony must have made software that uses this cartridge.
Don't forget that there are 2 versions of the HB-55. The version you have tried with blueMSX is version 1.
More info in the wiki: https://www.msx.org/wiki/Sony_HB-55
The explanation is not what you think.