The HB-F9P was unusual in the sense that it did not come with a built in floppy disk drive, instead it had a built in software suite "Memovision" that would run automatically unless a program cartridge was inserted in the cartridge slot or the GRAPH key was pressed during booting. Memovision could store data on the special HBI-55 (battery backed RAM) "data cartridge"  that Sony originally had developed, for their HB-55 and HB-75 MSX1 computers. These systems contained a simple built in program called the "Personal Databank".  Memovision was a continuation of the same idea, but much extended, as it contained stuff like a (birthday) calendar with alarm system, a "family databank" (a combination of a text editor and database) a built in calculator and a timer and time calculator, all rendered in pseudo 3D style.
Of the HB-F9 there were many different localized variants produced:
- HB-F9P, with QWERTY-keyboard layout was designed for the PAL-standard, and meant for European countries, except Germany, France, Spain and the former Soviet Union.
- HB-F9R, had a Russian keyboard.
- HB-F9D, had a QWERTZ-keyboard for the German market
- HB-F9F, had an AZERTY-keyboard for the French market, and was designed for the SECAM-standard.
- HB-F9S, had a modified QWERTY-keyboard for the Spanish market.
- MSX-Engine: S-1985
- real-time clock with trickle-charged battery backup
- "HB-F9P at oldcomputers.com". Archived from the original on 2010-11-20. Retrieved 2011-11-10.
- "Sony data cartridge" (PDF). Archived from the original (PDF) on 2012-03-31. Retrieved 2011-11-10.
- "Screen shot of the Personal Databank of the HB-55 and HB-75". Archived from the original on 2012-04-25. Retrieved 2011-11-13.
- site explaining the HBI-55 in combination with the HB-55
- Screenshots of Memovision