This is a quite popular MSX 1 computer. As soon as it was available (in Europe at least), a lot of extensions were already available too, making the HB-75 a quite complete system. It is also a quite well designed computer.
There's a built-in piece of software (Personal Data Bank) available on startup and composed of an agenda (scheduler), a memo, an address manager and a transfer utility. And you could save your work via a special RAM cartridge.
There is a ROM of 48 KB : 16 KB for the integrated software and 32 KB for the Basic. The RAM is composed of 64 KB and 16 KB for the video. You can connect a disk drive controller to the second cartridge slot which is at the back of the computer, the primary cartridge slot being on top.
Foreign models where named HB-75F for France, HB-75D for Germany or HB-75P for PAL models...
Please consider donating your old computer / videogame system to Old-Computers.com or one of our partners from anywhere in the world (Europe, America, Asia, etc.).
Very good and reliable computer, my first home computer ever. The cursor keys were good, but they fail about time because the switches used by Sony, but nowadays are easy to find replacement.
Saturday 10th August 2019
fireb0y (España)
I SELL ONE. SOMEBODY INTERESTED¿
Sunday 18th November 2012
CARLOS (SPAIN)
You can connect a disk drive to *ANY* of the cartridge slots, same as on any MSX, not specifically 2nd slot...
Monday 18th June 2012
MsxKun
NAME
Hit-Bit 75
MANUFACTURER
Sony
TYPE
Home Computer
ORIGIN
Japan
YEAR
1984 ?
BUILT IN LANGUAGE
Microsoft Extended Basic (MSX Basic V1.0) Personal Databank sofware built-in
KEYBOARD
QWERTY mechanical keyboard AZERTY for the HB-75F
CPU
Z80A
SPEED
3,6 Mhz
RAM
64 kb, 30 kb left for the programming
VRAM
16 kb
ROM
32 kb + 16kb for built-in software
TEXT MODES
Mode 0 : 40 x 24 Mode 1 : 32 x 24
GRAPHIC MODES
Mode 2 : 256 x 192 with 16 colors (Hires mode) Mode 3 : 64 x 48 with 16 colors (Multi colour mode) 32 sprites
COLORS
16
SOUND
General Instruments AY-3-8910 Programmable Sound Generator 3 channels, 8 octaves
I/O PORTS
2 joystick sockets 2 cardridge slot (1 at the rear) Tape-recorder plug (1200/2400 bauds) RGB video output Centronics interface Monitor video output Scart video output
(France, june 85)
