Sony Hit Bit HB-75
| Sony Hit Bit HB-75 | |
|---|---|
 |
|
| Manufacturer | Sony |
| Type | Home computers |
| publication | 1984 |
| processor | Z80 @ 3.58 MHz |
| random access memory | 64 kB |
| graphic | TMS 9918 A |
| Sound | AY-3-8910 |
| Disk | Plug-in modules , audio cassettes |
| operating system | MSX |
| predecessor | HB-10 |
| successor | HB-X01 |
The Sony Hit Bit HB-75 from the Japanese company Sony is a home computer that was launched on the market in 1984.
description
This is an MSX computer. The device is operated by a Zilog Z80A processor with a clock frequency of 3.58 MHz. The Hit Bit HB-75 has 64 KByte RAM plus 16 KByte video RAM and 32 KByte ROM plus 16 KByte firmware . A Texas Instruments TMS9918A is used as the graphics chip , the sound chip is a General Instrument AY-3-8910 . The device has a typewriter keyboard ( QWERTY ) with 73 keys. The following interfaces are available as I / O ports: 2 × module ports, 2 × Centronics , 1 × cassette, 1 × RGB, 1 × video, 1 × HF (antenna), 2 × joystick .
The HB-75 has more RAM than the Sony Hit Bit HB-55 , which was launched at the same time and has only 16 KByte memory. Like all software from the Hit-Bit series, this model has built-in software, namely an address management system, a notebook and an appointment calendar. The computer was delivered with a BASIC manual, which was aimed at beginners.
At that time, the HB-75 was often compared to the C64 , which had the same storage capacity but had a faster floppy drive and preinstalled software. It was unable to establish itself in the German-speaking countries.
expenditure
- HB-75, Japanese edition
- HB-75F, with a French AZERTY keyboard
- HB-75D, German edition
- HB-75P, general PAL version
literature
- Dietmar Eirich, MSX - The first home computer standard , Wilhelm Heyne Verlag, Munich, 1985, ISBN 3-4534-7052-4