Hotbit
The Hotbit HB-8000 is an MSX home computer developed and sold by the Brazilian subsidiary of Sharp Corporation through its EPCOM home computer division in mid-1980s. The MSX machines were very popular in Brazil at the time, and they virtually killed all the other competing 8 bit microcomputers in the Brazilian market.[1]
 | |
| Type | Home computer |
|---|---|
| Release date | November 1985 |
| Discontinued | 1988 |
| Operating system | MSX BASIC, MSX-DOS, CP/M |
| CPU | Zilog Z80A @ 3.58 MHz |
| Memory | 64 KB–512 KB (max.) |
Versions 1-1.2
The Hotbit had three versions: 1.0 and 1.1 with gray and white case and 1.2, with a black case and a ROM slightly modified to solve an ASCII table compatibility issue with the other popular Brazilian MSX, the Gradiente Expert.
Technical specifications
| CPU | Zilog Z80A @ 3.58 MHz |
| RAM | 64 KB |
| VRAM | 16 KB (TMS9928NL) |
| ROM | 32 KB |
| Keyboard | mechanic, 73 keys (with 4 cursor keys), reset key |
| Display | text: 40×24 rows; graphics: 256×192 pixels, 16 colours, 32 sprites |
| Sound | General Instrument AY-3-8910 (PSG), 3 voices, white noise |
| Ports | 2 joystick connectors, TV out, sound out, tape recorder connector, parallel port, 2 cartridge slots |
| Storage | tape recorder (1200/2400 bps) or one or two external 51⁄4" disk drive (360 KB) |
Peripherals
Serial interface for external Modem HB-3000.
- HB-100: joystick
- HB-2400: tape recorder
- HB-3000 or HB-3001: external modem
- HB-3600: Dual disk drive controller and power supply. Sold in a bundle with one HB-6000 drive
- HB-4000: 80 columns card with the V9938 VDP inside
- HB-4100: 64KB RAM expansion
- HB-6000: 51⁄4" disk drive (slim height), 360 KB
Notes
- Hotbit at old-computers.com
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