Hotbit
Encyclopedia
The Hotbit HB-8000 was a MSX
MSX
MSX was the name of a standardized home computer architecture in the 1980s conceived by Kazuhiko Nishi, then Vice-president at Microsoft Japan and Director at ASCII Corporation...

1 home computer
Home computer
Home computers were a class of microcomputers entering the market in 1977, and becoming increasingly common during the 1980s. They were marketed to consumers as affordable and accessible computers that, for the first time, were intended for the use of a single nontechnical user...

 marketed by Epcom, and developed by the Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

ian subsidiary of Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese corporation Sharp
Sharp Corporation
is a Japanese multinational corporation that designs and manufactures electronic products. Headquartered in Abeno-ku, Osaka, Japan, Sharp employs more than 55,580 people worldwide as of June 2011. The company was founded in September 1912 and takes its name from one of its founder's first...

, in mid-1980s. The MSX machines were very popular in Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...

 at the time, and they virtually killed all the other competing 8 bit microcomputer
Microcomputer
A microcomputer is a computer with a microprocessor as its central processing unit. They are physically small compared to mainframe and minicomputers...

s in the Brazilian market.

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
Read-only memory
Read-only memory is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware .In its strictest sense, ROM refers only...

 slightly modified to solve an ASCII table compatibility issue with the other popular Brazilian MSX, the Gradiente Expert
Gradiente Expert
The Expert, made by Gradiente Eletrônica was the second and last MSX home computer launched in the Brazilian market, in mid-1980s...

.

Technical specifications

CPU Zilog Z80
Zilog Z80
The Zilog Z80 is an 8-bit microprocessor designed by Zilog and sold from July 1976 onwards. It was widely used both in desktop and embedded computer designs as well as for military purposes...

A @ 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 pixel
Pixel
In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....

s, 16 colours, 32 sprite
Sprite (computer graphics)
In computer graphics, a sprite is a two-dimensional image or animation that is integrated into a larger scene...

s
Sound General Instrument AY-3-8910
General Instrument AY-3-8910
The AY-3-8910 is a 3-voice Programmable Sound Generator designed by General Instrument, initially for use with their 16-bit CP1610 or one of the PIC1650 series of 8-bit microcomputers...

 (PSG), 3 voices, white noise
White noise
White noise is a random signal with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth at any center frequency...

Ports 2 joystick
Joystick
A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks, also known as 'control columns', are the principal control in the cockpit of many civilian and military aircraft, either as a center stick or...

 connectors, TV out, sound out, tape recorder
Tape recorder
An audio tape recorder, tape deck, reel-to-reel tape deck, cassette deck or tape machine is an audio storage device that records and plays back sounds, including articulated voices, usually using magnetic tape, either wound on a reel or in a cassette, for storage...

 connector, parallel port
Parallel port
A parallel port is a type of interface found on computers for connecting various peripherals. In computing, a parallel port is a parallel communication physical interface. It is also known as a printer port or Centronics port...

, 2 cartridge slot
Slot
Slot may refer to:* A narrow opening through which an object can pass, for example in a:** Vending machine slot** Slot machine, a type of casino game* Slot, a space for a container on a ship, usually expressed as a 20' or 40' slot Slot may refer to:* A narrow opening through which an object can...

s
Storage tape recorder
Tape recorder
An audio tape recorder, tape deck, reel-to-reel tape deck, cassette deck or tape machine is an audio storage device that records and plays back sounds, including articulated voices, usually using magnetic tape, either wound on a reel or in a cassette, for storage...

 (1200/2400 bps
BPS
BPS can stand for:In science, mathematics and technology*Base pairs, a measure of length of DNA using the number of nucleotide pairs*Basis points, equal to one one-hundredth of a percentage point...

) or one or two external 5¼" disk drive (360 KB)

Peripherals

  • HB-100: joystick
    Joystick
    A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. Joysticks, also known as 'control columns', are the principal control in the cockpit of many civilian and military aircraft, either as a center stick or...

  • HB-2400: tape recorder
    Tape recorder
    An audio tape recorder, tape deck, reel-to-reel tape deck, cassette deck or tape machine is an audio storage device that records and plays back sounds, including articulated voices, usually using magnetic tape, either wound on a reel or in a cassette, for storage...

  • HB-3000 or HB-3001: external modem
    Modem
    A modem is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original digital data...

  • HB-6000: 5¼" disk drive (slim height), 360 KB
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