Gradiente Expert

Gradiente Expert

Infobox computer
Photo =
Type = home computer
Released = December, 1985
Discontinued = 1991
Processor = Zilog Z80A/MSX Engine T7937A @ 3.58 MHz
Memory = 64 KiB–256 KiB (max.)
OS = MSX BASIC, MSX-DOS, CP/MThe Expert, made by "Gradiente Eletrônica" (to date best known as a game console and Hi-Fi equipment company) was the second and last MSX home computer launched in the Brazilian market, in mid-1980s. Relesead one month after Epcom's Hotbit (just in time for 1985's Christmas), the Expert model XP-800 was an inferior clone of the "National CF-3000", with a computer case ressembling a stereo system, a detached keyboard with a proprietary connector, no caps lock LED and no reset key. [http://www.old-computers.com/MUSEUM/computer.asp?c=807 Gradiente Expert Plus] at old-computers.com]

The Expert XP-800 was followed by the Expert GPC-1 ("Gradiente Personal Computer") in 1987, and by Expert Plus and Expert DD Plus (a system with a built-in 720 KiB 3½" disk drive) in 1988. The Expert users waited in vain for a MSX2 machine, but Gradiente never produced it and descontinued the MSX line in 1991.pt icon- [http://www.paulovaz.net/paulovaz/index2.php?option=com_content&do_pdf=1&id=69 The MSX in Brazil] ]

Versions XP-800/GPC-1

The two first versions had a graphite case and socketed chips, who provoked a chronical problem: when the machine heated, the chips frequently pulled out and the system "frozen". Also, the GPC-1, released in 1987, had a ROM slightly modified to solve an ASCII table compatibility issue with the other popular Brazilian MSX, the Sharp's Hotbit.

Versions Plus/DD Plus

The two last versions had a black case and the problematic socketed chips was replaced by an ASIC one. Nevertheless, the RAM was mapped to a secondary slot and, although it was straight by the MSX standards, caused a lot of crashes with programs who searched for memory in the wrong place. It not contributed to add popularity to both Plus versions.

Technical specifications

Peripherals

* DR-1 ("data-corder"): tape recorder
* JS-1: joystick
* MM-12: 12" monochrome monitor
* TA-1: TV adapter
* TM-1: 1200/75 bps modem with a RS-232C port

Notes

External links

*pt icon- [http://www.mci.org.br/micro/outros/expert.html Gradiente Expert]
*pt icon- [http://ftp.mma.com.br/micros/expertplus.htm Gradiente Expert Plus/DD Plus]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Gradiente Expert — Tipo microordenador Comercializado diciembre de 1985 Descatalogado …   Wikipedia Español

  • Expert (disambiguation) — An expert is someone widely recognized as a reliable source of technique or skill.Expert may also refer to:* Expert (company), a Norwegian consumer electronics retail chain * Expert (Russian magazine), Russia s leading business weekly magazine *… …   Wikipedia

  • Sharp Hotbit — Tipo microordenador Comercializado noviembre de 1985 Descatalogado …   Wikipedia Español

  • List of home computers by category — This is a list of home and office computers by category where the main category is the home computer s CPU wordlength (8/16/32/64 bits) and the subcategory is the specific CPU used in each machine. Computers with more than one CPU are listed… …   Wikipedia

  • MSX — Para otros usos de este término, véase Midcourse Space Experiment. Sony HB 75 MSX (1984) MSX es el nombre de un estándar de ordenador doméstico comercializado durante los años 1980 y principio de los años 1990. Fue definido por Kazuhiko Nishi y… …   Wikipedia Español

  • Hotbit — Infobox computer Photo = Type = home computer Released = November, 1985 Discontinued = 1988 Processor = Zilog Z80A @ 3.58 MHz Memory = 64 KiB ndash;512 KiB (max.) OS = MSX BASIC, MSX DOS, CP/MThe Hotbit HB 8000 was a MSX1 home computer marketed… …   Wikipedia

  • MSX Engine — Se llama MSX Engine a una serie de chips LSI que integraban las funciones de CPU, VDP, chip de sonido y control de puertos I/O en diferentes generaciones de ordenadores MSX. El primer chip MSX Engine, el Toshiba T7775 no incluía las funciones de… …   Wikipedia Español

  • BrMSX — Тип Эмулятор Разработчик Ricardo Bittencourt Операционная система MS DOS Последняя версия v2.10 (1 февраля, 2003) …   Википедия

  • Список компьютеров стандарта MSX — Основная статья: MSX Бытовые компьютеры стандарта MSX производились множеством компаний по всему миру с 1983 года по начало 1990 х. Многие из компаний производили несколько моделей компьютеров. Они могут различаться наличием дополнительного… …   Википедия

  • List of MSX compatible computers — This is a (very incomplete) List of MSX compatible home computers and game computers. MSX*Al Alamia (Kuwait, Saudi Arabia) **Sakhr AX100 (made by Yamaha) **Sakhr AX170 (made by Yamaha) ** * Canon ** V8 ** V10 ** V20 ** * Casio **MX 10 **PV 7 **PV …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”