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yann64andClaude Opus 5.5 b274874139 All machines linked to their forum thread (full comment import)

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title, categories, types, origins, years, cpus, params

title

categories

types

origins

years

cpus

params

Hitachi MB-6885 / Basic Master Jr

Computers

Home Computer

Japan

1982

6800

name

image

company

company_name

specs

tabs

forum_thread

photos

adverts

oc_id

source

MB-6885 / Basic Master Jr

/media/museum/photos/hitachi_basicmasterjr_1.jpg

/companies/hitachi

Hitachi

label	value
NAME	MB-6885 / Basic Master Jr

label	value
MANUFACTURER	Hitachi

label	value
TYPE	Home Computer

label	value
ORIGIN	Japan

label	value
YEAR	1982

label	value
BUILT IN LANGUAGE	Unknown

label	value
KEYBOARD	Full-stroke keyboard

label	value
CPU	6800

label	value
SPEED	0,8 MHz

label	value
CO-PROCESSOR	Unknown

label	value
RAM	16 KB

label	value
VRAM	Unknown

label	value
ROM	18KB

label	value
TEXT MODES	32 x 24

label	value
GRAPHIC MODES	64 x 48 / 256 x 192

label	value
COLORS	8

label	value
SOUND	3 octaves

label	value
I/O PORTS	Printer port, Cassette MT interface, Expansion bus(mainly used for the color extension box)

label	value
POWER SUPPLY	Build-in PSU

label	value
PRICE	89,800 yens

photos

adverts

334

title	subtitle	text	image
COMPLETE SET-UP			/media/museum/photos/hitachi_mb6885_1.jpg

title	subtitle	text	image
AN ADVERTISING FOR THE BM JR			/media/museum/pubs/bmjr.jpg

329

url	date
https://web.archive.org/web/20230501140028/http://www.old-computers.com/museum/computer.asp?c=329	2023-05-01

MB6885 was successor of MB6881 (Basic Master Level II 2).

This machine had 256x192 graphics feature. Color display was also available with optional color-graphics adapter. These new feature was great in "Basic Master Level2 series" but not enough in Japanese market.

There isn’t a Video RAM, so both the micro processor and the video interface use the main memory using tricky techniques.

Hitachi thought the MB-6885 as a hobby computer. But the hobby computer market was a fierce battlefield with NEC (PC-6001) , VIC-1001(Commodore) , JR-100 (Panasonic) and etc. MB-6885 was too weak for that battlefield.

Thanks to Hisayuki Nomura for the info

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.

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