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
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(I''''ll write this as a message because "Add Info" does not work)
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.
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.
Thursday 10th December 2020
Hisayuki Nomura (Japan)
I had this one, so I add some information $ Speed : 0.8MHz, VRAM : None(sharing the main memory), I/O ports : Printer port, Cassette MT interface, Expansion bus(mainly used for the color extension box), Power Supply : Build-in PSU As I mentioned, there isn’t a Video RAM, so both the micro processor and the video interface use the main memory using tricky techniques. Its BASIC language is fully compatible with the MB-6880 BASIC Master Level II. In general, it was suitable for beginners. This PC was never a major PC, but it’s my favorite.
Monday 23rd October 2017
Summy
NAME
MB-6885 / Basic Master Jr
MANUFACTURER
Hitachi
TYPE
Home Computer
ORIGIN
Japan
YEAR
1982
BUILT IN LANGUAGE
Unknown
KEYBOARD
Full-stroke keyboard
CPU
6800
SPEED
0,8 MHz
CO-PROCESSOR
Unknown
RAM
16 KB
VRAM
Unknown
ROM
18KB
TEXT MODES
32 x 24
GRAPHIC MODES
64 x 48 / 256 x 192
COLORS
8
SOUND
3 octaves
I/O PORTS
Printer port, Cassette MT interface, Expansion bus(mainly used for the color extension box)
