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This mini forum is intended to provide a simple means of discussion about the Hitachi  S1 pong. If you want to share your own experience or memories, or add relevant information about this system: post a message!

  Click Here to add a message in the forum


Saturday 18th November 2017
Murray (Sydney, Australia)
The Hitachi MB-6890 Peach

I now have two hitachi MB-6890K computers, I would like to contact anyone who has any more for sale or parts (or an S1).
Any info about them and some software would be great as well!

Thursday 26th May 2016
Rusty (Australia)

Craig - it probably had my hard disk interface card in it. We didn''t sell many. I reverse engineered the os/9 level 2 card that was needed for os/9. It did the ram memory mapping as well as extra ram. I probably have my sketches somewhere. The S1 was a stunning piece of hardware in its day - it was full of custom ics as compared with the mb6890 which was pretty well all standard ics.

Friday 15th November 2013
CraigM (Australia)

Just came accross this old thead. I too had a Hitachi peach and ended up with a S1 as well. They were sold in Australia. Was a great little beast of a box. I ended up purchasing OS9 from Hitachi Japan. The only issue is that out of the box it couldn''t read other 5.25" floppy disks from other OS9 systems. My brother who was a Flex/OS9 freak ended up re-writing some of the device drivers so I could read/write disks off his various systems. Was way ahead of it''s time imho. Ended up selling it for a pitance in the end :(


Tuesday 23rd November 2010
Roger D (California)

My family had one of these, growing up in Australia in the 1980''s. In fact, it''s still there and as far as I know still works!

Tuesday 1st February 2005
Leon Howell (Oregon, USA)

Could this be another OS-9 system, like the Fujitsu's?

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