PS/55, Japanese PS/2


	PS/2 Flag was designed by Louis Ohland

Personal System /55

Multistation 5550.
Maintained by Mr.Tahara

Last update 2006.02.06.
Update History

since 2002.09.07

INDEX

Still Crazy
   Monologue, a sort of...

PS/55 At a glance
PS/55 Diagram
History of PS/55
DOS/V
xxx0 or xxx1 model number
Clock Up
Pictures   Japaneseque
Adapters
Trash, but important
Links not so many
Japanese Tips
   ( for Japanese readers, if any )
Systems
5550 386
5550 486
5540
5510
5521-Y
5530
5538 PS/55E
5535
5545
5560
5570
5580
PC Series
6860 PC720
6886 PC750

Processor Complex
PS/55 Complex ID Matrix
SCSI
IBM SCSI /A
Video
PS/55 DISPLAY ADAPTER
SVGA with Cirrus video chip
Keyboard
5576 keyboard

Model M and others
mainly written in Japanese

Reply
PowerBoard
GETA , Interposer
For 486 System
For 386 System
For Pentium Class
IC DRAM CARD

PS/55 is the name of Microchannel computers once sold by IBM Japan. Some models were analogous to PS/2 and the others were designed by IBM Japan and sold mainly inside Japan.
Main purpose of this site is introducing Japanese unique MCA computers and adapters to Non Japanese MCA freaks. Japanese readers who want to know about PS/55s, I recommend you to visit FIBMJ Message Bulletin Board #4, PS/55 & PS/2, held by @Nifty. The bulletin board #4 is seemed to be inactive now, but you can get log files in LZH format. As far as I can see, the Big Blue Japan does not provide any information about their great products.

All information stored in following pages are mostly based on my experiences and information from various members of @Nifty MCA Forum. Please keep in mind that I'm not an engineer nor a programmer, hence there would be some, or many, misunderstandings about MCA and computers..
I'm not responsible for any damage or any inconvenience brought through the information written in my pages.

Image of this site has been stolen from the web site created by Louis Ohland, an incredible MCA man.
For detailed information about PS/2, check his web site which is now mirrored by many MADs. If you need basic and general information about MCA, check Peter Wendt's Web site. If you need more information or reference images for any specific PS/55 models, please feel free to email me ( unspam adjustment needed ).

Great thanks to All members of the Bulletin Board #4 in FIBMJ @Nifty.
and