> > http://page5.auctions.yahoo.co.jp/jp/auction/e10331760
> What exactly is this cartridge for ??

>From what I have briefly searched...

According to
http://www.itoi.co.jp/attic/time7.html
, this device was released as a subset to Victor HC-95 MSX2 (famous for
having extended CPU). I guess, with this VHD interface stuff, HC-95 could
control VHD (something similar to laser disc but became obsolete soon), such
as superimpose and screen capture.
http://www.geocities.co.jp/SiliconValley-Oakland/4084/p-01.htm suggests
Victor released several other VHD interfaces which were dedicated to HC
series.
http://www02.so-net.ne.jp/~imwyd/apolg1.html says back in 1985, there was a
book describing how to browse VHD disk using  HC-95.

Takamichi


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