NEC PC98 series technical info/support

[misekoy]

hi,

I desperately need some info on programming serial port on PC-98,
running msdos 5.0. I wouldn't mind if the info is in Japanese as I can
try to get someone to translate it. Btw, do you know where can I get
any

of the following items (in hard/soft copy):
PC-9800 Seried Technical Data Book on CD-ROM
PC-9821 Technical manual(4)
PC-9800 NEWS,Japn PC News,NEC PC-9800 Quick Guide
AT Compatible DOS Application to PC-9800 Series
Application Evaluation for PC-9800 Compatibility

Or is there any website/email that handle programming support for
PC-98 that I can refer to? I try the http://www.pc98.com, suggested by
some users, but is not available anymore... Reaaly appreciate any
helps on this...

Thanks,
misekoy