29 Jun
2007
29 Jun
'07
6:18 p.m.
On 29 Jun 2007 at 17:43, Chris M wrote:
I want to hear from Chuck and Fred on this one.
Anyone can quote from wikipedia (often of dubious value).
There should be plenty of literature still kicking around for the NEC
9801 series. Ran a special (Microsoft-sanctioned) version of MS-DOS
and even Windows NT.
...and at least for DOS, I/O was performed through BIOS ROM calls.
The video was wildly different; I/O port assignments were different;
even diskette formats were different. But it was MS-DOS--and NEC had
almost 70% of the Japanese PC market.
I think some 9801 models even used the NEC V-series (e.g. V70)
processors.
Cheers,
Chuck