From Newsgroup: comp.os.msdos.misc

On Sat, 15 Jun 2019 13:12:11 -0600, Grant Taylor wrote:

I'm talking about TCP INT calls Novell created for their own purposes.
They just picked some unused INT number and built a TCP API on that,
by coding it into their TCP kernel. But who knows what INT they picked,
or how the API looks.

That's what's undocumented. With the right tools, you could discover
and reverse engineer it, but who has that much time.

I bet they are, or at least were, inside of Novell.

Probably. They wrote some apps for their 16-bit TCP kernel, like FTP,
which presumably used the INT API, instead of the DOS socket library
they released to the public. That FTP client still works with Novell
TCP32.

But there's a reasonable chance that information is either gone
or will never see the light of day. Thus it's effectively lost
information.

So much code, so little documentation.

It's always about the money. When the market dies, nobody cares anymore.
All that knowledge goes in the trash.


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