[Info-vax] DECnet Phase IV broken after VSI update

[Lawrence D’Oliveiro]

On Tuesday, November 2, 2021 at 12:05:49 PM UTC+13, Arne Vajhøj wrote:
> To quote the docs: 

I’ve been having a look at this <https://vmssoftware.com/docs/VSI_IO_REF.pdf>. Seems this is a little bit different from a regular kernel driver: you need to use special PTD$xxx calls to open and close instances. Note this in the description of PTD$CREATE: “This channel is only intended to be used for PTD$XXX operations.” So there is some kind of extra layer on top of the kernel driver, and you are not supposed to access the latter directly.

> It may still be a bit different in nature from its Linux counterpart due 
> to the fact that VMS is different from Linux. 

Still, VMS has -- or had -- a sufficiently versatile kernel driver architecture that it could have managed this better.