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

[Arne Vajhøj]

On 11/3/2021 7:55 PM, Lawrence D’Oliveiro wrote:
> 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.

Yes.

PTD$ user mode library ---> some VMS kernel code ---> driver code

Arne