[z-machine] More questions.

[Cedric Knight]

Johnny Billquist <bqt@Update.UU.SE> wrote:
> On Thu, 10 Mar 2005, David Kinder wrote:
>
> > Johnny Billquist wrote:
> >> output_stream with strem #3 is documented as being available in
> >> version 5 and later, but Bureaucracy is a version 4 game which
> >> uses it.
> >
> > Ummm, no:
> >
> >  7.1.2: Versions 3 and later supply these and two other output
> >  streams, numbered 3 (Z-machine memory) and 4 (a script file of
the
> >  player's whole commands and of individual keypresses as read by
> > read_char).
> >
> > See also the section on @output_stream.
>
> Look at chapter 14 and 15 instead... That is where it's wrong.
>

You mean
5 output_stream number table
should be
3 output_stream number table
?

I think you're right, the opcode listing is in conflict with 7.1.2.  I
think the person to check this with is Jason Penney.  In the
slowly-being-adopted Z-Spec 1.1 (draft 9), it says

Output streams
--------------
Section 7.1.2 is incorrect - output streams 3 and 4 are present only
in Version 5 and later.

I've never analysed any Infocom files.  All I know is that when the
Inform library 6/7 started using @output_stream for inferring
prepositions, it didn't check for version.

CK