Re: Date and time not updating in Applesoft BASIC program?

[DMn2004404 <dmn2004404@gmail.com>]

On Feb 5, 12:50 pm, DMn2004404 <dmn2004...@gmail.com> wrote:
> On Feb 5, 12:25 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:
>
>
>
> > DMn2004404 wrote:
> > > And, if my program should include storing values in memory locations
> > > (such as losses in location 768, ties in location 769, and wins in
> > > location 770), what will happen to those values when the program
> > > encounters the FLUSH command?
>
> > Nothing whatsoever.  Page 3 is safe from just about everything.
>
> > > Michael J. Mahon wrote:
>
> > >>Michael J. Mahon wrote:
>
> > >>>DMn2004404 wrote:
>
> > >>>>Here's the scenario: I have written an Applesoft BASIC program that
> > >>>>uses a No-Slot Clock in my Enhanced Apple //e. I have RUN the program
> > >>>>and had it execute a routine that displays the system date and time.
> > >>>>When the program reaches this routine at, let's say, 6:32 PM, it says
> > >>>>the time is 6:32 PM. So far, it appears the date and time routine is
> > >>>>working properly. But, let's say I've had this same program running
> > >>>>continuously for, say, two minutes, and the time is now 6:34 PM, but
> > >>>>when I send the computer back to the date and time routine, the
> > >>>>program says the time is still 6:32 PM. What's the deal here, and is
> > >>>>there any way to rectify it?
>
> > >>>You didn't mention how your Applesoft program was getting the time,
> > >>>but I'm guessing that it's PEEKing it from the locations in the
> > >>>ProDOS global page.
>
> > >>>ProDOS only updates this location when a ProDOS file operation is
> > >>>executed.  If you do a PRINT CHR$(4)"verify" command, ProDos will
> > >>>update the global page time and date.
>
> > >>Sorry, I misremembered--the proper command to update the date/time
> > >>on the global page without messing anything else up is FLUSH.
>
> > >>So just insert:
>
> > >>1234 PRINT CHR$(4)"FLUSH"
>
> > >>(with the appropriate line number, of course) before you read the
> > >>global page bytes and they will be up-to-date.  No machine language
> > >>needed.
>
> > -michael
>
> > NadaNet 3.1 for Apple II parallel computing!
> > Home page:  http://home.comcast.net/~mjmahon/
>
> > "The wastebasket is our most important design
> > tool--and it's seriously underused."
>
> Everything except an "OpenApple-Control-Reset," right?
>
> Brandon

And of course, by that, I also mean anything else that would trigger a
reboot, including a "PR#6".

Brandon