On Feb 5, 11:21 am, DMn2004404 <dmn2004...@gmail.com> 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?
Brandon
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."
Nevermind, it seems that question answered itself when I wrote a
FLUSH.TEST Applesoft program. I stored a 3 in location 768, told the
Apple to PRINT it, then executed the FLUSH command, and told the Apple
to PRINT what was now in location 768 -- and my 3 survived the FLUSH!
Thanks a lot.