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

[mspangler <mspangler@gemsi.com>]

On Jan 30, 5:38 pm, "Michael J. Mahon" <mjma...@aol.com> 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?
>

If you just want to tickle the time; this note from way back will
work;"

ProDOS doesn't read the clock continuously.  It reads the clock
whenever it
gets asked to do something for which a time might be necessary.

You can force ProDOS to read the clock and update the time locations
by
calling the MLI routine GET_TIME from machine language:
     JSR $BF00     ;Call ProDOS MLI
     DFB $82        ;$82 = GET_TIME
     DW  $0000     ;GET_TIME doesn't use a parameter list
     ...           ;Your code continues here

Thus, to read the clock from BASIC, first POKE the following machine
language routine into memory (put it anywhere you have a few free
bytes--it's
relocatable):
     32,0,191,130,0,0,96

Then, whenever you need to read the time, CALL the machine language
routine, and PEEK the time out of the ProDOS global page. "

This is what I use. It works on a GS too.  If you search this
newsgroup for Get-time you'll find the source of the above code.