Re: Stepping/Tracing AppleSoft calls from the System Monitor

[nexus6gs@applelinks.net (nexus6gs)]

Thanks for the reply's
I did try this with a Apple II Emu Catakig;
Apple II Rom
Boot Dos 3.3. This loads AppleSoft into The LC Card and IntBasic Onboard
Type in a small piece of code @ $800. With no reference to Any Rom
Address's.  
      ldx #$00
loopy txa
      dex
      bne loopy
      brk
Do a PR#1 to send all the output to the printer.
800l the code.
Then do a few 800S's to step though the code.
PR#3 Brings my display back
Quit out of Catakig and load the Printer.html file and take a look at
what happened.
Listing worked...
Stepping does not step correctly or trace correctly. The registers are
not holding the correct data.
Hum.  Seems like the Step/Trace must be trashing the zero-page register
locations. Or just Catakig is doing something wierd.

Looks like I will be pulling my trusty Apple II out of it's Storage Bin.

Thanks again for your thoughts.


Eric <englere.geo@yahoo.com> wrote:

> You can try this: map the ROMs into the LC area and make that active.
> Then wipe out the range from D000 to F7FF - replace with $00 values
> (break command). Then, when a program tries to execute an applesoft
> routine it will break into the monitor.


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