In article
<a6e69e75-0399-4b14-aaa5-604fa9b83...@g10g2000yqh.googlegroups.com>,
datajerk <dataj...@gmail.com> wrote:
[...]
Loader.system. Thanks for the tip.
This is my favorite part:
; That's what it's all about !
lda #<MLI
ldx #>MLI
sta HIMEM
stx HIMEM + 1
If you change:
time_t starttime = time(NULL);
time_t endtime = time(NULL);
col80();
to:
col80();
time_t starttime = time(NULL);
time_t endtime = time(NULL);
Then you'll see my problem. Once col80 is called, the time card
cannot be read. -1 is returned. basic.system and
loader.system--same results.
I compared assembler listings, generated with the -l option:
<http://www.cc65.org/doc/cl65-2.html>
In my example, pusheax (exported from lpush.s) saves the initialized
time before calling col80. In your code, decsp8 allocates the two stack
variables, then col80 is called before the times are initialized.
col80() probably needs to preserve some registers, but I don't know the
runtime well enough to suggest how.
An expedient approach might be to check the machine ID and initialize
the 80-column firmware in the loader, before the runtime gets started.
You wouldn't need to update the Basic global vectors; and you can exit
your code via $3D0, which is set up to invoke the ProDOS bye routine.
Alternatively, you could initialize the firmware in a Basic STARTUP
program that BRUNs the compiled object. Of course, that's what the
loader was designed to avoid. :-)
--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>