Forwarded message follows:
Marteen,
I just ran across the multiple file info in the SDCC
user's manual, which explained the
linking of multiple files. I now seem to be able to use
more than 256 bytes of XDATA in
my program--I set up for 1024 bytes of XRAM.
I'll test the XRAM more rigorously over the next couple
of days, but thanks so much for
your help!!!!!!!!!!!!
Gary
P.S. Gudjon, thanks for your help as well. I was just
not sophisticated enough to
undestand your suggestion!!!!!!!!!!
________________________________ From: Gary Sides
Sent: Monday, September 08, 2008 9:04 PM To:
[EMAIL PROTECTED] Subject: problem
with XDATA and AT89C51ED2
Marteen,
I ran across your reply to my question of a week ago on
the web. Thanks for the
suggestions.
1. I found the _sdcc_exrternal_startup() function and
inserted the statement
AUXR=0x8C;
which should select 1024 bytes as the size of the
XRAM.
2. Should I still return 0 from this function or should
I return a different value?
3. I also found crtxinit.asm and set the value of
DUAL_DPTR to 1 and replaced all
occurences of _DPS to _AUXR1.
4. I assembled crtxinit.asm using ASX8051, which
resulted in the generation of the file
crtxinit.rel.
5. I'm now ready to link crtxinit.rel with the "rest of
my project," but I'm uncertain
how to do this. My project consists only of one source
file and a header file for the
AT89C51ED2 plus the crtxinit.rel file.
Where can I find information on how to link the .rel
file and my project files?
Also, is the _sdcc_external_startup() function called
automatically during the compilation
of my program?
Thanks,
Gary
P.S. I appreciate the time you have taken to answer my
questions!!!!!!!!!
Also, I previously registered as a member of the SDCC
forum, but my registration does not
now seem to be recognized. In addition, the format of
the forum seems to have changed. I
no longer seem to be able to search the forum and
received meaningful hits. I'm a bit
confused over this. Any suggestions would be
appreciated as well.
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