Am Dienstag, den 18.07.2006, 09:36 -0500 schrieb Gene Daunis:
> Thanks Jim,
>
> I do have the extended instruction set disabled, doesn't help.
<code name="sfraccess.c">
#include <pic18fregs.h>
void foo( int b ) {
PORTAbits.RA3 = 0;
UEP15bits.EPCONDIS = 0;
}
void main( void ) { }
</code>
Compiling this fragment using the current svn snapshot and
sdcc -mpic16 -p18f4550 sfraccess.c
I obtain a .asm file with
; .line 8; sfraccess.c PORTAbits.RA3 = 0;
BCF _PORTAbits, 3
; .line 9; sfraccess.c UEP15bits.EPCONDIS = 0;
BCF _UEP15bits, 3
and a .hex file, which gpdasm -p18f4550 sfraccess.hex shows as
[...]
0000ea: 9680 bcf 0x80, 0x3, 0
0000ec: 967f bcf 0x7f, 0x3, 0
[...]
which is just fine, isn't it?
This might be a... change... in gpasm (it may be a bug, it may be a
feature...).
I use gpasm-051219 beta (some daily snapshot?), probably I should update
to check more recent versions... wait a moment...
Updated to gputils-0.13.3---with bad news: gpdasm now reproduces your
results :-( Even worse, gpasm even silently (!) assembles "bcf
_UEP15bits,3,0" as "bcf _UEP15bits,3,1", though "bcf 0x7f,3,0" remains
correct.
I conclude that gputils have received updated device descriptions which
tell gpasm the the 4550 has SFRs at 0xf80--0xfff but not below.
Consequently, 0xf7f (=UEP15bits) is assumed to be accessed using
"BANKSEL 0xf; bcf 0x7f, 3, 1", only SDCC does not emit the BANKSEL...
Still this is rather an error in (recent) gputils than in sdcc.
Will you file a bug report with gputils or shall I do it?
> I can get close to fixing the problem by enabling mplab compatibility
> (--mplab-comp), but then I get "Error [113] Symbol not previously defined
> (ACCESS)". Is there a way to tell SDCC's assembler to include MicroChip's
> include file <p18f4550.inc>?
Added include <pxxx.inc> to .asm file preamble in my local tree, will
commit after the release (or should this be included?). It
compiles/assembles, but does not solve your problem (unfortunately).
Regards,
Raphael Neider
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