sdcc z80 trouble with asm complie

[Tony]

Hi guys,

im really struggling with sdcc and trying to include my asm lines, up to the point where i cant even get a simple load to acc to compile. what am i doing wrong here.. its highly frustrating..

with the below i get: Error: machine specific addressing or addressing mode error

the problem lies at line 51 which in the asm below is: "ld a, $41"

any help would be much appreciated!!

            int main(){
                __asm
                ld a, $41
                out ($68), a    
                __endasm;
            }

[Raphael Neider]

Did you try replacing $41 with plain 41 or #41? I have no clue regarding z80 assembler, but encoding literals is often tool specific...

Good luck,
Raphael

[Tony]

Hi Raphael,

thanks for the reply. if i write #65 it compiles and i have 3E 41 in my hex file.. = load 0x41 to acc. this is ok. does not work for just 41, the problem is, the asm compiler i used in the past used $ as the hex literal directive. i will have to go back now and convert all my asm files where i refer to hex to decimal to use in sdcc. what i cant work out is how to write a literal hex in sdcc asm?

[Philipp Klaus Krause]

Am 10.03.2014 09:59, schrieb Tony:

Hi Raphael,

thanks for the reply. if i write #65 it compiles and i have 3E 41 in my
hex file.. = load 0x41 to acc. this is ok. does not work for just 41,
the problem is, the asm compiler i used in the past used $ as the hex
literal directive. i will have to go back now and convert all my asm
files where i refer to hex to decimal to use in sdcc. what i cant work
out is how to write a literal hex in sdcc asm?

0x65

Philipp

[Philipp Klaus Krause]

Am 11.03.2014 11:59, schrieb Philipp Klaus Krause:

Am 10.03.2014 09:59, schrieb Tony:

Hi Raphael,

thanks for the reply. if i write #65 it compiles and i have 3E 41 in my
hex file.. = load 0x41 to acc. this is ok. does not work for just 41,
the problem is, the asm compiler i used in the past used $ as the hex
literal directive. i will have to go back now and convert all my asm
files where i refer to hex to decimal to use in sdcc. what i cant work
out is how to write a literal hex in sdcc asm?

0x65

Philipp

Sourceforge even interprets special symbols when they come in an email.
So I don't know how to state the correct notation exlicitly. But the
notation Raphel suggested is the correct way to do it.

Philipp

[Raphael Neider]

Hmmm, I don't know. Would #0x41 work for you/the assembler? Replacing $<hexit><hexit> with #0x<hexit><hexit> seems like an easy task for Perl ;-) Well, converting the hexadecimal value to decimal should also be possible using Perl, but the might adversely affect legibility of the code...

Have fun,
Raphael