Hello

I can do the following in masm:

cmp bx, offset es:nameproc

How can do the same in fasm?

Thank you

One answer:

or just

Hi,gunblade:
on FASM means that compares bx and the content of the es:nameporc, but the on MASM means that complares bx and the offset distance es:nameproc.

Unfortunately, FASM don't support the syntax for example "cmp bx, es:namespace", we only use it on call and jmp instructions. for example: call segment:offset or jmp segment:offset.

Do you think it?

Thanks.

Kevin Zheng

Whoop, read a mov instead of a lea there..
sorry, your right, there goes my attempt to optimizze 2 lines into 1

what?!? what should that code do? what is it in binary code. processor has no such instruction as "cmp bx,es:nameproc".

Thank you Kevin_Zheng, I will test it as sortly as i can. It's a pitty that "cmp bx, offset es:nameproc" doesn't work (similar in nasm).

I used it recentely in TSRs.

OFFSET gives the number position

Cheers

ehhz...
,
what should cmp word register, segment:offset do?

bug in masm?

someone assemble it and send me it's opcode, i'm very curious. because there just ISN'T any such instruction (maybe "cmp reg,imm" with semgent prefix but if i am right this is invalid opcode)

Too fast typing I really want to say that "cmp bx, es:procname" doesn't work in fasm, the same in nasm.

Now I haven't got my code. But if I don't remember wrong, for deinstall a tsr we need to know that no one has change interrupt vector that we have change first, so because of "procname" is resident in ES segment and bx has the interrupt vector value for now, if both aren't equal, we can't remove our tsr.

OFFSET belong to preprocessor and gives the offset number. What we can see in a debuger is this number.

I'm sorry for my english

ah, now i understand, if you have more same names in different segment then segment name should choose one. this wouldn't be possible in FASM because "es" is segment register and during compilation it isn't clear which program segment (if any) it points to. in MASM this is ?solved? by ASSUME, but i don't like this. i think you can't have same names in different segments in FASM. But at least we stay clear.