I have the problem that I have the amount of ram a pc has and I check if it is more than 8MiB.

The problem is now, that if the PC has more than 2GiB (I think so, my test pc has 3.25GiB) the code works as if it uses negative numbers.

What have I to use to compare 2 numbers w/o negative numbers.

At the moment I use:

mmm, lets clarify, you want to compare unsigned integers?

In such case your code is almost enough, just change jnge with jnae. The "above" and "below" are for unsigned comparisons and "lower" and "greater" for signed comparisons.

Thanks for your reply, it works now.

I´m now a assembly programmer for 7 years, but I had never problems with signed and unsigned integers. And now I know the difference between above/below and less/greater.

But why...

Actually my approach to any problem is using UNsigned first and if absolutely neccessary - I will try to make it UNsigned - and if I can't... well, then I will use signed Politics

Btw, why make it so hard (I know the syntax and mnemonics allow this, but:

Above or Equal means that RAM is at least 8MB (computer mega , so MiB)
No carry means that it isn't less than 8MB which is also the same, but a little more complicated.

Not greater and not equal wow - this messes even me up

I hope this clarified a bit.