Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations Chriss Miller on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
-
Why won't this bootsector code work?
Thanks Tessa, but unfortunately neither of these code samples worked for me. I'm not sure why. I am using NASM, so I had to change the syntax for 1 line in each of the samples: 4: mov al, cs:[bp+message] -> mov al, [bp+cs:message] and 4: lodsb cs:[si] -> cs lodsb But I don't... -
Why won't this bootsector code work?
Thanks Salem - the link was awesome, just what I needed. I tried setting SS and SP but it didn't seem to help. I DID however come up with a bit of a hack that seems to work. It's not ideal, but at least I think I understand what's going on, which is the important bit (to me, anyway :) ) As it... -
Why won't this bootsector code work?
Hi I am pretty new to assembly. I am trying to write some real mode bootsector code. I am using NASM. I seem to be having trouble understanding how NASM or x86 real mode handle segments and offsets. Or something. In any case, something is going wrong somewhere and I don't understand why. For...
