Okay So I have this
100000 10100 11000 1000 0000 0000 0000
This section of the binary is assumed to be sign extended
1000 0000 0000 0000
so it turns to this
0xFFFF8000
why?!?
and why is the value of that sign extended decimal number -2048?
isn't it 2^15?
My guess is because you have either defined or cast that portion of the field as signed.Originally Posted by NoobieGecko
Todd
Mainframe assembler programmer by trade. C coder when I can.
What type of variable are you assigning this binary conversion to? If you look at the limits.h file this may help you decide what type(size) to assign your binary converted value to in decimal.
What does the source code look like?
oh i just wanted to know how sign extension works, it's actually a mips instruction
loadbyte
lb $24,-2048($20)
my guess is that "load byte" has to have a sign extended immediate
so 1000 0000 0000 0000 == 0xffff8000... i guess ~_~
just studying for a midterm :O
