# Search results

1. ### I thought a segment table had 4 segments and looked something like

Re: segmentation Thanks. That was really helpful. I'm watching some free online videos on operating systems, and it's great because it's free and good, but you can't ask the instructor questions. For anyone interested...
2. ### I thought a segment table had 4 segments and looked something like

I thought a segment table had 4 segments and looked something like this: \begin{array}{ccc} \mbox{Seg ID# } &\mbox{Base }& \mbox{Limit} \\ \mbox{0 (code) } &0\mbox{x}4000& 0\mbox{x}0800 \\ \mbox{1 (data) } &0\mbox{x}4800& 0\mbox{x}1400 \\ \mbox{2 (shared) } &0\mbox{x}\mbox{F}000 &...
3. ### 32 bits process and more than 4 GB of RAM

Just to be clear, it was my mistake saying fsin was on the 8086: hamster143 never said that.
4. ### 32 bits process and more than 4 GB of RAM

I guess doubling the number of bits is nice, so 4, 8, 16, 32, 64.... if that's what you mean by the nature of the power of 2. IPv4 is 32 bits, and you want powers of 8 for whole bytes or hexadecimal numbers, so 128 bits makes sense. However, 64 bits will give you 2^32 times more addresses than...
5. ### 32 bits process and more than 4 GB of RAM

I have seen that 0x prefix before, but I don't know what it means. If you have just D9FE, then that looks like a 16-bit instruction. If it is 0D90FE, then that's 24-bits. Why is it split up into two parts like that (0xD9 and the 0xFE)? At the computer store I saw a single 8 GB laptop RAM...
6. ### 32 bits process and more than 4 GB of RAM

If you have a 32 bit processor, does that mean it is useless to have more than 4 GB of RAM, since you wouldn't be able to address those additional locations? So with a 64 bit processor, technically you could buy as much RAM that fills 4 EB (exabytes)? Why does it jump from 32 bits to 64...
7. ### How ISPs work

Thanks, that was helpful. I have the luxury of not having to need to know about computers and technology at the level you understand it (professional) to operate in life, but just to satisfy my curiosity, so your answer sounds good by my ears!
8. ### How ISPs work

Thanks for the reply. Unfortunately, the technical details are a bit over my head. I'm in no way wanting to start a small ISP in real life (I clearly don't understand the technical side of networking at all). I just wanted to know how the networks agree to hook up with each other. I read on...
9. ### How ISPs work

I'm trying to understand how ISPs agree to connect to each other by considering a hypothetical situation: Suppose I wanted to start my own ISP in a small town. Would I have to pay to connect to another network that is already connected to the internet (hence that would make me connected to the...