Going through old exams of my OS prof I got stuck at this question:   RAM size: 1024 bytesEach process has 2048 bytes virtual memoryPages have 256 bytesAdresses are 12 bit long  -How much bits for the offset?8-How much bits are left for the Pagenummer?4  What Pagenummer and offset has the virtual adress 01 11 00 00 00 11?Pagenummer: 7 Offset: 3   However we are given Pagetables that look like this:  Process A:  |Ref. | Mod. | P/A | Pageframe  +-----+------+-----+-----------0 | 1   | 0    | 0   | 31 | 1   | 1    | 0   | 2..| ..  | ..   | ..  | ..7 | 1   | 1    | 1   | 3   It's only seven pages. But we are left with 4 bits for the pagenummer.One bit too much? What happens with it?What happens if the adress looks like 11 11 00 00 00 11 (Pagenummer = 15)?
Translating virtual adress to physical adress
paging