help2002

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help2002

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UWA week 40 (2nd semester, week 10) ↓

2nd project which page frames initially loaded in RAM? (all 7)

8:26pm Tue 1st Oct, Joshua N.

"Kristiaan Maree" <24*1*7*3@s*u*e*t*u*a*e*u*a*> wrote:

> Hi, > if we load the page frames in sorted by page num the memory looks like this: > > process 1: 0,1,2,3 > process 2: 4,5,6,7 > process 3: 99,99,99,99 > process 4: 99,99,99,99 > > > RAM: 0,1,2,3,4,5,6,7 > DISK: 99,99,99,99,99,99,99 > > but if we get the instruction '3' there is no process 3 in main memory to swap to, > > instead are we supposed to put in 2 each to avoid this? > > e.g. > process 1: 0,1,99,99 > process 2: 2,3,99,99 > process 3: 4,5,99,99 > process 4: 6,7,99,99 > > RAM: 0,1,2,3,4,5,6,7 > DISK: 99,99,99,99,99,99,99,99 > > so now instruction 3 changes it to > > RAM: 0,1,2,99,4,5,6,7 > DISK: 99,99,99,99,99,99,3,99 > > or is there a better way?

Are you asking if there are any pages in RAM when the simulation starts? The RAM is empty there are no pages in RAM.