Running OS on CPU Cache Possible?

[BristolBrick]

My new CPU has a cache of 9.25 MB. I know that is not enough to run something like windows, but suppose I put FreeDOS on? DOS could run on less than 1 MB of RAM, so could it in theory work?

[LAwLz]

In theory, yes, but in practice, no.

[TAHIRMIA]

No, cuz the cache is only for the cpu not for storage

[BristolBrick]

Hmm, does the BIOS not do stuff?

[Tosa]

Theoretically, you could overclock you RAM to match your CPU clock speed. You'll just need some damn efficient cooling for your RAM. Perhaps water cooling the RAM is sufficient?

[vorticalbox]

on a random computer no. The cpu scheduler run algorithms  to manage what is in cache. so say you run a program the cpu will call for memory block zero the  start of the program, of course this is not where the program is in memory (well very unlikely) so the memory management redirects to the correct start point in memory. 

 

you would need some very low level design to be able to do it but you could.