3 ms·
That's not cache, friend - that's main system memory =) (and 640KB by the time of the 486) (though, speaking of cache, the 486 was the first chip in the famil
by mtrower 8y ago
That's not cache, friend - that's main system memory =)
(and 640KB by the time of the 486)
(though, speaking of cache, the 486 was the first chip in the family to have L1 cache - a whole 8KB of it!)
- 0xcde4c3db 8y agoParent specified a board with SIMM sockets, which would contain main memory. The 486 family supported external L2 cache, for which 64KB would be a plausible size.
- mtrower 8y agoDid SIMM RAM straight up replace the DIP chips when it was introduced? For some reason I thought they were used in parallel, with conventional RAM physically separate from the rest. I guess there's no reason that should have to be, though, as the 640K barrier was a real mode limitation, and nothing more. What they say about assumptions applies. I guess I kind of missed out on the fun here, going straight from an XT to a Pentium...
- 0xcde4c3db 8y ago> For some reason I thought they were used in parallel, with conventional RAM physically separate from the rest. I don't specifically know of any boards like that, but Pre-Pentium boards were kind of a free-for-all, so I wouldn't be a bit surprised if they exist.