.legaCy wrote:I thought that only K6-2+ or K6-3+ were able to change L2 cache on the fly, but for caches(because they have l2 cache built in) […]
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mothergoose729 wrote:.legaCy wrote:well i currently have my time machine(to play 386,486 and pentium) era games, everything working flawlessly, when both caches are disabled wing commander 1 run perfectly fine, do you guys think that 386 speed sensitive games would run too fast with a 200 MMX, cause i was thinking of also getting a voodoo 2.
And in that case which games you guys recommend that would benefit for the 200 MMX ?
The pentium MMX can be configured with SETMUL and caches disabled to run at about a 386DX25 speeds, but no slower than that without tools like mo'slow. It has probably the most speed gradients of any DOS era CPU because of the options to set bus speed, caches, and to disable instructions (including MMX). It should be able to get slow enough to run wing commander, and fast enough to run high resolution DOS games at 640x480 at decent speeds.
https://www.youtube.com/watch?v=xcBmEjXg2ME&t=123s
I thought that only K6-2+ or K6-3+ were able to change L2 cache on the fly, but for caches(because they have l2 cache built in) but i really don't see the point of using setmul on cpus that don't allow l2 and multiplier changes on the go, i always set the cache to make the appropriate speed for the game that i want to play before booting.
I could just try it, but my board require voltage,bus frequency(in this case the bus frequency wont need to be changed) and multiplier to be set by jumpers so its quite annoying to set jumpers specially with the board inside the case, hence why i'm asking here before.
Maybe tomorrow i'll give it a try.
You still have to disable L2 cache in the bios for K6+ processor as well in order to get down to 386 speeds. At 133mhz with caches on you can hit just a touch above 486 66, a few steps between 486 33 and 486 66 and of course pentium pro 133. Witch caches disabled, you can get down to right on a 386 33 with some intermittent steps between a fast 386 and slow 486. You then have the option to go down to 120 mhz for a slower 386, or up to 233mhz for more performance.
You can also leave it at 233mhz and caches on, and then configure instructions to get down to 486 speeds and pentium 133mhz speeds, and then only change the multiplier when you need to play older games at 386 speeds. It just gives you the most options.