overclock

[kruiser]

266 went without a hitch (that's what it says on boot). if you do the math the bus is at 76Mhz (266/3.5).

it seems i had 83 (290) except for the floppy drive wouldn't read - any suggestions?

[Daniel Middlema]

How did you have JP5-D set on it? If you did'nt have it set to pins one and two , then you should change that. I'm thinking you must have though, because you did have it running at 75 megahertz. I don't think I've tried running my FSB at 83.3 yet. You may not be able to get it up to that speed. It was suggested to me by one of the guys here on the forum to set the bus at 83.3 and then set the multiplier at a lower setting to see if it would run at that. I would try 83.3 with a 3.0x multiplier and see if that works. That will tell you if the system will be stable at 83.3. Which would be around 250 megahertz. What voltage does that chip run at? You may need more juice to get it to run right. Which may or may not require a mod to the board.

[kruiser]

JP5-D is set to pins one and two.

i suspect the processor is multiplier locked at 3.5, however your suggestion does have merit and perhaps i should try.

but what i really think is happening is that since the processor, hard drive and cdrom seem to be fine and detect at 83 MHz, the floppy might be the only problem at that speed. hence my post.

[jim chase]

I suppose it is possible that either the floppy controller or the drive dosen't like the 83mhz fsb, it has happenned with many other peripherals. Try another drive, also try the manual recommended 2-3 on JP5-D.

If the floppy controller runs at ISA speed (not sure) then the above shouldn't matter. :rolleyes: Oh well.

Sometimes strange things happen when you overclock.

Jim

[timmy]

kruiser:

I don't think that your problem is motherboard related, assuming all of your setup is correct, which is probably is. I would venture to guess the problem is your Intel 233 MMX cpu. I think that as a Socket 7 processor, these chips were only made to run at a front side bus speed of 66 MHz. The fact that you've gotten it to run at 75 MHz speaks well of it, but I suspect that 83.3 is just too fast for it.

We know that the board will usually support an 83.3 front side bus (in the version 7, anyway) and if you were to try a cpu that will run a 100 MHz bus, I think that might do the trick for you.

That's just my guess.

[kruiser]

so even though it posts at 290 and the other drives detect fine you don't feel the floppy drive would hold me back? so should i up the voltage then?

surely if it's posting at 290 the slightest tweak would put it over the top. (provided the floppy is fine).

[timmy]

Well, I can 't say really what is wrong -- I'm just guessing. If you have moved JP5 D as Jim has suggested and it doesn't do any good, my suspicions would be that there is something about the cpu running on that very fast front side bus that is making your floppy controller very unhappy. If you backed off the multiplier and tried, say, 2X 83.3, then you'd also know for sure that it wasn't an issue with the processor's internal speed rating.

Overvolting is something that might help or might give you a piece of toasted silicon -- if you've exhausted every other avenue and you are committed to getting the system to run at this speed, no matter what the risk, it could be something to consider.

I'd tend to think, however, that it was time to put the 233 to bed and move up to a faster chip.