As far as I know, the SIS 496 does not support EDO RAM. How many SIMM slots does your board have? Maybe I still have FPM modules stored somewhere...

I thought the 496 was one of the few chipsets that did support EDO...? Or maybe it's dependent on the BIOS of the particular board.

Just to make sure... have you tried parity memory in it?

I think that I've tried EDO in my 496/497 mobo and it didn't work. But it has been a few years so I could be wrong.

The SIS 496 may be able to support EDO RAM in the specification (I don't know about that), but I've yet to see a board that works with it.

See also this thread.

BTW, has anybody managed to run more than 256KB L2 cache on a SIS 496/497-based mainboard?

5u3 wrote:

As far as I know, the SIS 496 does not support EDO RAM. How many SIMM slots does your board have? Maybe I still have FPM modules stored somewhere...

I flashed the bios with the latest realease i was able to find.

But the memory refuses to work (i mean edo memory)

The only thing that changed was the CPU Microcode so the 133MHZ ADZ and ADW processors succesfully worked after the flash.

My board has 4 simm slots and it's like this one

http://stason.org/TULARC/pc/motherboards/m486_3.html

Old Thrashbarg wrote:

I thought the 496 was one of the few chipsets that did support EDO...? Or maybe it's dependent on the BIOS of the particular board.

Just to make sure... have you tried parity memory in it?

NO i do not have Parity Simms. So i didn't give it a try.

5u3 wrote:

The SIS 496 may be able to support EDO RAM in the specification (I don't know about that), but I've yet to see a board that works with it.

See also this thread.

BTW, has anybody managed to run more than 256KB L2 cache on a SIS 496/497-based mainboard?

Mine had installed 4 chips for a total of 256k cache. I installed another 4 chips and i also changed the tag ram so now shows and has 512 total cache.

Seaside wrote:

Mine had installed 4 chips for a total of 256k cache. I installed another 4 chips and i also changed the tag ram so now shows and has 512 total cache.

Ah, you used 64K x 8 chips, nice! 😉
I tried 128K x 8, but they didn't work, and unfortunately my board does not have the sockets for eight 64K x 8 chips.

I rummaged in my RAM pile, but the turnout was not very impressive: I only have some 4 MB FPM modules left (with these, you could upgrade your board to 16 MB RAM). If you're interested to get these for the price of shipping, drop me a PM.

5u3 wrote:

Ah, you used 64K x 8 chips, nice! :wink: I tried 128K x 8, but they didn't work, and unfortunately my board does not have the so […]
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Seaside wrote:

Mine had installed 4 chips for a total of 256k cache. I installed another 4 chips and i also changed the tag ram so now shows and has 512 total cache.

Ah, you used 64K x 8 chips, nice! 😉
I tried 128K x 8, but they didn't work, and unfortunately my board does not have the sockets for eight 64K x 8 chips.

I rummaged in my RAM pile, but the turnout was not very impressive: I only have some 4 MB FPM modules left (with these, you could upgrade your board to 16 MB RAM). If you're interested to get these for the price of shipping, drop me a PM.

Thank you very much. This is a very kind gesture.

I will let you know.