RagingSquirrel wrote on 2024-02-17, 19:47:

https://i.postimg.cc/N0pPXY0K/423455111-1103039234380934-3130460869817721441-n.jpg […]
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Here is the picture from my motherboard

EDIT: The guy whoom i am buying the cache cips from said, that if i dont have jumpers, it means that it might only support 256 k and eighter doenst gonna work with 512k or only 256k gonna be recognised.. Could it be that instead of jumpers it has to be setted in bios?
Eighter way .. i think buying the 512 k would be the best choice .. because price vise its the same...

There are enough jumpers 😀
I believe this is the right description for the board:
https://theretroweb.com/motherboard/manual/tm … 9e623797712.pdf
So it's JP9 and JP10, both are now on 2-3, so set to 256kB.

On the faster set, there is a 16kx8 Tag RAM with 12ns (The chip with the number 129) That is sufficient for 256kiloByte, too.

ohh yes i see them now.. but according to that manual it supposed to be on the other side of the sis chip. but yes i can see them now. Thats a relief.. Anyway , one of my friend told me he have 15ns 512 k cache cips Heres a photo of it.. Do you think this should work with my board? Also which one would be better ?

This one or the one with the 12ns tag chip? Is there a huge difference? Because this one i can get waty cheaper..

RagingSquirrel wrote on 2024-02-17, 22:39:

ohh yes i see them now.. but according to that manual it supposed to be on the other side of the sis chip. but yes i can see the […]
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ohh yes i see them now.. but according to that manual it supposed to be on the other side of the sis chip. but yes i can see them now. Thats a relief.. Anyway , one of my friend told me he have 15ns 512 k cache cips Heres a photo of it.. Do you think this should work with my board? Also which one would be better ?

This one or the one with the 12ns tag chip? Is there a huge difference? Because this one i can get waty cheaper..

15 nanoseconds is fast enough.

Ok thank you for your help.. i cant wait to get my hands on those ramms and test if its working properly.. I will let you know about the resault..

Thank You for Your help.. The ramms arrived and they working like a charm.. Tomorrow morrning i am going to collect the cache chips.. Hopfully it will work in my mobo, and i did not killed the cache slots xD

Well.. Unfortunately the cache chips doesn't seems to work. The guy whom i buyed from claims that these are 512k caches with the right tag ram. He said he tested it. When i put it in my motherboard it recognize as 128k

I tried to set the jumper settings to 512 and to 128, but none of them make the board boot properly.. It only boots when i disable extended cache in bios.

Could someone please verify that these are the right 512k cache chips with the right tag chip... unfortunately i don't really know what those numbers mean on the chips.. so its hard for me to identify if these are what they supposed to be

Well most likely i fried the tag ram socket as well or something got broke on the board, but just in case maybe i got the wrong cache chips... I really don't want to spend more money on this rig, but in worst case i have to buy an other mobo which was the most expensive part of my 486 rig..

Also i am wondering what are the chances that only the chip socket got bunt.. is there a chance to fix it if i replace the 28 pin tag chip socket on the board?

RagingSquirrel wrote on 2024-02-21, 10:12:

Well.. Unfortunately the cache chips doesn't seems to work. The guy whom i buyed from claims that these are 512k caches with the […]
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Well.. Unfortunately the cache chips doesn't seems to work. The guy whom i buyed from claims that these are 512k caches with the right tag ram. He said he tested it. When i put it in my motherboard it recognize as 128k

I tried to set the jumper settings to 512 and to 128, but none of them make the board boot properly.. It only boots when i disable extended cache in bios.

Could someone please verify that these are the right 512k cache chips with the right tag chip... unfortunately i don't really know what those numbers mean on the chips.. so its hard for me to identify if these are what they supposed to be

Well most likely i fried the tag ram socket as well or something got broke on the board, but just in case maybe i got the wrong cache chips... I really don't want to spend more money on this rig, but in worst case i have to buy an other mobo which was the most expensive part of my 486 rig..

Also i am wondering what are the chances that only the chip socket got bunt.. is there a chance to fix it if i replace the 28 pin tag chip socket on the board?

Unfortunately you did not understand what I wrote. I hope you know the difference between bits and bytes. If not: Short explanation: 1 byte = 8bit. 😁.
Re: While initializing device VXDLDR Windows protection error. You need to restart your computer

You bought a set of 256kiloByte of cache. The same what you had before.
The chips with 500 in the number are 64kx8. The x8 means 8 bits are processed in parallel. So the capacity of one of those chips is 64 kiloByte.
BUT: The capacity of RAM chips is mostly specified in bits (or kilobit or Megabit). Therefore the 500 in the number. One chip has 512 kilobit which equals to 64 kiloByte.

4 chips with 64kiloByte gives you 256kiloByte. As already mentioned, that is the same you had before.
So set the jumpers back to 256kiloByte.
"I tried to set the jumper settings to 512 and to 128" => Nooooooo.

I also wrote, for 512kiloByte of cache you need 4 pieces of ISSI IS61C1024 chips.
EDIT: I wrote:
"
There are complete sets of 256kB cache, so very similar to your existing set. The chips with 512 are 64kx8, the chip with the 256 in the number is the 32kx8 tag ram.
The tag ram is faster in both sets, yes. The second set has only 20ns data srams, so that would be slower than would you have now.
Yes, you can upgrade to 512kB Cache, then you need a tag ram 32kx8 (the one with 256 usually in the number) and 4 times 128kx8, for example ISSI IS61C1024-15 .
"
==>>
They are organized as 128kx8. That means one chip has 128kiloByte. Again the 1000 in the number here indicates 1024 kilobit.
So 4 pieces of those would give you 512kiloByte.

Do you understand it now?

So still we don't know if you fried something on the board or not.

I tink i start to understand.. But than according what you said this set is also only 256k isnt it?

It is advertised as 512k

The part i did not understand it how the tag chip works i mean wich tag chip compatible with wich cache cips? How does that work?
Aniway i set the jumpers to 256k and it works like a charm.. I am soo stupid xD.. That i did not tried it before hand .. I almost brought an other motherboard , because i thaught its faulty.. now i just have to upgrade to 512k .. or is that even necesarry ? I heard that with 16 mb ram it really doesnt make any difference ,, is that true?

RagingSquirrel wrote on 2024-02-21, 19:43:

I tink i start to understand.. But than according what you said this set is also only 256k isnt it? […]
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I tink i start to understand.. But than according what you said this set is also only 256k isnt it?

It is advertised as 512k

The part i did not understand it how the tag chip works i mean wich tag chip compatible with wich cache cips? How does that work?
Aniway i set the jumpers to 256k and it works like a charm.. I am soo stupid xD.. That i did not tried it before hand .. I almost brought an other motherboard , because i thaught its faulty.. now i just have to upgrade to 512k .. or is that even necesarry ? I heard that with 16 mb ram it really doesnt make any difference ,, is that true?

Yes, it is also a set of 256kByte.

For 256kByte of Cache you need either a 32kx8 tag chip (something with 256 or 257 in the number) or a 16kx8 tag chip (something with 128 or 129 in the number).

BUT for 512kByte you need a 32kx8 tag chip, 16kx8 won't work.
So to upgrade to 512kByte now, you just need the 4 chips with the 1024 in the number 😀

It is true, the more RAM you have, the more important a bigger L2 cache gets. And yes, 16MB is not very much, so the gain with 512kByte is not very big. I would say maybe 2% more performance (?)
On the other hand, maxing out things is fun and it is not completely useless, it is a small gain.
The real problem is, that you have to get those IS61C1024 chips from China. It is a gamble, sometimes those chips simply do not work.

CoffeeOne wrote on 2024-02-21, 19:56:

Yes, it is also a set of 256kByte. […]
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RagingSquirrel wrote on 2024-02-21, 19:43:

I tink i start to understand.. But than according what you said this set is also only 256k isnt it? […]
Show full quote

I tink i start to understand.. But than according what you said this set is also only 256k isnt it?

It is advertised as 512k

The part i did not understand it how the tag chip works i mean wich tag chip compatible with wich cache cips? How does that work?
Aniway i set the jumpers to 256k and it works like a charm.. I am soo stupid xD.. That i did not tried it before hand .. I almost brought an other motherboard , because i thaught its faulty.. now i just have to upgrade to 512k .. or is that even necesarry ? I heard that with 16 mb ram it really doesnt make any difference ,, is that true?

Yes, it is also a set of 256kByte.

For 256kByte of Cache you need either a 32kx8 tag chip (something with 256 or 257 in the number) or a 16kx8 tag chip (something with 128 or 129 in the number).

BUT for 512kByte you need a 32kx8 tag chip, 16kx8 won't work.
So to upgrade to 512kByte now, you just need the 4 chips with the 1024 in the number 😀

It is true, the more RAM you have, the more important a bigger L2 cache gets. And yes, 16MB is not very much, so the gain with 512kByte is not very big. I would say maybe 2% more performance (?)
On the other hand, maxing out things is fun and it is not completely useless, it is a small gain.
The real problem is, that you have to get those IS61C1024 chips from China. It is a gamble, sometimes those chips simply do not work.

Thank You for your help .. i think for now 256k will do .. it was enough stress for me in the past week to build it as it is.. I am only thinking to extend te ram on my S3 Virge card from 2-4MB since i found the exact same chips wich i have integrated on the card...

RagingSquirrel wrote on 2024-02-21, 22:02:

CoffeeOne wrote on 2024-02-21, 19:56:

Yes, it is also a set of 256kByte. […]
Show full quote

RagingSquirrel wrote on 2024-02-21, 19:43:

I tink i start to understand.. But than according what you said this set is also only 256k isnt it? […]
Show full quote

I tink i start to understand.. But than according what you said this set is also only 256k isnt it?

It is advertised as 512k

The part i did not understand it how the tag chip works i mean wich tag chip compatible with wich cache cips? How does that work?
Aniway i set the jumpers to 256k and it works like a charm.. I am soo stupid xD.. That i did not tried it before hand .. I almost brought an other motherboard , because i thaught its faulty.. now i just have to upgrade to 512k .. or is that even necesarry ? I heard that with 16 mb ram it really doesnt make any difference ,, is that true?

Yes, it is also a set of 256kByte.

For 256kByte of Cache you need either a 32kx8 tag chip (something with 256 or 257 in the number) or a 16kx8 tag chip (something with 128 or 129 in the number).

BUT for 512kByte you need a 32kx8 tag chip, 16kx8 won't work.
So to upgrade to 512kByte now, you just need the 4 chips with the 1024 in the number 😀

It is true, the more RAM you have, the more important a bigger L2 cache gets. And yes, 16MB is not very much, so the gain with 512kByte is not very big. I would say maybe 2% more performance (?)
On the other hand, maxing out things is fun and it is not completely useless, it is a small gain.
The real problem is, that you have to get those IS61C1024 chips from China. It is a gamble, sometimes those chips simply do not work.

Thank You for your help .. i think for now 256k will do .. it was enough stress for me in the past week to build it as it is.. I am only thinking to extend te ram on my S3 Virge card from 2-4MB since i found the exact same chips wich i have integrated on the card...

Upgrading the S3 Virge to 4MB brings you exactly 0% more performance, I already answered in your other thread and it was confirmed by others.
But go ahead, the empty sockets just do not look nice.

CoffeeOne wrote on 2024-02-21, 22:05:

RagingSquirrel wrote on 2024-02-21, 22:02:

CoffeeOne wrote on 2024-02-21, 19:56:

Yes, it is also a set of 256kByte. […]
Show full quote

Yes, it is also a set of 256kByte.

For 256kByte of Cache you need either a 32kx8 tag chip (something with 256 or 257 in the number) or a 16kx8 tag chip (something with 128 or 129 in the number).

BUT for 512kByte you need a 32kx8 tag chip, 16kx8 won't work.
So to upgrade to 512kByte now, you just need the 4 chips with the 1024 in the number 😀

It is true, the more RAM you have, the more important a bigger L2 cache gets. And yes, 16MB is not very much, so the gain with 512kByte is not very big. I would say maybe 2% more performance (?)
On the other hand, maxing out things is fun and it is not completely useless, it is a small gain.
The real problem is, that you have to get those IS61C1024 chips from China. It is a gamble, sometimes those chips simply do not work.

Thank You for your help .. i think for now 256k will do .. it was enough stress for me in the past week to build it as it is.. I am only thinking to extend te ram on my S3 Virge card from 2-4MB since i found the exact same chips wich i have integrated on the card...

Upgrading the S3 Virge to 4MB brings you exactly 0% more performance, I already answered in your other thread and it was confirmed by others.
But go ahead, the empty sockets just do not look nice.

I know.. but yes i want to fill all the empty sockets xD

Well a little update.. Unfortunately it turned out that the com ports on the board doesnt seems to work anymore.. I found that out in the hard way..First i taught that the mouse got broken, than i brought an other mouse which is still not working.. so i assume it must have been the board.. Anyway i think i have to buy a new board. I am considering this board..

[url=https://postimages.org/]

My question is that as i can see it has a sis 85C496 chipset with "OR" revision.. my question is is that revision support edo ram ? Or only FPM?