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VSA100 RAMcontroller-how it works? 64M/chip for V5 (Read 1747 times)
Komponent
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #15 - 13.02.07 at 06:46:43
 
Quote:
Uhm, page 41 section 3.4.3 Frame Buffer Pins;
MCLKA and MCLKB
Can I start smiling yet or am I misunderstanding what these two do?

No, no; the thing that you noticed is only a special thing about how the memory controller on the VSA100 works. In simple words, it does a 128bit acces to the RAM, but divided in half; first 64bits (half of the total amount of chips) are assigned to the "A" port and the last 64bits are assigned to the "B" port. Do not be confused though, there are not 2 independent memory controllers, but 2 units for multiplexed datas (data input and output to and from the video RAM).

Quote:
Nice Work Komponent !
It's nice to see that people like you ( and you're unfortunately the only one i know ) are still tryng to do the memory modding on the VSA chip.
Therefore, my V5 5500 is on the way to you. At the end of the Week, you will have the needed "ingredients" to start the project.
May the voodoo spirit be with you !
Br.
Radu.

Thanks Radu for your kind words, allthough there was not anything special there; Hank Semenek had published the points for A11 adresses on a Voodoo5 5500 AGP a long time ago; unfortunately he had not marked the chip-select pins too; I saw no research done for the Voodoo4 PCI PCB, so I shared my results; it could be of some help.
I guess it would not be wrong to let the other members here know that we (me and Radu) talk for some time now about teaming up to do future 3DFX modding. Radu offered to sacrifice his only Voodoo5 5500 AGP as a test platform for my work. I want to thank him here! As we talked in private, I will be happy to accept for him to send me the V5 as soon as we find the new RAM chips; no point to send it to me sooner, because allthough we both searched in our homme-towns, we have not found 2xGeForce2 cards with 64Mb SDRAM, 128bits, 8 chips for each one. If we proceed to do the mod, we will share the results on this forum.
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ultima
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #16 - 09.05.07 at 14:36:27
 
hi there,

is there anything known about what brand geforcecards use the desired ram chips??

If I know which ones that would be.......then I could have a look and see if I can find any for you guys. Smiley

or just the ram chips markings, from which brands, that would help a lot as well.

Does micron have usable chips?? or hynix?? name some and I'll see if I can find them.

And what about the chips on the Hercules Kyro 2 cards?? they run 175Mhz and are sdram, maybe they are compatible?? if I remember correctly, the kyro 2 also has 128bit.

I also read in the Napalm document that it supports 66Mhz pci, does that mean that if you put a 5500 pci in a 66Mhz pci-x slot, it'll actually run 66Mhz and still in spec?? thus removing the pci bus as limiting factor??
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« Last Edit: 09.05.07 at 16:26:45 by ultima »  

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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #17 - 09.05.07 at 19:53:53
 
Now... I am not sure what are you asking... If you talk about the compatible memory chips, but with double the density, there are no confirmed donor video cards models; at least none that I know about. There is a router and also a HDD that are known to use 16Mb RAM TSOP2-86 modules onto theyr PCBs, and we have M14Radu to thank for the infos; and there is a real chance that a no-name low-profile PCI Quadro card might also use the desired memory chips, but so far all this path looks like a dead-end.
If you want an example of a brand/model of compatible 16Mb TSOP2-86 SDRAM modules, there are manufacturers that advertised the production of such items, like the K4S283232E-T from Samsung. Good luck if you think that you could be able to buy a dozen or two of them.
In an effort to bypass the limitation of geting this kind of rare RAM chips, M14Radu and myself have started a project to try to use non-compatible memory modules for the "transplant". All the technical details are above on the topic. We allready have all the RAM chips that we need for the modding of a single prototype Voodoo5 5500, but the thing that we do not have is alot of time to work on it...
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #18 - 09.05.07 at 22:51:57
 
ohh, cause I was looking around, and found these:

HYNIX 210A HY57V281620HCT - 6 KOREA

2 cards, 64MB per card, divided over 4 chips per card.

that's 16MB per chip, but probably not compatible, is it??

or this ram:

V-Data
60150
VDS6616A4A-6

both are 166Mhz chips and 16MB per chip, so that's ok, but is it compatible??
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« Last Edit: 09.05.07 at 22:54:51 by ultima »  

3DFX Playrig:

Aerocool Strike-X Air
SuperMicro H8DAE
Dual Opteron 280 @ 2.4Ghz (4 cores)
4 x 1GB PC3200
3DFX Voodoo5 5500MAC PCI
WD 160GB ATA100/133
Diamond MonsterSound MX300
Windows2000 SP4
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #19 - 10.05.07 at 04:49:24
 
The RAM chips on Voodoo4/5 SDRAM cards are of TSOP2-86 standard, that is each memory module has 86 pins.
VDS6616A4A and HY57V281620HCT chips are of TSOP2-54 standard, that is each memory module has 54 pins.
So, no, they are not compatible, unfortunately; it would be like a try to plug an Intel LGA775 CPU onto a AMD 939 socket, he-he...
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #20 - 10.05.07 at 08:01:35
 
ok.

I'll still keep my eyes open and see if I can track some ram. Smiley

when I googled the ram you mentioned, the 1st page was one you probably already saw, so....I made a request anyway, but doubt they'll respond.
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3DFX Playrig:

Aerocool Strike-X Air
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4 x 1GB PC3200
3DFX Voodoo5 5500MAC PCI
WD 160GB ATA100/133
Diamond MonsterSound MX300
Windows2000 SP4
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #21 - 16.05.07 at 08:07:54
 
Well,

I did some more searching, and found another site. I actually got a message from them, stating that one of their suppliers would contact me, which I ofcourse haven't had yet. Sad

I requested info about the ram you mentioned, the K4S283232E-T

let's hope they do contact me. Smiley
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3DFX Playrig:

Aerocool Strike-X Air
SuperMicro H8DAE
Dual Opteron 280 @ 2.4Ghz (4 cores)
4 x 1GB PC3200
3DFX Voodoo5 5500MAC PCI
WD 160GB ATA100/133
Diamond MonsterSound MX300
Windows2000 SP4
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #22 - 06.06.07 at 17:15:00
 
Hey guys. Finally had some time to look over the VSA100 data book and I do have a couple of questions. Being that I'm not electrical genious by any means (putting the cord into the wall and watching my tv turn on is about my extent of knowledge  Tongue), I'm wondering why exactly the V4's work in AGP 4x mode with 1.5 volts where as the V5's can't and is there a way to make it work? I'm just wondering because getting that to work somehow would open up alot more doors for compatiability especially since the mother board market for the AGP 3.3 volt is steadily shrinking.
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #23 - 06.06.07 at 22:57:14
 
@ Jandarsun8

There was something like this thread posted @ http://www.3dfxzone.it/enboard/default.asp
and the result was a real no go, even that a Voodoo 5 5000 AGP x4 as 5500 AGP AGP x4 as 5500 AGP x4 for Macintosh have the AGP x4 connector, they will only opperate in AGP x2 / 3.3volt modes itīs because of the 3dfrx SLI interfering with the AGP x4 signals as that safety thing.
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« Last Edit: 06.06.07 at 23:04:38 by N/A »  
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #24 - 07.06.07 at 00:28:20
 
I think it's due to the SLI being based on PCI bus. Therefore the 'bridge chip' limits the SLI cards like the V5500 anc V6000 to PCI speeds effectively... Roll Eyes

(my memory isn't what it used to be though!) Tongue

LOL! Grin
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #25 - 07.06.07 at 22:23:17
 
uhm the 5000 as 5500 donīt have bridge chips only 6000īs have them:
http://www.3dfx.ch/gallery/v/3dfx_collectors/collectors_obiwankenobi/album85/3df...

stupid spannish Win98SE rigs here are so ghey Roll Eyes they donīt even let you post normal pics as so unstable grrrr, when they lockup you money counter keeps on going lol payīn for the d*mn crashes Roll Eyes
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« Last Edit: 07.06.07 at 22:25:40 by N/A »  
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #26 - 12.09.07 at 15:34:04
 
hah ,

juhu Grin

I think I found the right memory

its the ML12L128324A-6T(G)

http://www.esmt.com.tw/DB/manager/upload/M12L128324A.pdf
(see top of page9  and page45)

I could get max. 32 of the RAM modules in Germany


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« Last Edit: 12.09.07 at 15:35:07 by Pastor »  
 
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #27 - 12.09.07 at 19:04:04
 
Nice news Pastor,
It seems to be the right memory  Grin


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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #28 - 13.09.07 at 14:40:36
 
Shocked  yeah....

I would like minimum 8 better 16 of them!
quanta costa?
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Re: VSA100 RAMcontroller-how it works? 64M/chip fo
Reply #29 - 13.09.07 at 16:22:38
 
everyone who is interested please contact me per PN:

I have to know how many chips you want and how you want to pay and where to ship and and and...  Grin

but it needs some time to look at all the inquiries ...
and I am a human, too, so I need (at least a bit) time Roll Eyes

@gtxe : one chip costs 3,8€

procedure: i order ... i get the chips ... you send me the money ... than i will send the chips to you ...
or you pay for the number of chips you want and than when i get them i will send them to you ...

i know its difficult but its my money too



Pastor
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« Last Edit: 13.09.07 at 16:33:29 by Pastor »  
 
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