512 meg-o-mem only shows as 256

Bitdog

Member
Dec 3, 2003
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I've got an Asus A7V266 mamma board, with an AMD Duron 1.6 applebred
and the 512 meg DDR PC2100 Infinion stick of memory only shows up as 256 meg.

Where-dit go ?
Is there a fix for the missing 256 megs or do I have a mismatch ?
The same stick worked on an ESC K7AMA with AMD 1.4 Tbird
I think it's 64x64 unbuffered non ECC but it's unmarked other than the chips say Infinon (mis spelt)
(I haven't take it out to get more info from it in a while.)

How do I find out what I have, (what do I look for on the chips/stick, for a web search string, for Google info ?)

The Asus board is plug & play but has manual jumpers for cpu & memory. (I've got it set on plug 'n play.)

Any info would be appreciated.

Bitdog
assembly programmer
 

Viper96720

Diamond Member
Jul 15, 2002
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He said the stick worked in another board so it can't be a 256MB stick that's mislabeled. Tried it in all the memory slots?
 

Bitdog

Member
Dec 3, 2003
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Nick> maybe you got screwed?
Thankx, I needed that. ;)
But, there's no maybe about it, it was a hundred bucks, & only half good.
(er half bad, depending on how you look at things.)
At least I know how to spell it now. "Infineon"


Thankx, Viper96720, it won't hurt to try all the slots, so I'm gonna do that.
I'm perdy sure I'v got it in slot 1 though.


Double sided DDR ram & only getting half read ?
Now that makes sence. Thankx motoamd, I'm going to have to do some web searches for the mamma boards spec's
& see if I got screwed on that deal too..............

Bit screwed Bitdog

 

Markfw

Moderator Emeritus, Elite Member
May 16, 2002
27,093
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Where does it show 256 meg ? Maybe the motherboard can't handle that high a density. Did you check the manual ?
 

Viper96720

Diamond Member
Jul 15, 2002
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Could be a bios setting try looking through the memory settings part of the bios. It supports up to 3GB or RAM so couldn't be a single side double sided issue with just a stick.
 

Viper96720

Diamond Member
Jul 15, 2002
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Could be a bios setting try looking through the memory settings part of the bios. It supports up to 3GB or RAM so couldn't be a single side double sided issue with just a stick.
Try changing the bank interleave settings.
 

JBT

Lifer
Nov 28, 2001
12,094
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I have had half a stick of a Crucial PC2100 256 die on me =( always showed up as 128 =( crucial of course RMAed no problem. You say you switched mother boards so I doubt the ram went bad.
 

InlineFive

Diamond Member
Sep 20, 2003
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Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.
 

dexvx

Diamond Member
Feb 2, 2000
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Originally posted by: nick1985
infineon isnt eactly a top brand, maybe you got screwed?

Infineon?

They're one of the top DRAM manufacturers right up there with Samsung, Hynix, and Micron.
 

Bitdog

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Dec 3, 2003
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It turns out I've got one stick of:
Infineon HYB25D256800 AT-7
with a 512 meg sticker. Although some web sites claim it's 512 meg, others claim it's 256 meg,
www.infineon.com doesn't know what it is.
I couldn't find it on their site, even in the discontinued area. (they've got the worlds worst search engine.)
www.google.com worked fine but no site listed had any valid info on the memory stick. So I'm stuck again.


Slogan, I seated it, reseated it, sat on it, shoved it in every slot I got & my 512 meg still has 256 meg showing.
I guess when they said (%50 off sale) they wern't talking about money.;)
So that's one less try I'll have to go through before I buy some new memory. Thankx for trying for me.

Markfw900, Maybe the motherboard can't handle that high a density. Did you check the manual ?
No manual so I down loaded a .PDF you know the kind that states: Your cmos options are AUTO, 2, 4
then you look at the screen and that's what it says, so they've told you nothing you don't already know
other than they don't have a clue either, their just doing their job.;)
CMOS reports 256 meg, non quick boot increments to 256 meg 4 times, DOS MEM command returns 256 meg XMS.

Quote: If Linux would run all of my stuff, I would never use Microsoft again
I hope you don't mind if I quote you now and then ?
When Win 3.0 came on my new 386, I swore I'ld never do that again.
My cure to the problem was: Never a buyer be!
I get my MS OS software from folks who buy new computers systems with OS, then I get their old OS fer a song.
Win98 was the best I've done so far. I was inches away from Win98 SE one day & that's the big one that got away.
The rest are mounted on my wall as trophys.;)

Oh yeah, I forgot to mention, when I got the Asus A7V266 board I tried everything I could think of
& it did find the 512 meg once, I haven't got a clue as to what I did, or how I got it to go back to all screwed up again.
But I was messing around with BIOS & CMOS setup at the time.

AND, I didn't mention that the reason I put the 512 memory in another momma board is that I burnt the old board up on
Redneck Rampage HickMart.map I was just about to let the Vixen have it when I smelt the smoke and within 2 CRT blinks,
all was quiet.:( I shouldn't have tried to save my game before I reached for the power switch, habit I guess.;)
So the memory has had a hard life and although it worked in the other board, there is some questions as to weather or not
it survived the break down intact. I tried it in my new board #2, an ESC K7S5A pro (cauff cauff) & it didn't work at all.
Can you melt the gold off of those things ? MEMORY FOR SALE, %50 OFF


Viper96720, the Asus MB is suspose to handle 3gb pc2100, & I tried different bank interleave settings, auto, 2, 4, none.
Hay, come to think of it, I didn't try "NONE" and I don't know what any of them mean ? I'm guessing that since the chip
is not double layered on either side (just a single row on each side) I have 2 banks? Then I tried different combo's
of interleave, SPD stuff, etc. It usually takes longer to try all the combinations than picking a $2 combination lock.
So I try a while & move on. I think Cmos, Bios Flash mem, then Corsair twin 512 pack for $152 is the cure.
I haven't looked into weather Infineon memory has any gaurentee, but I'm thinking that I'm stuck with it for now.
MEMORY FOR SALE, INFINEON 256 MB, must sell, mother lost job at cement factory & I must find a job or sell the memory.;)

JBT, my old mamma board burnt up and now it's a 256 meg instead of a 512 meg.
I think I'm in the same boat you were, it's a doomed stick.
The only thing is: I don't think I have a gaurentee of any kind.:(

No PorBleemo, I'll pay attention to Nick, it ain't slander if it's true, freedom of speach and all.
Plus he's got more posts than I do. (12)
I didn't know there was a web site like this one available when I bought the hardware junk I've got.
I read through a few posts here the other day and got some what enlightened in a crash course.
I'll have to play catch up for a while, then I'll lay in wait for unSaint Nick.;)
As for the memory, I don't know what to do? Keep trying instead of buying?
Buy another fire extinguisher & get by with it as long as I can?
OR break down and buy, it is Xmas season and all. So this year it might as well be memory under the tree for me.
But memory makes such a small insignificant looking package, the dog could swallow it and I'ld be back here posting,
512 MEG DDR MEMORY REMOVAL TIPS WANTED, xray shows stuck sideways, which end do I start looking for it at?
I don't want to get bit. If I get some doggie downers from the vet, should I take some myself? ;)
DOG FOR SALE $600 (I'm only asking what I've got into him so far, I'm not making anything on the deal.)

Dexvx, I got the memory as no name, but found out like you said, it's a reasonably good brand name.
But now I'm thinking that bad memory with a life time gaurentee might be better than good memory with a 3 month policy.
I'm going to have to read some more posts around here & git edcumacated.;)

Thankx all

I suspose I could call the XMS driver in a little.com and get a mem available return?
Code:
	MOV	AH,8		; Function, Get the XMS memory available stats
	CALL FAR [CS:XMSadr]	; Dword adr, returns AX & DX
	MOV WORD [CS:XMSmax],AX	; AX = largest K_block available
	MOV WORD [CS:XMSsiz],DX ; DX = total K_bytes available
Bitdog
 

mbackof

Senior member
Sep 10, 2003
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I ran into something similar with some Crucial PC133 RAM showing up as half its value and causing Windows errors. I RMAed the RAM with Crucial and the replacement did the same thing. It works fine and reads the proper value in another mainboard. My guess is that it is incompatible with your board and you should return it and get something else if you can. My situation was frustrating because all of the specs matched the Crucial RAM already in the system. The model number was off by 2 digits. This stick had the same number of chips and the only physical difference was that it was shorter by about 1/8 inch.
 

Viper96720

Diamond Member
Jul 15, 2002
4,390
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I think I know why you may not be seeing all of it. Does your motherboard support registered memory? It's 512MB of PC2100 registered memory.

edit:link not working
 

Bitdog

Member
Dec 3, 2003
143
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mbackof. I'm haveing a hard time getting valid info on the 512 meg Infineon HYB25D256800 AT-7
So I don't know if it's a match for the Asus A7V266 mamma board ?
I'm still searching the web for info.

Viper96720, I think the mamma board takes registered mem, so today I'm searching for Infineon info
to see if it's a match or not.


Thankx guys, I think match info is the right direction for a cure.
Bitdog
 

nick1985

Lifer
Dec 29, 2002
27,153
6
81
Originally posted by: dexvx
Originally posted by: nick1985
infineon isnt eactly a top brand, maybe you got screwed?

Infineon?

They're one of the top DRAM manufacturers right up there with Samsung, Hynix, and Micron.

their quality is nothing compared to these other brands IMO
 

nick1985

Lifer
Dec 29, 2002
27,153
6
81
Originally posted by: PorBleemo
Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.

so you think infineon are high quality modules? gimme a break....
 

MDE

Lifer
Jul 17, 2003
13,199
1
81
Originally posted by: nick1985
Originally posted by: PorBleemo
Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.

so you think infineon are high quality modules? gimme a break....

Just because Infineon equipped 9800nps don't overclock like the ones with Samsung chips doesn't make the Infineon crap.
 

nick1985

Lifer
Dec 29, 2002
27,153
6
81
Originally posted by: MonkeyDriveExpress
Originally posted by: nick1985
Originally posted by: PorBleemo
Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.

so you think infineon are high quality modules? gimme a break....

Just because Infineon equipped 9800nps don't overclock like the ones with Samsung chips doesn't make the Infineon crap.

i never said it was "crap", i said it wasnt high quality. dont put words into my mouth.
 

MDE

Lifer
Jul 17, 2003
13,199
1
81
Originally posted by: nick1985
Originally posted by: MonkeyDriveExpress
Originally posted by: nick1985
Originally posted by: PorBleemo
Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.

so you think infineon are high quality modules? gimme a break....

Just because Infineon equipped 9800nps don't overclock like the ones with Samsung chips doesn't make the Infineon crap.

i never said it was "crap", i said it wasnt high quality. dont put words into my mouth.
Not high quality meaning inferior, meaning crap. Stop taking back what you're saying.
 

nick1985

Lifer
Dec 29, 2002
27,153
6
81
Originally posted by: MonkeyDriveExpress
Originally posted by: nick1985
Originally posted by: MonkeyDriveExpress
Originally posted by: nick1985
Originally posted by: PorBleemo
Dont' pay attention to Nick, he always flames stuff he doesn't like.

And as for your problem I would say it sounds like a compatiblity issue between the motherboard and memory.

so you think infineon are high quality modules? gimme a break....

Just because Infineon equipped 9800nps don't overclock like the ones with Samsung chips doesn't make the Infineon crap.

i never said it was "crap", i said it wasnt high quality. dont put words into my mouth.
Not high quality meaning inferior, meaning crap. Stop taking back what you're saying.


no. not high quality doesnt mean crap. it means just that, not high quality. if i thought it was pure SH!T i would have said that. thank you.
 

MDE

Lifer
Jul 17, 2003
13,199
1
81
Originally posted by: nick1985
no. not high quality doesnt mean crap. it means just that, not high quality. if i thought it was pure SH!T i would have said that. thank you.

Let's stop crapping on this thread and mine.