Can only use 0.5x multipliers

[Oreo]

I've got a little weird problem. I unlocked my XP but I can only choose multipliers that are a 0.5x for example 10.5 or 11.5 if I try 10 it doesn't even boot. Anyone know what could be wrong? It's on a A7V133.

 

[johncar]

Oreo,
Need more info...post speed grade of chip 1600+, 1700+ etc...and also list what Multiplier values you're trying to set and what you actually get...do as many as possible.
John C.

 

[Oreo]

It's a 1600+ (which shouldn't really matter) and a A7V133 as I said. I always get the correct multiplier but I can only choose full numbers if I try a x.5 number I can't boot.

Edit: I got the answer now. I haven't fully closed all the bridges. Have to try, again.

 

[johncar]

Originally posted by: Oreo
It's a 1600+ (which shouldn't really matter) and a A7V133 as I said. I always get the correct multiplier but I can only choose full numbers if I try a x.5 number I can't boot.

Edit: I got the answer now. I haven't fully closed all the bridges. Have to try, again.

But the default setting does matter because it defines which of the 5 Bit Values, .5X, 1X, 2X, 4X, 8X, are Enabled/set HI and which are Disabled/set LO...then one can begin to diagnose/isolate which "particular" bridge/s might have had a faulty mod. For example 1600+ 10.5X default has the .5X, 1X, 2X, 4X Bit Values set HI, 8X set LO. 11X has all of them set LO, and 11.5X has only the .5X Bit Value set HI. Each L1 bridge connects to a single Bit Value signal to the Multiplier, so a "set/get" diagnosis can usually pinpoint the faulty mod. For example, if your 1600+ system couldn't turn off/reset LO the default HI .5X Bit Value, then an open L1 bridge is the most likely fault since closed L1 bridges are the interface between the mobo/bios and the Multiplier module on the cpu.

The L1 bridges L to R interface to the .5X thru 8X Bit Values.

http://www.beachlink.com/candjac/index.htm link to Final decode Palomino article for details/understanding to facilitate diagnosis.

However, first post says 10.5X/default and 11.5X = OK and 10X = NG. Then latest post says full numbers = OK and .5X numbers = NG...which is it???
John C.

 

[osage]

johncar, I have been reading the Linked pages from your post...I must say my head is spinning. I'm unclear on where I have errored.

I have a 1600XP, I connected the L1 bridges but I don't have the full range of multipliers,

8x-8.5x-11x and 11.5x -12x work fine

7.5x-9x-9.5x-10x-10.5x do not work, the board will not post with these Xs. I'm using an Abit KR7A that should have all X avalible..

Is my unlock job not correct, or do I need to change some other bridge connections ?

any help would be great, thanks. osage

 

[johncar]

I have a 1600XP, I connected the L1 bridges but I don't have the full range of multipliers,

8x-8.5x-11x and 11.5x -12x work fine

7.5x-9x-9.5x-10x-10.5x do not work, the board will not post with these Xs. I'm using an Abit KR7A that should have all X avalible.. osage

Logic = Start with the default setting for 1600+ = 10.5X = 7.5X set HI by AMD = .5X + 1X + 2X + 4X Bit Values set HI and the 8X Bit Value set LO...and we ignore the 8X for now as it only comes into play for 13X and higher...so "all other Multiplier resettings" simply involve resetting various combinations of .5X, 1X, 2X, or 4X LO.

Next "detail" the Multipliers that "don't post"...

7.5X = 4.5X HI = .5X + 4X HI, 1X and 2X reset LO.
9X = 6X HI = 2X +4X HI, .5X and 1X reset LO.
9.5X = 6.5X HI = .5X + 2X + 4X HI, 1X reset LO.
10X = 7X HI = 1X + 2X + 4X HI, .5X reset LO.
10.5X = 7.5XHI = .5X + 1X + 2X = 4X HI, none reset LO.

Then "detail" the Multipliers that work OK...

8X = 5X HI = 1X + 4X HI, .5X and 2X reset LO.
8.5X = 5.5X HI = .5X + 1X + 4X HI, 2X reset LO.
11X = 0X HI = None HI ,5X, 1X, 2X , 4X reset LO.
11.5X = .5X HI = only .5X HI, 1X, 2X , 4X reset LO.
12X = 1X HI = only 1X HI, .5X, 2X , 4X reset LO.

In the NG group all settings with the exception of 7.5X required that the 2X Bit Value "remain" HI...note that default 10.5X has it set HI and even the default did not post.

On the other hand, all OK Multipliers required that 2X be reset LO, right?? So there's our clue...something to do with the mod involving the 2X Bit Value...and that something is either that the 2X L1 bridge is either still open...or it might be grounded, reset LO, in which case a "hard ground" directly to ground without a pulldown resistor "cannot" ever be reset HI by the mobo/bios. And that's what fits your data, with the exception of the 7.5X.

Whenever a resetting requires 2X HI NG, 7.5X excepted. Whenever a restting requires 2X LO OK.

Suggest you check the 2X L1 bridge, the middle one, to see if it's connected to ground...believe all the copper labeling and icons are connected to ground plane...also the site has diagrams that show which 1K resistors are connected to LO/ground...their bottom ends.
Then clean it up and be sure there is no remaining connection to ground in the cavity before reclosing that 2X bridge.

Finally, we are surprised that the system would not post when 2X HI was required...would have just expected a resetting 2X lower than called for...example, would have expected 10.5X to generate 8.5X instead. But perha[ps your mobo/bios is sensitive to grounded L1 bridges.

Anyway, that's what the data suggests. Hope our site will be clearer now for future diagnostics by you. As you see, it's not rocket science...just 5 bit binary logic.
John C.

 

[Oreo]

Ok, now I've got a new dilemma for ya I reconnected the bridges and everything was fine but after I tried to change the L10 bridge (so it would default to a 13X instead of a 5X multiplier) something got fuxored. First of all my L10 mod didn't work, I still can't boot at a 13x multiplier, but that might be the chip just can't handle it. But the other thing is that now I can't choose a 12.5 multiplier. I can choose all the other multipliers (I think) but uf I choose a 12.5X it just uses a 12X instead. And the last thing is that now my motherboard recognizes my CPU as a 1900+ instead of a 1600+ and it always says "1900+" at the boot no matter what speed the CPU is. What is going on?

 

[osage]

John, thank you..I will re do the 2x L1.

If I set the multi in bios to 10.5 it will not post, when I restart it will default to a 8.5 multi.

I post after I redo the L1.

 

[johncar]

Originally posted by: osage
John, thank you..I will re do the 2x L1.
If I set the multi in bios to 10.5 it will not post, when I restart it will default to a 8.5 multi.
I post after I redo the L1.

osage,
Wow...that set 10.5X/get 8.5X really points to the default HI 2X Bit Value being grounded/reset LO permanently by its L1 closing mod. And glad to see it agrees with how we suspected the failure should behave, even if it took a restart to get there...the original no post must be some bios or Northbridge issue that doesn't like grounded L1. Looking forward to your post.

Are you comfortable now with the diagnostic logic...using the Multiplier Algorithms and Bit Values to decode the probable fault?? That's why we wrote up the article/s.
John C.

 

[johncar]

Originally posted by: Oreo
Ok, now I've got a new dilemma for ya I reconnected the bridges and everything was fine but after I tried to change the L10 bridge (so it would default to a 13X instead of a 5X multiplier) something got fuxored. First of all my L10 mod didn't work, I still can't boot at a 13x multiplier, but that might be the chip just can't handle it. But the other thing is that now I can't choose a 12.5 multiplier. I can choose all the other multipliers (I think) but uf I choose a 12.5X it just uses a 12X instead. And the last thing is that now my motherboard recognizes my CPU as a 1900+ instead of a 1600+ and it always says "1900+" at the boot no matter what speed the CPU is. What is going on?

We're not sure whether you changed any other L3/L4/L10 Multiplier bridges except the L10 (from LO to HI) cause default 1600+ = 10.5X Multiplier with SUM HI = 7.5X = .5X, 1X, 2X, 4X Bit Values all set HI from the factory. And 5X comes from only 2X HI, while 13X comes from 10X = 2X +8X/L10s reversed...both HI. So we're not sure exactly what you've done re "hard mods" to the various bridges.

Frankly we're confused cause we don't have "complete set/get info" like osage posted, but we'd "guess" this...you set 12.5X in the bios (which calls for just .5X and 1X Bit Values HI), but you get 12X cause the .5X Bit Value is LO for some reason. Then you also get the 1900+ msge cause 12X is the default Multiplier for 1900+ and the bios cpu ID function probably doesn't care "how" the 12X got set/reset. As to why it always says 1900+ no matter the speed....has the cpu been hard modded to 12X..or 12.5X???

As to why .5X might be LO when resetting to 12.5X = .5X +1X HI...
could be the leftmost .5X L1 bridge got permanently grounded during the L1s' closing mod...(which sounds like your original .5X problem). That's all we can guess at unless we know exactly what mods you did/tried to all L1 and L3/L4/L10 bridges and more "set/get" data...even if some are below default 10.5X.
John C.

 

[osage]

John, I very carefully closed all the L1s again, I used red nail polish this time so I could be sure to see it. I'm pretty sure I have the trenches properly insulated on my 1600XP. I'm using an Abit KR7A mobo.

Now I can only use even X ,8 thru 12, when I select a .5X such as 8.5 the speed is reported as 1066 the same as 8X. This is the case for all .5 X, it will fall back to the next lower even X setting.

7x133 = 933

7.5x133 =933 should be 997

8x133 = 1066

8.5x133 = 1066 should be 1130

9x133 = 1200

9.5x133 = 1200 should be 1263

10x133 = 1333

10.5x133 = 1333 should be 1397

11x133 = 1463

11.5x133 = 1463 should be 1530 etc: etc:

Where to from here ? ? If I connect all the L3 L4 and L10 bridges will I have control via the mobo, or will I fry my cpu ?

thanks osage

 

[johncar]

Osage,
The 1600+ has a default Multiplier = 10.5X which has the .5X, 1X, 2X and 4X Bit Values Set HI by the L3/L4 bridges and the 8X Bit Value is set LO by the L10 bridges. So if the .5X L1 bridge was "open" you'd get all the n.5X Multipliers cause the .5X Bit Value is set HI by default, but mobo/bios would be unable to reset that .5X Bit Value LO thru an open L1 bridge to get the n.0X Multipliers.

But that's not what you get, you get the n.0X multipliers, but not the n.5X Multipliers, which means that the .5X Bit Value has been reset LO with a "hard/direct ground" which cannot be reset HI by the mobo/bios. You have apparently cleared the grounded 2X Bit Value, but now have a similar problem with the leftmost .5X one.

The ground does not have to be just in the leftmost .5X BV L1 bridge cavity. It can be grounded on the surface as well, since the triangle icon to the left of that bridge and all the labels on the surface are reported to be at electrical ground voltage level. Also the 2 leftmost L3 bridges connect to the .5X BV signal bus. So we'd inspect the surface first to see if some of the bridge closing material applied to the L1 and the leftmost 2 L3 bridges has spilled over and is contacting any of the surface "ccopper" grounds mentioned above. If not then might be the .5X BV L1 bridge cavity this time, assuming that it was the cavity in the 2X BV problem which seems to have been fixed.
John C.
Edit:- do not mess with the L3/L4/L10 unless you've read the Palomino bridges Decoding article and understand it thoroughly. For example to change a particular Bit Value you reverse the open/closed status of that particular "bridge pair"...and there are 5 bridge pairs in the 10 L3/L4/L10 bridges. Further, suppose you did not like the new setting, or it didn't post...then you'd have to redo the mod over again...and for some setting changes 2 or 3 bridge pairs might be necessary.

 

[johncar]

Osage,
The 1600+ has a default Multiplier = 10.5X which has the .5X, 1X, 2X and 4X Bit Values Set HI by the L3/L4 bridges and the 8X Bit Value is set LO by the L10 bridges. So if the .5X L1 bridge was "open" you'd get all the n.5X Multipliers cause the .5X Bit Value is set HI by default, but mobo/bios would be unable to reset that .5X Bit Value LO thru an open L1 bridge to get the n.0X Multipliers.

But that's not what you get, you get the n.0X multipliers, but not the n.5X Multipliers, which means that the .5X Bit Value has been reset LO with a "hard/direct ground" which cannot be reset HI by the mobo/bios. You have apparently cleared the grounded 2X Bit Value, but now have a similar problem with the leftmost .5X one.

The ground does not have to be just in the leftmost .5X BV L1 bridge cavity. It can be grounded on the surface as well, since the triangle icon to the left of that bridge and all the labels on the surface are reported to be at electrical ground voltage level. Also the 2 leftmost L3 bridges connect to the .5X BV signal bus. So we'd inspect the surface first to see if some of the bridge closing material applied to the L1 and the leftmost 2 L3 bridges has spilled over and is contacting any of the surface "ccopper" grounds mentioned above. If not then might be the .5X BV L1 bridge cavity this time, assuming that it was the cavity in the 2X BV problem which seems to have been fixed.
John C.

 

[osage]

OK John, I'll pull the cpu and give it a good look over, I'll undo the lock job if nessasary.

thanks