AMD XP FPU Bug?

[swNYC]

Yesterday I was doing some P&L spreadsheets for work on excel, and discovered that my computer cant add properly. I thought it was some randon problem w/ Excel.

Today I was doinf some deal engineering, using Windows Calculator, I put in this simple subtraction:

299.99 - 25.00

repeatedly it gives me the answer of 7499.99 😕

Can someone verify this?

I have an Retail XP 1800+ CPU and a ASUS A7V-266E Motherboard. CPU L1 bridges are all unlocked, but currently I'm currently running on default frequency/multiplier though.

 

[vss1980]

Hmmmm, seems a bit odd. Which windows are you running? And are you overdriving any other component like memory latency, etc?

 

[Jeniva]

hmmm..sounds like its just you....I get the correct answer of 274.99....I run Win XP Pro, AMD 1700+@1650(11*150)

 

[BrainStorm24]

I get the good answer on my side too 274,99?!? It is probably a setting somewhere in your OS or something...

Athlon XP 1600+

 

[MadRat]

Go look up the bugs in MS Excel. It has a problem with adding certain decimals.

 

[Swanny]

I'd say it's just your problem. I get 274.99 on my XP 1900+@ 140FBS on an Asus A7V-266E.

 

[Wind]

No probs here as well.

 

[Carrot44]

I also get 274.99 on a XP1800 with Win XP

 

[jbond04]

Wouldn't this be an ALU problem, since it is only subtraction (negative addition) and not multiplication? Correct me if I'm wrong (which is a very likely possibility), but isn't like this: FPU does multiplication and ALU does add/subtract?

 

[ssanches]

No problem for me as well.

Jbond04, I'm under the impression that both the integer and the FPU could do all 4 operations (+ - * / ). I'm not sure what the Windows calculator uses, but I feel it's the FPU

 

[RadioactiveMagpies]

150 mhz fsb, alot of heat, but no problems here.
check to see if there are any dust in the socket-a on the motherboard or on the pins of the cpu.

 

[Jeomite]

maybe you hit the wrong key?
299.99 - 25.00 = 249.99

BUT perhaps what you did was multiplication?...
299.99 * 25.00 = 7499.75

 

[CTho9305]

<< maybe you hit the wrong key?
299.99 - 25.00 = 249.99

BUT perhaps what you did was multiplication?...
299.99 * 25.00 = 7499.75 >>



no.... 299.99 - 25.00 = 274.99 😉
(which I get on my athlon classic....)

 

[ssanches]

Probably it's a Windoze thingy 😕 ?

Edit: is your keyboard layout setting correct? For example English US, UK etc??