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Slava
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 Posted: Sun Jul 24, 2005 2:23 am Post subject: Cx487S40QP |
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Hi All
Do you know what is a Cyrix Cx487S40QP ?
I took it from a i386DX motherboard.
Tried google, found zero matches for this chip :) A piece of info would be appreciated.
Regards, Slava, Ukraine |
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vinicio
Joined: 15 Feb 2003
Posts: 435
Location: Italy - Tuscany
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| Posted: Sun Jul 24, 2005 2:35 am Post subject: Re: Cx487S40QP |
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| Slava wrote: |
Do you know what is a Cyrix Cx487S40QP ?
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Fpu for 486 Cyrix FasCache.
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(Dante Alighieri, Inferno, Canto XXVI, 119 - 120) |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 3:28 am Post subject: |
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You mean that it was in a 386 mobo just for fun? 
P.S. I've registered in the forum 
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Collecting soviet and western CPUs once again -- highfive to old-timers o/ |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Sun Jul 24, 2005 5:44 am Post subject: |
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This couldn't be on 386 mainboard because Cyrix 487 -40QP have 168 pins (386 cpu have 132 pins).
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 6:08 am Post subject: |
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| Marcin Majewski wrote: | | This couldn't be on 386 mainboard because Cyrix 487 -40QP have 168 pins (386 cpu have 132 pins). |
This chip is not a cpu, it's an fpu. It has 68 pins. It looks almost exactly like this:
.jpg)
But is named Cx487S40QP.
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Jul 24, 2005 6:15 am Post subject: |
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| I see Cx87DLC-40GP printed on chip. |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 6:18 am Post subject: |
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| Elar wrote: | | I see Cx87DLC-40GP printed on chip. |
Man, I've no place to upload my photos, and my own website is not ready. I just showed a sample photo. It looks ALMOST like this except the cpu model name.
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Jul 24, 2005 11:52 am Post subject: |
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| slava wrote: | | Elar wrote: | | I see Cx87DLC-40GP printed on chip. |
Man, I've no place to upload my photos, and my own website is not ready. I just showed a sample photo. It looks ALMOST like this except the cpu model name. |
Sorry, missed that somehow. |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Sun Jul 24, 2005 1:44 pm Post subject: |
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| slava wrote: | | Man, I've no place to upload my photos, and my own website is not ready. I just showed a sample photo. |
I'll see if I can add image upload feature to the forum.
Gennadiy |
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chipcollector
Joined: 28 Sep 2004
Posts: 1681
Location: New England
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| Posted: Sun Jul 24, 2005 1:59 pm Post subject: |
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| slava wrote: | You mean that it was in a 386 mobo just for fun?
P.S. I've registered in the forum |
Welcome to the forums!
The 487 is a 486 coprocessor, right? |
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Marcin
Joined: 02 Jan 2005
Posts: 8519
Location: Poland
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| Posted: Sun Jul 24, 2005 2:37 pm Post subject: |
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| slava wrote: | | Marcin Majewski wrote: | | This couldn't be on 386 mainboard because Cyrix 487 -40QP have 168 pins (386 cpu have 132 pins). |
This chip is not a cpu, it's an fpu. It has 68 pins. It looks almost exactly like this:
But is named Cx487S40QP. |
I know that is not CPU - in the fact FPU Yap I didn't see photo of your 487 so I admited your looks like :
That is real FPU for Cyrix Fascache I had one 486 class mainboard with external place for 387 FPU.
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vinicio
Joined: 15 Feb 2003
Posts: 435
Location: Italy - Tuscany
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| Posted: Sun Jul 24, 2005 4:49 pm Post subject: |
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| slava wrote: | You mean that it was in a 386 mobo just for fun?
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I have answered only to your question.
Why it's found on a mainboard 386 it's another question. 
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Fatti non foste a viver come bruti, ma per seguir virtute e canoscenza.
(Dante Alighieri, Inferno, Canto XXVI, 119 - 120) |
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slava
Joined: 24 Jul 2005
Posts: 379
Location: Dnipro, Ukraine
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| Posted: Sun Jul 24, 2005 5:30 pm Post subject: |
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| Marcin Majewski wrote: |
That is real FPU for Cyrix Fascache I had one 486 class mainboard with external place for 387 FPU. |
Mine looks same as the one you pictured, except it doesn't have that socket around it.
Thanks for your help guys.
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