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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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 Posted: Wed Feb 22, 2012 12:17 pm Post subject: IBM 386DX, 51F1783 |
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IBM 51F1783 metal can. Clearly a 386DX but what speed?
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Wed Feb 22, 2012 1:03 pm Post subject: |
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oops I was looking at the wrong chip
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Tegranphos
Joined: 04 Oct 2009
Posts: 806
Location: Navarra - Spain
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| Posted: Sat Feb 25, 2012 8:34 pm Post subject: |
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| hi, i think that is a 16 MHz version |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Sun Feb 26, 2012 3:03 am Post subject: |
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| That's my guess also as 51F1784 is 20 MHz part. |
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alvaro84
Joined: 17 Apr 2015
Posts: 80
Location: Fehérvárcsurgó, Hungary
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| Posted: Mon Oct 10, 2016 11:50 am Post subject: Re: IBM 386DX, 51F1783 |
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| Elar wrote: | IBM 51F1783 metal can. Clearly a 386DX but what speed?
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I have an even better question.
What's its correct alignment in a socket?
I have one too and I had another one earlier that I couldn't bring it to life in the 386DX board I have that time. It got lukewarm but did nothing, no matter how I aligned it.
Now I don't dare try the same with the new one, I'm afraid I'd kill it - or the board. |
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debs3759
Joined: 18 Jan 2006
Posts: 9477
Location: Northampton, Divided Kingdom
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| Posted: Mon Oct 10, 2016 12:56 pm Post subject: Re: IBM 386DX, 51F1783 |
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| alvaro84 wrote: | | Elar wrote: | IBM 51F1783 metal can. Clearly a 386DX but what speed?
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I have an even better question.
What's its correct alignment in a socket?
I have one too and I had another one earlier that I couldn't bring it to life in the 386DX board I have that time. It got lukewarm but did nothing, no matter how I aligned it.
Now I don't dare try the same with the new one, I'm afraid I'd kill it - or the board. |
I'm not sure (my IBM metal can 386 are all at AVICC), but pretty sure if you look at the chip with the text right way up, pin A1 will be bottom left. I will be testing that when I get them forwarded.
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alvaro84
Joined: 17 Apr 2015
Posts: 80
Location: Fehérvárcsurgó, Hungary
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| Posted: Tue Oct 11, 2016 12:09 pm Post subject: |
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| Thanks in advance! Mine is S1F1784 anyway. And it was so 386 shaped I grabbed it and looked for it for a while - but my knowledge is still deficient... |
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aberco
Joined: 05 Sep 2013
Posts: 2655
Location: Paris France
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| Posted: Tue Oct 11, 2016 12:43 pm Post subject: |
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| If you tried different orientations you may have fried it... |
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alvaro84
Joined: 17 Apr 2015
Posts: 80
Location: Fehérvárcsurgó, Hungary
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| Posted: Tue Oct 11, 2016 11:40 pm Post subject: |
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| aberco wrote: | | If you tried different orientations you may have fried it... |
That's possible so I'd rather not experiment with this second one. |
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