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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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 Posted: Tue Feb 17, 2009 1:26 am Post subject: Need ID on Mystery Card and several chips |
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Can anyone tell me what this card's function is? It has a 37 pin connector and some switches.
Also, what is the square S300 chip and the others below? I can't ID them anywhere!
Thanks!
Last edited by johnorun on Tue Feb 17, 2009 10:37 am; edited 1 time in total |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Tue Feb 17, 2009 2:19 am Post subject: |
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The Intel with the IBM on it is a MCS-51 microcontroller.
I'll take it if ya dont want it 
The MX chip may be from a Okidata printer (ML320 Turbo )
NEC D8253 is a interval timer
NEC D23C4000 is a mask ROM
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donutty
Joined: 16 Feb 2008
Posts: 1122
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| Posted: Tue Feb 17, 2009 1:40 pm Post subject: |
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| John - unless you didn't know, prefix the NEC 'D' prefix chips with 'UP' so they read 'UPDxxxx'. It catches a lot of people out. UPDxxxx is the actual part name but they only print the Dxxxx on the chips. |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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johnorun
Joined: 04 Apr 2008
Posts: 3364
Location: Chicago, IL- US
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| Posted: Tue Feb 17, 2009 5:26 pm Post subject: |
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Thanks for the info, guys.
>>> Anyone take a shot at the ID of the S300 chip?
* @John- I'll PM you about the Intel/IBM MCS-51 microcontroller. |
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