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wepwawet
Joined: 18 Mar 2004
Posts: 3019
Location: Seligenstadt - Germany
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 Posted: Mon Nov 15, 2004 9:34 am Post subject: 1818 and 1820 (hp) |
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Hi, I have a couple of chips marked only 1818-nnnn (where nnnn is any 4-digit-number), some 1818-nnnn-nnnn and two chips 1820-nnnn.
Most come from old HP Boards.
My only information is that 1818 was a marking for custom ROMs and 1820 for controllers.
Does anybody know more? |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Mon Nov 15, 2004 12:09 pm Post subject: Re: 1818 and 1820 (hp) |
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| wepwawet wrote: | | My only information is that 1818 was a marking for custom ROMs |
It could be.
| Quote: | | and 1820 for controllers. |
My impression was 1820-xxx was used for logic, peripheral chips, microcontrollers and microprocessors. At least I've got this impression when I looked for data for this page:
http://www.cpu-world.com/info/HP-parts.html
Finding any information on HP chips is next to impossible 
Genna |
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chip68
Joined: 19 Oct 2004
Posts: 1024
Location: Central Pennsylvania
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GRX-RAJU
Joined: 02 Apr 2012
Posts: 135
Location: Poland
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| Posted: Wed Nov 15, 2017 1:27 pm Post subject: |
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Could anyone tell me anythink about these chip??
Could it be CPU? |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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GRX-RAJU
Joined: 02 Apr 2012
Posts: 135
Location: Poland
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| Posted: Wed Nov 15, 2017 1:53 pm Post subject: |
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