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okidoki73
Joined: 09 Feb 2004
Posts: 87
Location: norway
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 Posted: Sat Feb 28, 2004 2:50 pm Post subject: what cind of chip? |
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i have 5 ncr her all is gold\white 28-pin ceramic DIP and the print say:
6-7583 411093 36-76-h
6-7025 411854 44-76-h
6 7581 410952 7639
6 7598 411822 7641
6-7584 411528 46-76-h
so is it anybody who now what it is?
added a link to pic of them:
http://home.no/okidoki73/ncr%20white%20ceramid.jpg
and her are for som other white cermid who i want to now what is:
http://home.no/okidoki73/fujitsu%20white%20ceramid.jpg
maybe it helps whit pics?
Last edited by okidoki73 on Wed May 19, 2004 5:26 am; edited 1 time in total |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Sat Feb 28, 2004 3:33 pm Post subject: |
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I can't find anything on these chips  Markings on the chip look like custom numbers, so these could be mask programmed ROM chips.
Genna |
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okidoki73
Joined: 09 Feb 2004
Posts: 87
Location: norway
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| Posted: Wed May 19, 2004 5:28 am Post subject: |
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must add this so u se i have maked the links....UPDATED  |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Wed May 19, 2004 8:52 am Post subject: |
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most likely ROM chips...made by NCR (National Cash Register)
Most chips in 28 pin packages are ROMs and EPROMs.
the fujitsu chips are 2716 16k EPROMs
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okidoki73
Joined: 09 Feb 2004
Posts: 87
Location: norway
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Wed May 19, 2004 10:39 pm Post subject: |
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| okidoki73 wrote: | | what about some esd chips? |
Two top chips are from RT PC Advanced Processor Board:
http://ohlandl.kev009.com/6152/RT-PC_Adv_Processor_115.html
They are probably peripheral/support chips.
I couldn't find anything about bottom two chips.
Genna |
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Guest
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| Posted: Thu May 20, 2004 1:42 am Post subject: |
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| why is the esd`s made as they are,whit tincan and stuff and what spesial whit them,why was it they used them? |
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gshv
Joined: 01 Feb 2003
Posts: 7898
Location: Fairfax, VA USA
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| Posted: Thu May 20, 2004 9:10 am Post subject: |
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| Anonymous wrote: | | why is the esd`s made as they are,whit tincan and stuff and what spesial whit them,why was it they used them? |
They are IBM chips and have IBM house numbers, this is why so difficult to find any information on them. I don't see any copyrights on the chips, so they were probably designed by IBM. As for the tin cans I don't know why they are made this way.
Genna |
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okidoki73
Joined: 09 Feb 2004
Posts: 87
Location: norway
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| Posted: Thu May 20, 2004 12:59 pm Post subject: |
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they dont look cool even
but thanxs for all the info u "guys"(right?) provide me whit,must be some work to find out all of it.
but eeproms and roms isent even support chips that?anybody who collects chips like that?(yep,they will go for an offer,the whit ceramids i mean the esds go to anybody who wants them or in the garbage can) |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Thu May 20, 2004 1:15 pm Post subject: |
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no one collects ROMs (unless VERY early ones)
some people collect early EPROMs and the ones you have are a little different..so they may sell.
IBM also made some memory (on a 30 pin SIMM) in that package.
It probably was a cheaper package then ceramic.
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okidoki73
Joined: 09 Feb 2004
Posts: 87
Location: norway
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fRaSsL
Joined: 31 Mar 2003
Posts: 1570
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| Posted: Thu May 20, 2004 3:44 pm Post subject: |
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TMS320 is a simple TI DSP.
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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| Posted: Thu May 20, 2004 4:24 pm Post subject: |
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the Boca ant ATT/AT&T chips are modem ships
The fujitsu part is a Ethernet Data Link Controller
the tanberg parts I believe are tape controllers
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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Guest
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| Posted: Tue Oct 19, 2004 6:29 pm Post subject: |
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Those "cans" look alot like the devices used in the old IBM "Series" mainframes. I suspect the bottom has an early pin grid array for external contact. |
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