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Strange IBM board...

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kosmokrator



Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
PostPosted: Mon Jul 16, 2012 2:45 pm    Post subject: Strange IBM board... Reply with quote
I recieve today within some other old boards and this beauty......
Anyone can id what is the function of this board?
i make a litle search and find the intel PI P A IS 8051 MCU ... WHAT ABOUT PI P P and others???

the board willBe Available for sale (if any interested) in a few days
thnx








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Elar



Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
PostPosted: Mon Jul 16, 2012 3:03 pm    Post subject: Reply with quote
The 4178615 is 8085 CPU and 4178628 is a 8255A-5 parallel port.
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UMMR



Joined: 23 Aug 2007
Posts: 381
Location: Udine, ITALY
PostPosted: Mon Jul 16, 2012 3:26 pm    Post subject: Reply with quote
Hi,
IBM DisplayWriter CPU card.
Paolo
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kosmokrator



Joined: 03 Jul 2008
Posts: 4085
Location: Athens-GR
PostPosted: Mon Jul 16, 2012 3:34 pm    Post subject: Reply with quote
Smile Many thnx for your Quick and helpfull Reply's
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Tegranphos



Joined: 04 Oct 2009
Posts: 806
Location: Navarra - Spain
PostPosted: Mon Jul 16, 2012 3:39 pm    Post subject: Reply with quote
beautyful board....
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My small x86 collection: http://tegranphos.x86-guide.com/en/collection.html
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nigwil



Joined: 15 Nov 2010
Posts: 5
Location: Tasmania, Australia
PostPosted: Fri Jan 18, 2013 5:46 pm    Post subject: Help with main IBM DisplayWriter 6380 CPU board? Reply with quote
Can someone who can decode Intel / IBM part numbers take a look at the main IBM 6380 DisplayWriter CPU board and identify the main chips please:

http://bitsavers.trailing-edge.com/pdf/ibm/6380_Displaywriter/photos/Displaywriter_CPU.jpg

In particular from that photo:

Intel 8493077 8119 - 40 pin DIP INTEL '78 '79
Intel 4178619 8112 - 28 pin DIP INTEL '77
Intel 4178617 8120 - 40 pin DIP INTEL '76
Intel 5178625 8132 - 24 pin DIP INTEL '76
Intel 4178623 8117 - 28 pin DIP INTEL '76
Intel 4178628 8118 - 40 pin DIP INTEL '77
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Elar



Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
PostPosted: Sat Jan 19, 2013 3:01 am    Post subject: Reply with quote
8493077 - 8086
4178619 - 8251A
4178617 - 8257-5
4178623 - 8259A
4178628 - 8255A-5
4178625 - 8253-5
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nigwil



Joined: 15 Nov 2010
Posts: 5
Location: Tasmania, Australia
PostPosted: Sat Jan 19, 2013 3:58 am    Post subject: Reply with quote
Thanks Elar, much obliged.
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mavroxur



Joined: 06 Jul 2005
Posts: 1192
Location: Wichita Falls, TX
PostPosted: Sat Jan 19, 2013 1:08 pm    Post subject: Reply with quote
Usually the SIP components are resistor or capacitor networks.
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nigwil



Joined: 15 Nov 2010
Posts: 5
Location: Tasmania, Australia
PostPosted: Sun Feb 24, 2013 12:21 am    Post subject: Reply with quote
Hi Elar,

I have one more for you please, this is found on the floppy disk controller that is mounted inside the external 8-inch floppy drive cabinet, IBM labels this external cabinet as the 6360

http://i.imgur.com/VtMxSqj.jpg

The unknown 40-pin plastic DIP has the number:

Intel 4430030 8139

I assume the last 4 digits (8139) are the date code? year 1981 week 39?

On this board there is also an Intel 4178628 that you have identified previously as the 8255A-5 and a NEC D765D floppy disk controller.
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Elar



Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
PostPosted: Sun Feb 24, 2013 3:32 am    Post subject: Reply with quote
Sorry, no clue about the 4430030.
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nigwil



Joined: 15 Nov 2010
Posts: 5
Location: Tasmania, Australia
PostPosted: Sun Feb 24, 2013 3:36 am    Post subject: Reply with quote
Elar wrote:
Sorry, no clue about the 4430030.

thanks for looking.

Is the date-code interpretation correct though?
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Elar



Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
PostPosted: Sun Feb 24, 2013 3:38 am    Post subject: Reply with quote
nigwil wrote:
Elar wrote:
Sorry, no clue about the 4430030.

thanks for looking.

Is the date-code interpretation correct though?


You are right about the date code.
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Elar



Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
PostPosted: Wed Dec 27, 2023 7:52 am    Post subject: Reply with quote
Elar wrote:
Sorry, no clue about the 4430030.


Better late than never Smile
The 4430030 is Intel 8041 slave microcontroller. Bitsavers even has firmware dump from it.
http://www.bitsavers.org/pdf/ibm/6580_Displaywriter/firmware/
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