IBM Logic IC equivalency information needed

Santo Nucifora santo.nucifora at
Thu Jun 17 15:55:56 CDT 2021

Al, I re-read your question and think you are referring to the manual I am
looking for.  I don't have the part number but I think it might be this:  What I had
was the " 5110 System Logic manual" that was a solid block.  Sadly, I threw
it away after I spent some time trying to unravel it and failed.

Hope this helps,

On Thu, Jun 17, 2021 at 4:17 PM Santo Nucifora <santo.nucifora at>

> The manual with the schematics was at the back part
> of SY31-0405-3_IBM_5100_Maintenance_Information_Manual_Oct1979.pdf.  PDF
> page 299 has the keyboard schematic/diagram.
> On Thu, Jun 17, 2021 at 4:15 PM Al Kossow via cctalk <
> cctalk at> wrote:
>> On 6/17/21 1:10 PM, Santo Nucifora via cctalk wrote:
>> > One of the 5110's I acquired
>> > had a full set of manuals but they were water damaged and the schematics
>> > manual was one solid block of paper with all pages stuck
>> > together
>> what was the part number of that manual?

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