IBM Logic IC equivalency information needed

Santo Nucifora santo.nucifora at
Thu Jun 17 15:17:21 CDT 2021

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>

> 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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