vintage IBM board?

[Bob Bradlee]

On Mon, 28 Jul 2008 13:46:07 -0400, William Donzelli wrote:

>>   I just spotted this on eBay.  Isn't this a very early (pre-S/360) IBM
>> board?
>>
>>   eBay item #230231322529

>While it is weird to have SLT on an SMS board, it is well within
>reason. SMS (the form factor for the board at auction) was used for 25
>some years.

>The part number (397563) puts in pretty much in the S/360 era.

>--
>Will

A lot of 360 I/O lived on in the 370 family.
The 370/135 had an Intergreate Printer Adapter (IPA) feature that would drive a 1403N1
and an (ICA) Intergrated Communications Adaptor, 

It looks like a line driver for/from some kind of I/O to me.

Bob