IBM 5140 - schematics?

Paul Berger phb.hfx at
Sat Apr 28 15:13:35 CDT 2018

On 2018-04-28 5:00 PM, Bill Degnan via cctalk wrote:
>> 6280655_PC_Convertable_Technical_Reference_Volume_1_Feb86.pdf
>> which I think I got from Bitsavers. Page 46 and following of that .pdf
>> (page 2-37 and following of the original manual) give the pinout and
>> signals on the 'I/O Channel connector' which I think is the one you
>> are asking about. Looks to be pretty much the 8 bit ISA bus
>> signals.
>> It's a 72 pin connector, good luck in finding something to fit it!
>> -tony
> Surprised there is no regular rs232 port
There is an add on serial/parallel port that has a standard RS-232 port, 
they are pretty common.


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