[vcf-midatlantic] IBM 3174 (older version)

Jonathan Gevaryahu jgevaryahu at gmail.com
Mon Aug 15 12:10:38 EDT 2016

On 8/15/2016 10:51 AM, Matt Patoray via vcf-midatlantic wrote:
> On Mon, Aug 15, 2016 at 10:41 AM, william degnan via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
>> For $88, it's prob close to a handful of people here who could pick up,
>> someone I am sure could make use of this for their IBM 80's 90's mainframe
>> stuff...I know Dave McGuire has an IBM S/370 system that use two of these
>> as part of it at the museum in Pittsb.  The're used to connect printers and
>> terminals.
>> http://www.ebay.com/itm/IBM-3174-11R-CONTROLLER-DATA-
>> PROCESSOR-/142073134011?hash=item211437fbbb:g:XiYAAOSwUuFWv0sw
>> --
>> Bill Degnan
> It looks like this terminal controller uses SNA not Bus and Tag(Parallel
> channel IO) through Bus and Tag could be added through another I/O card,
> this is also the single floppy drive model so that limits its functionality
> a bit over the 2 floppy model. They are not that bad to move, just really
> an awkward size, shape (I have managed to take one and stack it on top of a
> DEC short rack without too much trouble).
For reasons involving imaging various floppy disks, I've got two of the 
funky 2.4MB 5.25" floppy drives the 3174 used here(one from each of the 
two(?) manufacturers IBM used), as well as one of the 3174 firmware/boot 
disks (3174 CONTROL // MACHINE 3174 P/N 74F3319 E/C C40960 ML93155 
MICROCODE LVL C3.0). I forget whether the floppies/drives are 192TPI or 
if they're 96TPI with ultra-high density (ED).

If someone needs to borrow one I could lend it out, but I do need it back.

Jonathan Gevaryahu
jgevaryahu at gmail.com
jgevaryahu at hotmail.com

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