Re: RJE

"Dave McGuire [email protected] [hercules-390]" <[email protected]> Wed, 10 Apr 2019 12:35:28 -0400

Newsgroups	gmane.comp.emulators.hercules390.general
Message-ID	<[email protected]>

On 4/10/19 6:38 AM, Ken Smyth [email protected] [hercules-390] wrote:
> That 3774 unit will have a synchronous RS232 type comm interface. It
> should be configurable for either SDLC or BSC, either way you will need
> a 37xx communications controller (aka FEP), ICA, or a 270x
> communications adapter on the mainframe side.

  We have two 3745s at the museum.  We have all of the documentation for
those, but none for the 3774.

> As far as Hercules, I seem
> to remember there is a 270x BSC emulation using sockets, so it would be
> possible to build a 'black box' to accept socket connections on one side
> and drive an RS232 sync interface on the other. Need to find a PCI or
> other synchronous RS232 card which probably are not that common anymore.

  Yeah, they've mostly disappeared, but I'm pretty good at ferreting out
old hardware.

           -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA