[HECnet] Next retro comms project?

[Sridhar Ayengar]

Fred wrote:
I thought SNA mostly ran on Token Ring or something?
I have an IBM PS/2 model (something) with both an MCA Token Ring card and and MCA Ethernet - and I even have a passive Token Ring Mau! (and a cable, somewhere ...)

There were also MCA cards for making a PS/2 emulate a SNA-connected terminal over coax.   And, BTW, all MAUs are passive.   The active device is called a CAU.   *shrug*

Now if I could just find that gateway software.   When I had access to a real mainframe, all of the PC's went through a handful of these PS/2's via Ethernet, and the PS/2's had token ring cards in them connected to a real FEP.

Cisco and Madge actually sold a significant number of devices for doing precisely this, back in the day.

Peace...   Sridhar