> John was this a 717 type device as described in, "Granted, we had a > 3270ish > box > on the 3274's coax network that would allow a "regular" ASCII terminal to > be > used instead of, say, a 3277."? And can you point to an appropriate > location > to see what a 7171 type device would look like.
A 7171 (aka the Yale ASCII Controller) was a standard IBM half-height cabinet (same physical width and depth as other 370 processor and disk hardware, so it would line up nicely in rows, just half height,). It contained a 7RU chassis with a parallel channel interface card, the control unit processor cards (2), and up to 8 serial interface cards with 8 ports on each card, for a total of 64 connected ASCII devices per 7171 unit. AFAIK, they only came in Standard Ivory -- rumor had it you could get different color door panels, but the sides only came in Ivory. The color conversion kit contained two cans of spray enamel, some masking tape and a drop cloth...8-) AFAIK, it was the only terminal controller ever sold by IBM that supported more than 32 physical devices. It appeared to the host as two local non-SNA 3274s, each with 32 devices. If you *really* want obscure, find a 7170. Channel-attached UNIBUS cage, allowed use of the VAX Ethernet adapters for WISCnet and the very early VM TCP code. Weird, weird, *weird* device. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
