I do not think they called them HMCs back during the ES/9000 era (at
least for the little ones), just "Processor Console".

--
Will

On Mon, Dec 18, 2017 at 2:20 PM, Carmen Vitullo <cvitu...@hughes.net> wrote:
> HMC ?
> if you are talking master console, or system consoles, I believe it was a 
> token ring network
>
>
> http://www-01.ibm.com/support/docview.wss?uid=isg2ba4122bfe6d689198525666e005d3c9f&aid=1
>
>
> this may help
>
>
>
> Carmen Vitullo
>
> ----- Original Message -----
>
> From: "William Donzelli" <wdonze...@gmail.com>
> To: IBM-MAIN@LISTSERV.UA.EDU
> Sent: Monday, December 18, 2017 1:04:24 PM
> Subject: ES/9000 Console Cable
>
> Quick question:
>
> On the small ES/9000s (9221-150), how exactly does the console cable
> connect to the processor? Parallel port from the PC (apparently S/390
> and 9370 are like this)?
>
> --
> Will
>
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