> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:[EMAIL PROTECTED] On Behalf Of Howard Brazee
> Sent: Friday, September 29, 2006 9:24 AM
> To: [email protected]
> Subject: Re: Integrated ASCII Console question.
> 
> 
> On 28 Sep 2006 21:44:38 -0700, [EMAIL PROTECTED] (Alan
> Altmark) wrote:
> 
> >And rightly so.  :-)  The I/O models for a character mode 
> VT220 and a 
> >block mode 3270 are just too far apart to allow meaningful 
> translation. 
> >It's been tried many times.  (The ASCII terminal functions 
> in the 3174 
> >don't count.)
> 
> At this date, a new model is warranted - one that is designed from the
> ground up to make it easy to integrate PCs and mainframe.
> 

I agree. I was trying to think of what kind of a channel connected box
would be required to be able to create a "KVM" (Keyboard Video Mouse)
type environment for z/Linux running under z/VM or in an LPAR. After
all, the zSeries hardware has PCI slots. Why not a PCI graphics card?
<grin>. Oh, and it needs to use the newest, undocumented "SIGA"
architecture and not the standard SSCH with CCWs. If "SIGA" is
documented somewhere, somebody please give me a pointer. Oh, other than
"use the source, Luke!" to see how it is used in the QETH driver on
Linux.

Actually, part of the problem in the original is very similar to one
that we experience here every day. The "old style" UNIX sysadmins don't
really want to bother learning how to do Linux system administration
without their usual toolset, which include "full screen" utilities such
as the vi editor. They cannot/refuse to work in a "dumb terminal"
environment. Imagine trying to do modern z/OS sysprogging (or anything
else) if all you had were 2471 line-mode terminals or an RJE card
reader/punch with a line printer. That's what is driving the "need" for
a "smart serial terminal" that can be used with the z/Linux system's IP
stack "dies" for some reason (like somebody messed up the routes or did
an "ifdown" by accident).

--
John McKown
Senior Systems Programmer
HealthMarkets
Keeping the Promise of Affordable Coverage
Administrative Services Group
Information Technology

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