On Friday, 11/09/2018 at 03:49 GMT, [email protected] wrote:
> Are there other solutions? Is it possible to trigger VSCREEN
> WAITREAD with a special message from a Wakeup machine?

When you say "trigger VSCREEN WAITREAD", do you mean that you would like a 
VSCREEN WAITREAD command to end  because of an external event?  If so, the 
answer is "No". 

Paul Whitmer and I were discussing this issue here a few weeks ago.

Alan Altmark

Senior Managing z/VM and Linux Consultant
IBM Systems Lab Services
IBM Z Delivery Practice
ibm.com/systems/services/labservices
office: 607.429.3323
mobile; 607.321.7556
[email protected]
IBM Endicott

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