[Info-vax] DCL "READ/TIME_OUT=n" from terminal; timer resets if message written to screen

[Arne Vajhøj]

On 5/22/2021 4:14 PM, Dave Froble wrote:
> All my uses of a timer AST has been with a delta time.  All I've ever 
> needed.  But consider:
> 
> SUBMIT/AFTER=????
> 
> Where ???? is an absolute time.  I'm not aware of a timer AST being able 
> to use an absolute time.  Can it?  If not, what can?
> 
> Curious, not in need.

Docs says:

<quote>
$SETIMR
Set Timer — Sets the timer to expire at a specified time. On Alpha and 
Integrity server systems, this service accepts 64-bit addresses.

Format
SYS$SETIMR [efn] ,daytim ,[astadr] ,[reqidt] ,[flags]
...
daytim
OpenVMS usage: date_time
type: quadword
access: read only
mechanism: by 64-bit reference (Alpha and Integrity servers)
Time at which the timer expires. The daytim argument is the 64-bit 
address (on Alpha and Integrity
server systems) of a quadword time value. A positive time value 
specifies an absolute time at which
the timer expires; a negative time value specifies an offset (delta 
time) from the current time.
</quote>

Arne