[Info-vax] SET TERM /TTSYNC on ancient VMS versions

[Stephen Hoffman]

On 2018-08-15 18:01:42 +0000, hans.huebner at gmail.com said:

> I've been playing around with...

XON (^Q, CTRL/Q, DC1) and XOFF (^S, CTRL/S, DC3) are how VAX/VMS and 
OpenVMS terminal drivers manage how much is sent to the terminal and 
when, and what and when data can be sent from the terminal to the host, 
and weird stuff will happen with terminal communications when those are 
disabled.

If you turn off flow control, you'll get communications problems.  
Overruns from host to terminal are more common, but there are folks 
that could outrun the receive buffers on some configurations.  And 
sometimes the host just isn't ready.  Sooner or later, there'll be 
problems with input or output.  Loss, corruptions or whatnot.

Use different keys.

Or read up on and maybe use SET TERMINAL /PASSALL and/or /PASTHRU (note 
the spelling on that latter one) and discover why nobody did that.  
/PASTHRU did honor XON and XOFF.

related: https://groups.google.com/d/msg/comp.os.vms/wf9jXKiAbWk/VTpDtzIE8h8J
etc,

"Back in the day"?  Primitive and slow and limited computers with awful 
user interfaces and a plethora of problems, now fondly remembered to 
the haze of history?





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