> On Mar 25, 2018, at 7:23 PM, Bob Supnik <[email protected]> wrote:
>
> Mark Pizzolato pointed out that UNIT_RO is cleared unconditionally at DETACH.
> This makes static declaration of a unit as UNIT_RO impossible. He has
> proposed a change to distinguish a "static" read-only unit (UNIT_RO set but
> not UNIT_ROABLE) from the usual "dynamic" read-only, set by ATTACH -R or by a
> unit-specific SET command.
So how does one deal with things like paper tape readers, which are by defition
read-only? I've handled that by marking them ROABLE and supplying the R switch
in the attach handler.
paul
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