DEC RSX-11D and its COBOL compiler?

Paul Koning paulkoning at
Tue May 29 09:22:14 CDT 2018

> On May 29, 2018, at 10:10 AM, Bill Degnan <billdegnan at> wrote:
> Is AIS the same as AIDCS?

No.  IAS (not AIS) is an RSX-11/D variant that intended to add timesharing
capabities to RSX-11/D.  RSX-11/D was pretty much limited to fixed purpose
real-time and turnkey applications (such as Typeset-11) because of the
inflexible way in which it managed memory through "partitions".  That term
also shows up in RSX-11/M, I think, but in /D it was quite rigid and not
suitable for situations where the applications to be run were not known
ahead of time -- as would happen in timesharing systems with programmers
using it.


More information about the cctech mailing list