Assertion: early operating system | /r/CapableOf | become obsolete
Facets:
value: due to discontinuation of pdp-10
type: CAUSE
Source sentences:
text: Richard Stallman's experience with the Incompatible Timesharing System (ITS), an early operating system written in assembly language that became obsolete due to discontinuation of PDP-10, the computer architecture for which ITS was written, led to a decision that a portable system was