Editing Dartmouth BASIC (section)

===New system===
One of the original goals of the program was to work programming into other coursework. This was a success, but it put considerable strain on the system and it became clear that it had no room for future growth.{{sfn|Kiewit|1971|p=11}}

In 1965, the team approached GE for support with ongoing development. In September, Vice President Louis Rader offered the new [[GE-635]], which ran approximately 10 times as fast and included two CPUs. Additionally, a second DN-30 would be added to handle more lines, enough for 150 simultaneous users.{{sfn|Kiewit|1971|p=11}} To house it, a larger facility would be needed than the basement of College Hall where the 265 was running. Peter Kiewit, Class of '22, along with additional support from the NSF, led to the construction of the Kiewit Computation Center, which opened in December 1966.{{sfn|Kiewit|1971|p=11}}

While waiting for this machine to arrive, in the summer and fall of 1966 a GE-635 at the [[Rome Air Development Center]] was used to develop MOLDS, the "Multiple User On-Line Debugging System". The GE-635 was operational in early 1967, and using MOLDS the new operating system was fully functional in September, at which time the GE-265 was sold off.{{sfn|Kurtz|1981|p=533}}

GE provided the machine for free for three years as part of a wider agreement under which Dartmouth would develop new versions of BASIC while GE used it to develop a new release of their version of the operating system.{{sfn|Kurtz|1981|p=533}} This collaboration proved to be a success;  GE began deploying these machines as their Mark II time-sharing systems,{{sfn|Kurtz|1981|p=534}} and by the end of the decade they were one of the largest time-sharing vendors in the world.{{sfn|Kiewit|1971|p=11}}

When this "Phase I" system became operational, the Dartmouth team began development of "Phase II", the ideal operating system. This was installed in March 1969, and changed its name to the [[Dartmouth Time-Sharing System]] shortly thereafter. When the three-year period was up, GE gifted the machine to the university. Although the two teams remained in contact, and several good-faith attempts were made to continue the relationship, little further collaboration occurred and the partnership officially ended on 20 September 1972.{{sfn|Kurtz|1981|p=533}}