0 - 6 7 ▁computer ▁in ▁June ▁ 1 9 6 6 ▁ ▁IBM ▁begins ▁work ▁on ▁CP - 6 7 , ▁a ▁re implementation ▁of ▁CP - 4 0 ▁for ▁the ▁S / 3 6 0 - 6 7 . ▁▁ 1 9 6 7 ▁ ▁CP - 4 0 ▁( J anu ary ) ▁and ▁CP - 6 7 ▁( A pril ) ▁go ▁into ▁production ▁time - sh aring ▁use . ▁▁ 1 9 6 8 ▁ ▁CP / C MS ▁installed ▁at ▁eight ▁initial ▁customer ▁sites . ▁ ▁CP / C MS ▁submitted ▁to ▁IBM ▁Type - III ▁Library ▁by ▁M IT ' s ▁Lincoln ▁Labor atory , ▁making ▁system ▁available ▁to ▁all ▁IBM ▁S / 3 6 0 ▁customers ▁at ▁no ▁charge ▁in ▁source ▁code ▁form . ▁ ▁Res ale ▁of ▁CP / C MS ▁access ▁begins ▁at ▁time - sh aring ▁vendor ▁National ▁CSS ▁( be coming ▁a ▁distinct ▁version , ▁eventually ▁renamed ▁V P / CSS ). ▁▁ 1 9 7 0 ▁ ▁IBM ▁System / 3 7 0 ▁announced ▁( J une ) ▁– ▁without ▁virtual ▁memory . ▁ ▁Work ▁begins ▁on ▁CP - 3 7 0 , ▁a ▁complete ▁re implementation ▁of ▁CP - 6 7 , ▁for ▁use ▁on ▁the ▁System / 3 7 0 ▁series . ▁▁ 1 9 7 1 ▁ ▁First ▁System / 3 7 0 ▁sh ipped : ▁S / 3 7 0 - 1 5 5 ▁( J anu ary ). ▁▁ 1 9 7 2 ▁ ▁Ann