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History / Folklore

"MVS is 100 lines of code, with 1,000,000 pointers and control blocks"
An Unknown IBM Instructor

"The more you learn about MVS, the more you know, you don't know."
An Unknown MVS Consultant

z/OS Releases

IBM's z/OS website

z/OS 1.9 (announced, but not released)

z/OS 1.8

z/OS 1.7

z/OS 1.6

z/OS 1.5

z/OS 1.4

z/OS 1.3

z/OS 1.2

z/OS 1.1

OS/390 Releases

Rumor has it that OS/390 V2R10 will remain in service through September, 2004.

OS/390 2.10

OS/390 2.9

OS/390 2.8

OS/390 2.7

OS/390 2.7

OS/390 2.6

OS/390 2.5

OS/390 2.4

OS/390 1.3

OS/390 1.2

OS/390 1.1

MVS Releases

MVS/ESA 5.2

MVS/ESA 5.1

MVS/ESA 4.3

MVS/ESA 3.1

MVS/XA 2.2

Anything before 2.2 is before my time...

MVS 370


Does anyone remember what EBCDIC stands for?
Extended Binary Coded Data Interchange Code

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