cobol mvs/cobol 2 2

[hello74]

can anyone pls mention major differences between cobol 2 and mvscobol ?

thanks,

 

[webrabbit]

Are these both IBM products? If so, there should be an IBM publication to explain the differences. If not, who are the vendors?

 

[hello74]

yes....ibm

 

[Crox]

Hi,

If you need an explanation about differences of the old cobol compilers from IBM you should read the book COBOL/370 from Bookman / McGraw Hill because it explains a lot of those differences. For example: there are two major and very different releases of COBOL II.

At the moment, there is COBOL/390 which is also very different from COBOL/370. A nice book is COBOL for OS/390 from David Shelby Kirk / Prince. Looking at IBM's bookmanager, you can find a lot of COBOL MIGRATION GUIDEs from one release to an other.

But what is a pitty is that the old IBM's performance guide was never updated. The old manual told exactly about slower and faster definitions. Things like a S9(9) COMP-4 which was even slower than a S9(10) COMP-4 for example.

It takes a lot of time to know all of it. And perhaps you will never know A L L of it.....

Regards,

Crox

 

[WMK]

First, let's get the IBM product names correct. In "historical" order (for MVS, OS/390, z/OS; as VM, VSE, OS/400, etc are different)

- ANS COBOL (V4 was the last release
- OS/VS COBOL
- VS COBOL II
- SAA AD/Cycle COBOL/370
- IBM COBOL for MVS & VM
- IBM COBOL for OS/390 & VM
- IBM Enterprise COBOL for OS/390 & z/OS

Only the last of these is still supported *and* has no announced "drop" date.

As far as documentation comparing the most current product with several earlier ones, see the Migration Guide (online) at:

http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/IGY3MG10/CCONTENTS