Mainframe, MVS and zOS Discussion

Hi,

What are AMODE, RMODE? And when do we use them? I've been compiling program for long but I never needed to set them to a value?

Are there more similar compiler option I should be knowing? Please guide.

start reading from here
http://www.redbooks.ibm.com/abstracts/sg246366.html

Also see this

http://www-01.ibm.com/support/knowledge ... h1912.html
http://www-01.ibm.com/support/knowledge ... pbeg27.htm