AMODE Query / Modify Address Mode

AMODE The address mode in which CFS is currently operating.

AMODE 31|24 The address mode (Run Mode) of CFS is set to XS-31 or NXS (24-bit mode).

Standard when CFS starts: AMODE24. To change the default from AMODE24 to AMODE31, the AMODE ANY statement in the CFSMAIN initialisation module should be changed to AMODE 31.

Notes:

When executing various CFS commands in AMODE31 such as Action Codes (e.g. EDT), the necessary virtual memory in the upper memory space will be requested. This has the advantage that the 16MB limit does not exist, and thus as much memory as required can be requested.

It must be noted when switching from AMODE31 to AMODE24 that error situations can occur in later programs whereby requested memory in XS area cannot be addressed.