Wait state codes in z/Architecture mode

The wait state code appears in the program status word (PSW) when the operating system enters a wait state. A valid PSW for a coded wait state in z/Architecture® mode has one of the following general formats:

00020000 x0000000 00000000 0rrrrwww
00020000 x0000000 00000000 0rr00www
00020000 x0000000 00000000 00rrrwww
00020000 x0000000 00000000 0rrr0www

2

Bits 12-15 (the CMWP bits, with the 'W' bit being on).

x

Bits 32-35. Not part of the wait state information.

rrrr, rr00, 0rrr, rrr0

Bits 100-115, where r is the reason code for 8/12/16 bits and 0=zero.

A supplementary code accompanying the wait state code.

The wait state determines the size and position of the supplement code.

Usually the supplementary code is a reason code. Some wait state codes do not provide a supplementary code in the PSW. See the description of the individual wait state code for more information.

www

Bits 116-127.

The wait state code. The IBM-supplied wait state codes appear in this book . Installation-supplied programs can use the wait state codes X'FF0' through X'FFE'; see installation-supplied information for these codes.