Page of GC20-1807-7 As Updated April 1, 1981 by TNL GN25-0829
r'---- I I Functions and instructions CP_Assi§.i • Get free space (DMKFRE) • Release free space (DMKFRE) • Lock a page (DMKPTR) • Unlock a page (DMKPTR) • Test page status • Test page status and
lock (DMKCCW) • Store ECPS identification • SVC 8 (LINK) • SVC 12 (RETURN) • Scan for changed shared
paqes (DMKVMA) • Locate virtual I/O control
block (Dl'o!KSCN) • Invalidate paqe table (DMKVAT) • Invalid segment
table (DMKVAT) • Untranslate CSW (DMKUNT) • Free CCW storage (DMKUNT) • Locate real I/O control)
block (DMKSCN) • Common CCW command
processinq (DMKCCW) • Decode first CCW (DMKCCW) • Decode following CCW (DMKCCW) • Main entry to dispatch (DMKDSP) • Dispatch a block or a virtual
machine (DMKDSP) • LPSW • STNSM • STaSM • SSM • PTLB • SIa • SPT • SCKC • STPT • TCH • DIAGNOSE Processor 135-3,138, 1q5-3 148, 4341
x X X X X X x X X X X X X x X X x
x X X X X X X X X X X X X X X X X 3031 I 3031API 4331 X X X X X X x X X X X X X X X X X X x X X X X L- -I Figure 13.1. Functions and Instructions that ECPS Supports Part 2. Control Program 100.1

Apr il 1 f 1981 100.2 IBM System Programmer's Guide