Function/ SVC. No.
Macro Dec Hex Support POST 40 28 Used to post an ECB, IORB, TECB, or CCB.
Byte 2, bit 0 of the specified control block are
.turned 'on' by DMSDOS. DEQ 41 29 No operation, successful return code of 0 is given
in R15. See note 1.
ENQ 422A No operation, successful return code of 0 is given
in R15. See note 1.
43 2B Reserved UNIT CHECKS 442C Not supported, see note 2. EMULATOR INTERF. 45 2D Not supported, see note 2. OLTEP 46 2E Not s1;lpported, see note 2.
WAITF 47 2F Not supported, see note 2.
CRT TRANS 48 30 Not supported, see note 2.
CHANNEL PROG. 49 31 Not supported, see note 2. LIOCS DIAG. 50 32 Issued by a logical IOCS routine when the LIOCS is called to perform an operation for which the LIOCS was not generated to perform.
The error message "unsupported function in a LIOCS routine" is issued, and the session is then
terminated. RETURN HEADER 51 33 Not supported, see note 2.
TTIMER 52 34 No operation, successful return code of 0 is given
in R15. See note 1. RO is also cleared.
VTAMEXIT 53 35 Not supported, see note 2.
FREEREAL 54 36 Not supported, see note 2.
GETREAL 55 37 Not supported, see note 2. POWER 56 38 Not supported, see note 2. POWER 57 39 Not supported, see note 2. SUPVR. INTERF. 58 3A Not supported, see note 2. EO] INTERF. 59 3B Not supported, see note 2.
GETADR 60 3C Not supported, see note 2. GETVIS 61 3D Used to obtain free storage for scratch use or for
obtaining an area into which a relocatable program
may be loaded. The PAGE, POOL, and SV A GETVIS options are ignored. FREEVIS 62 3E Used to return the free storage obtained via an
earlier GETVIS call.
Figure 45 (Part 4 of 9). SVC Support Routines and Their Operation
VSE Support Under eMS 395

Function/ SVC. No.
Macro Dec Hex Support USE 63 3F The USE/RELEASE function has been replaced
by SVC 110 (LOCK/UNLOCK) for serially con-
trolling system resources. All SVC 63 and 64
requests are mapped into SVC 110 requests
respectively. Return codes previously associated
with USE/RELEASE under CMS/DOS are main-
tained.
RELEASE 64 40 Reference SVC 63. CDLOAD 65 41 Used to load a relocatable phase into storage,
unless the program has already been loaded. RUNMODE 66 42 Used by a problem program to find out if the pro-
gram is running in real or virtual mode. The call-
er's register 0 is zeroed to indicate that the
program is running in virtual mode.
PFIX 67 43 No operation, successful return code of 0 is given
in R15. See note 1.
PFREE 68 44 No operation, successful return code of 0 is given
in R15. See note 1.
REALAD 69 45 Not supported, see note 2.
VIRTAD 70 46 Not supported, see note 2.
SETPFA 71 47 No operation, successful return code of 0 is given
in R15. See note 1.
GETCBUF/FREECBUF 72 48 Not supported, see note 2.
SETAPP 73 49 Not supported, see note 2. PAGE FIX 744A Not supported, see note 2.
SECTVAL 75 4B Used by I/O routines to obtain a sector number
for a 3330, 3330-11, 3340, or 3350 device.
SYSREC 76 4C Not supported, see note 2.
TRANSCCW 77 4D Not supported, see note 2.
CHAP 78 4E Not supported, see note 2.
SYNCH 79 4F Not supported, see note 2.
SETT 80 50 Not supponed, see note 2.
TESTT 81 51 Not supported, see note 2.
LINKAGE 82 52 Not supported, see note 2. ALLOCATE 83 53 Not supported, see note 2.
SET LIMIT 84 54 Not supported, see note 2.
Figure 45 (Part 5 of 9). SVC Support Routines and Their Operation
396 VM/SP System Programmer's Guide