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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure ASCBK Address-Space-Control Block
Address space management area.
This area contains fields used to manage and locate the
address space itself. All fields in this area are
serialized by the ASCBK lock (the lockword at ASCLOCK)
unless specifically noted otherwise.
0000 0 Address 4 ASCOFPNT Host Logical Address Forward
pointer to next ASCBK in chain of
ASCBKs anchored from VMDASCBK of
the owner's base VMDBK. This
chain defines what address spaces
are owned by the VMDBK.
SYSTEM-owned spaces are anchored
from the SYSTEM VMDBK. This field
is serialized by the owner's
ASCBK-queue lock (VMDASCLK). The
chain is ended by a forward
pointer of zero.
0004 4 Address 4 ASCSFPNT Host Logical Address Forward
pointer to next ASCBK in the
chain of ASCBKs anchored from
RSASHRSP in HCPRSM. This is the
chain of shareable address
spaces, and is serialized by the
lock at RSASHRLK. The chain is
ended by a forward pointer of
zero.
0008 8 Address 4 ASCSBPNT Host Logical Address Backward
pointer to previous ASCBK in the
chain of ASCBKs anchored from
RSASHRSP in HCPRSM. The ASCSBPNT
field of the first ASCBK in the
chain is zeros.
000C 12 Signed 4 ASCSEQNO r-access sequence number,
incremented on address space
reset to match the ASTE sequence
number (ASTSN). r-access i-ASITs
(which use this sequence number)
are sensitive to address space
reset operations.
0010 16 Character 32 ASCSPCID (0) Space identification:
0010 16 Character 8 ASCUSRID Owning userid, padded on right
with blanks.
0018 24 Character 24 ASCNAME Address space name, padded on
right with blanks.
0030 48 Address 4 ASCSNTBK Host Logical Address Pointer to
owning SNTBK (ASCTSNT=1)
0034 52 Address 4 ASCASTEr Host Real Address Pointer to
ASN-Second-Table Entry (ASTE) for
the address space. Serialized by
task ownership at creation,
thereafter unchanged until space
is destroyed.
0038 56 Dbl-Word 8 ASCEASIT (0) ASCBK e-ASIT.
0038 56 Address 4 ASCASTEl Host Logical Address Pointer to
ASN-Second-Table Entry ASCASTEr
<- LoadRealAddress(ASCASTEl)
003C 60 Signed 4 ASCSCRSN Address space creation sequence
number.
0040 64 Address 4 ASCSPIBK Host Logical Address Pointer to
chain of SPIBKs designating which
users are permitted to attach
this space to their guest-use
access list. This field is
serialized by the
space-permission- manager lock
(RSASPMLK in HCPRSMCM).
0044 68 Address 4 ASCOWNER Host Logical Address Pointer to
(base) VMDBK of owning virtual
configuration, or SYSTEM VMDBK if
CP owned.
0048 72 Dbl-Word 8 ASCLOCK (3) Lockword for shared/exclusive
defer lock, protecting fields in
the ASCBK and ASTE. For System
Utility address spaces managed by
HCPHAMAP and HCPHAMDP and
HCPHSURO, ASCLOCK exclusive is
sufficient to invalidate a STE
without SEGTRANS. A share of
ASCLOCK must be obtained *before*
trying to obtain SEGTRANS when
validating the STE.
0060 96 Dbl-Word 8 ASCHIBYT The highest addressable byte of
storage in this address space.
The "address limit" of the
address space in bytes is one
greater than this value. Since
X'FFFFFFFF_FFFFFFFF' is a valid
address in z/Arch, code must
check for wrap-to-zero when
adding one to ASCHIBYT to
calculate the "address limit" of
the address space in bytes. For
the guest base address space,
this value should be copied to
SIEGMSLM in each VMDBK in the
virtual configuration. See
HCPUVBAS.
0068 104 Dbl-Word 8 ASCDEFSZ Defined storage size in
addressable bytes, minus one. If
DEF STOR CONFIG was used to
define multiple discontiguous
extents of addressable defined
storage, this field contains the
sum of the sizes in bytes of all
of the individual extents (minus
one). Minus one notation used so
that a total size of 16 Exabytes
may be represented without
ambiguity (as
x'FFFFFFFF_FFFFFFFF').
0070 112 Signed 4 * Reserved for IBM use
0074 116 Bitstring 1 ASCSTATE Flags indicating current state
Serialized by holding ASCLOCK
exclusive, the owning VMDBK's
PTIL exclusive, AND by Console
Function mode on the owning user.
1... .... ASCSHARE X'80' ASCSHARE At least one
configuration other than the
owner has permission to access
this address space.
.1.. .... ASCPUBLC X'40' ASCPUBLC Any user may
attach this address space to
their guest-use access list for
read/only access.
..1. .... ASCE1ATT X'20' ASCE1ATT Storage element 1
is Attached SCLP ATTACH ELEMENT
performed
...1 .... ASCE1SBY X'10' ASCE1SBY Storage element 1
is Standby SCLP ATTACH ELEMENT
not performed ASCEL1st non-zero
.... 1... ASCE1RSV X'08' ASCE1RSV Storage element 1
is Reserved SCLP ATTACH ELEMENT
not performed ASCEL1st zero
ASCEL1rv non-zero
..11 1... ASCE1DEF ASCE1ATT+ASCE1SBY+ASCE1RSV
ASCE1DEF Storage element 1 is
defined (may be Reserved,
Standby, or Attached)
.... ..1. ASCRUSYS X'02' ASCRUSYS DPPCA rollup is to
be performed using the system
VMDBK rather than the guest's
VMDBK. This generally corresponds
to ASCSHARE, except during
address space isolate processing.
.... ...1 ASCMDEXT X'01' ASCMDEXT DEFINE STORAGE
CONFIG has been used to define
multiple discontiguous
addressable extents for this
address space. The ASCSTCFG area
contains the storage
configuration definition.
0075 117 Bitstring 1 ASCTYPE Code indicating type of address
space These are assigned as bits,
but only one bit will ever be
set. This is done to allow code
to test for combinations with one
instruction.
1... .... ASCTUSER X'80' ASCTUSER A user's base
address space
.1.. .... ASCTDATA X'40' ASCTDATA A data space
created by user request through
diagnose x'23C'
..1. .... ASCTSYSX X'20' ASCTSYSX The
system-execution address space
...1 .... ASCTSYSU X'10' ASCTSYSU A system utility
address space
.... .1.. ASCTSNT X'04' ASCTSNT An SNTBK "address
space"
0076 118 Bitstring 1 ASCFRMCD Frame use code for this address
space
0077 119 Bitstring 1 ASCKEY Bits 0-7 are the key with which
to initialize pages in the
address space.
0078 120 Signed 4 ASCIACCT Count of i-access pages in the
address space which are locked or
under (possible loss of control)
translation through this ASCBK.
007C 124 Signed 4 ASCITRCT Count of in-process i-access
manual translations in the
address space.
0080 128 Signed 4 ASCRTRCT Count of in-process r-access
manual translations in the
address space.
0084 132 Signed 4 * Reserved for IBM use
0088 136 Address 4 ASCTYPTR Host Logical Address Pointer to
address space type specific
control block (PTRMB for PTRM
address spaces). The address
space type specific control block
must itself contain a CP use
Address space Allocation block
(CAABK) at offset zero.
008C 140 Bitstring 1 ASCFOLST Flags indicating what Frame Owned
list (Owning VMDBK UFO, or
Shared) frames are to be put on.
1... .... ASCOUFO X'80' ASCOUFO Frames for this
address space are to be placed on
the owning VMDBK's UFO list.
.1.. .... ASCSFO X'40' ASCSFO Frames for this
address space are to be placed on
the Shared Frame Owned (SFO)
list.
WARNING: There is code in various places that checks the
address space sub-type flag value without first checking
address space type flag, so be very careful to avoid
duplication when defining new sub-types.
008D 141 Bitstring 1 ASCSUTYP Flags indicating address space
sub-type.
1... .... ASCUPTRM X'80' A PTRM address space
(sub-type of type ASCTSYSU).
.1.. .... ASCUPREF X'40' A preferred address space
(sub-type of type ASCTUSER).
..1. .... ASCUVDSK X'20' A VDISK address space
(sub-type of type ASCTSYSU).
...1 .... ASCUFTC X'10' A full track cache address
space (sub-type of ASCTSYSU)
.... 1... ASCUCONN X'08' The Connectivity (aka ISFC)
address space (sub-type of type
ASCTSYSU).
.... .1.. ASCUIDNT X'04' The System-Identity address
space, which identity maps all
storage below 2G with DAT tables
(sub-type of ASCTSYSU).
.... ..1. ASCUREAL X'02' The System-Real address
space, which identity maps all of
real storage (including real
storage above 2G) using an RSD
(sub-type of ASCTSYSU).
008E 142 Bitstring 1 ASCMISC Miscellaneous flag bits.
Modification of these bits is
serialized by holding the ASCLOCK
exclusive.
1... .... ASCDSTRY X'80' When a release is part of
an address space destroy, this
bit is set. This bit indicates
that the address space destroy
thread holds the ASCLOCK
exclusive. When this bit is ON
subsequent code that is part of
the thread can assume the lock is
held exclusive. This bit is set
after the ASCLOCK is acquired
exclusive and prior to the lock
being destroyed.
.1.. .... ASCRELOC X'40' This address space is being
relocated via the VMRELOCATE
process.
..1. .... ASCRELSRC X'20' When ASCRELOC is one, this
bit is valid and indicates the
direction of the move. When one,
this is the source/outbound
ASCBK. When zero, this is a
destination/inbound ASCBK.
...1 .... ASCSHVDK X'10' Shareable vdisk (defined in
user directory rather than by
DEFINE command)
.... 1... ASCAL16K X'08' Region and segment tables
must be 16K-aligned
008F 143 Bitstring 1 * Reserved for IBM use
0090 144 Signed 4 ASCMSO Main Storage Origin for preferred
guest base address space. Only
valid when ASCTYPE = ASCTUSER and
ASCSUTYP = ASCUPREF.
0094 148 Signed 4 ASCCTSPI Count of users permitted to this
address space. Equal to the
number of SPIBKs on the ASCSPIBK
queue. Serialized by the Space
Permission Manager lock (RSASPMLK
in HCPRSAMP).
End of Address Space management area
Address space statistics area.
Current usage information for this address space
Delta-Pinned-Page-Count Array (DPPCA) for page class 0
Used by both hardware and software to maintain pinned
page counts for page class 0 pages. Page class 0 is
used for base address space pages owned by the user. It's
pointed to by the class 0 Delta-Pinned-Page-Count-Array
Origin in the SIEBX, SIEDPPCAO. The page class 1
array is used for NSS/DCSS imbedded shared pages and
resides in the RSMBK.
0098 152 Dbl-Word 8 ASCDPPCA (0)
0098 152 Signed 4 ASCDPPB Delta-pinned-page-count for all
class 0 pages pinned below 2G
009C 156 Signed 4 ASCDPPA Delta-pinned-page-count for all
class 0 pages pinned above 2G
00A0 160 Signed 4 ASCCTPRS Count of resident pages < 2G
The following fields,
ASCCTPLK/ASCCTPLKA, which contain
counts of frames locked in
absolute, cannot be relied upon
to be instantaneously correct.
These counts are modified by the
DPPCA
(Delta-Pinned-Page-Count-Array)
roll-up routine which harvests
the DPPCA counts and rolls them
into these counts at specific
times. In between calls, these
counts may not reflect pins that
have occurred or may not reflect
unpins that have occurred. Care
must be taken to ensure code that
references these fields has no
dependency on instantaneous
correctness. When referencing a
private address space, the counts
can be made accurate by calling
the HCPLALRU DPPCA rollup routine
since the counts are private per
space. However, for shared
address spaces, calling HCPLALRU
still does not guarantee the
counts are completely accurate
because HCPLALRU rolls up DPPCA
counts for only the R11 user.
Other users may also have
outstanding pins/unpins that are
not included.
00A4 164 Signed 4 ASCCTPLK Count of locked pages <2G
00A8 168 Signed 8 ASCCTPLKA Count of locked pages >2G
00B0 176 Signed 4 ASCCTPGS Count of paging slots.
00B4 180 Signed 4 ASCCTXBK Count of xstore blocks in this
address space. XSTSTATL must be
held to update this field.
00B8 184 Signed 4 * Reserved for ASCCTPRG expansion
00BC 188 Signed 4 ASCCTPRG Count of resident pages >= 2G
00C0 192 Signed 4 ASCCTINS Count of instantiated pages, i.e.
the total number of unique pages
regardless of where they reside
in the storage hierarchy. Compare
& Swap to update. This field is
applicable to ASCTUSER, ASCTDATA,
& ASCTSNT spaces only, or
ASCTSYSU base space for the
SYSTEM VMDBK
00C4 196 Signed 4 * Reserved for IBM use
00C8 200 Signed 4 ASCHLLC Count of pages locked in host
logical storage
00CC 204 Signed 4 ASCHLRC Host logical resident count
Updates to this field are
serialized by the SXSPM Queue
Lock - RSASXQLK
00D0 208 Signed 4 ASCCTIBRb2g Count of IBR pages on the frame
owned list that are backed by
frames < 2G. Compare & Swap to
update.
00D4 212 Signed 4 ASCCTIBRa2G Count of IBR pages on the frame
owned list that are backed by
frames > 2G. Compare & Swap to
update.
00D8 216 Signed 4 ASCCTAGLb2g Count of IBR pages on the global
aging list that are backed by
frames < 2G. Hold RSAAGINL to
update.
00DC 220 Signed 4 ASCCTAGLa2g Count of IBR pages on the global
aging list that are backed by
frames > 2G. Hold RSAAGINL to
update.
00E0 224 Signed 4 ASCCTRABISb2g Count of non-faulted pages read
in by a block read, made IBR,
currently on the frame owned or
global aging list, and backed by
frames < 2G. Compare & Swap to
update.
00E4 228 Signed 4 ASCCTRABISa2g Count of non-faulted pages read
in by a block read, made IBR,
currently on the frame owned or
global aging list, and backed by
frames > 2G. Compare & Swap to
update.
RESERVED counts for ASCTYPE=ASCTSNT spaces.
00E8 232 Signed 4 * Reserved for ASCCTRSV expansion
00EC 236 Signed 4 ASCCTRSV RESERVED frame count. Updates are
serialized by the SET RESERVED
Lock - RSARSDLK.
00F0 240 Signed 4 * Reserved for IBM use
00F4 244 Signed 4 ASCDSRSV Count of times Demand Scan could
not move any pages from the SUFO
to the Aging List for this NSS or
DCSS because doing so would
violate its RESERVED setting.
End of RESERVED counts for ASCTYPE=ASCTNT spaces.
Cumulative historical counts, when address space is private
00F8 248 Signed 4 ASCCPPST Count of private address space
pages stolen
00FC 252 Signed 4 ASCCPPGR Count of private address space
pages read from DASD.
0100 256 Signed 4 ASCCPPGW Count of private address space
pages written to DASD.
0104 260 Signed 4 ASCCPXRD Count of private address space
pages read from XSTORE.
0108 264 Signed 4 ASCCPXWT Count of private address space
pages written to XSTORE.
010C 268 Signed 4 ASCCPMIG Count of private address space
pages migrated by CP from XSTORE
to DASD.
0110 272 Signed 4 ASCCPINT Count of private instantiated
pages. Updated via CS.
0114 276 Signed 4 ASCCPREL Count of private pages whose
frames were reclaimed without
preserving the page content
because of the guest page state
(that is, CMM2 state or contents
were released by the guest).
Updated via CS.
0118 280 Signed 4 ASCCPINV Count of private pages made IBR.
Updated while holding VMDUFOLK.
011C 284 Signed 4 ASCCPPFI Count of private IBR pages that
were revalidated while on the
frame owned list. Updated while
holding VMDUFOLK.
0120 288 Signed 4 ASCCPPFA Count of private IBR pages that
were revalidated while on the
global aging list. Updated while
holding RSAAGINL.
0124 292 Signed 4 ASCCPFRY Count of private IBR pages on the
global aging list that were
already backed on auxiliary
before the frames needed to be
reclaimed. Updated while holding
RSAAGINL.
0128 296 Signed 4 ASCCPFNR Count of private IBR pages on the
global aging list that were
written to XSTORE or auxiliary
storage immediately prior to the
frames being reclaimed. Updated
while holding RSAAGINL.
012C 300 Signed 4 ASCCPXRL Count of XSTORE blocks released
by migration when the private
page contents were already in
auxiliary storage. Updated by
migration task (on master
processor).
Cumulative historical counts, when address space is shared
0130 304 Signed 4 ASCPTRSH Cumulative count of page
translations for shared pages.
0134 308 Signed 4 ASCCSPST Count of shared address space
pages stolen
0138 312 Signed 4 ASCCSPGR Count of shared address space
pages read from DASD.
013C 316 Signed 4 ASCCSPGW Count of shared address space
pages written to DASD.
0140 320 Signed 4 ASCCSXRD Count of shared address space
pages read from XSTORE.
0144 324 Signed 4 ASCCSXWT Count of shared address space
pages written to XSTORE.
0148 328 Signed 4 ASCCSMIG Count of shared address space
pages migrated by CP from XSTORE
to DASD.
014C 332 Signed 4 ASCCSINT Count of shared instantiated
pages.
0150 336 Signed 4 ASCCSREL Count of shared pages whose
frames were reclaimed without
preserving the page content
because of the guest page state
(that is, CMM2 state or contents
were released by the guest).
0154 340 Signed 4 ASCCSINV Count of shared pages made IBR.
0158 344 Signed 4 ASCCSPFI Count of shared IBR pages that
were revalidated while on the
frame owned list.
015C 348 Signed 4 ASCCSPFA Count of shared IBR pages that
were revalidated while on the
global aging list.
0160 352 Signed 4 ASCCSFRY Count of shared IBR pages on the
global aging list that were
already backed on auxiliary
before the frames needed to be
reclaimed.
0164 356 Signed 4 ASCCSFNR Count of shared IBR pages on the
global aging list that were
written to XSTORE or auxiliary
storage immediately prior to the
frames being reclaimed.
0168 360 Signed 4 ASCCSXRL Count of XSTORE blocks released
by migration when the shared page
contents were already in
auxiliary storage.
016C 364 Address 4 * Reserved for IBM use
End of address space statistics area.
The following fields are serialized by the available list
replenishment demand scan lock. They are used to sort the
queue of stolen FRMTEs by address space (for user address
space frames, VDISK address space frames, and NSS/DCSS
shared segment frames) and by virtual address megabyte
(for NSS/DCSS shared segment frames only).
0170 368 Address 4 ASCSTLNX Host Logical Address Address of
the next ASCBK for an address
space from which pages were
stolen in this iteration of the
steal task. Each iteration will
initialize this field to
x'FFFFFFFF'. When the entire
queue of FRMTEs is sorted (by
address space), the last ASCBK in
this chain will have x'FFFFFFFF'
in this field.
0174 372 Address 4 * Reserved for IBM use
0178 376 Address 8 ASC1STFRG Host Logical Address Address of
the first FRMTE that was stolen
from this address space in this
iteration of the steal task, and
anchor of the queue of all FRMTEs
stolen from this address space by
this iteration of the steal task
(queued by FRMTE field FRMFPNTG).
Each iteration will initialize
this field to -1, and a FRMTE
FRMFPNTG value of -1 indicates
that it is the last FRMTE on the
queue.
0180 384 Address 8 ASCLSTFRG Host Logical Address Address of
the last (processed) FRMTE that
was stolen from this address
space in this iteration of the
steal task. Each iteration will
initialize this field to -1 and a
FRMTE FRMFPNTG value of -1
indicates that it is the last
FRMTE on the queue. Only used
when sorting FRMTEs for normal
user pages, which do not need to
be sorted by segment (virtual
address megabyte). For NSS/DCSS
shared segment page FRMTEs, use
ASC1STPG instead.
0188 392 Address 8 ASC1STPG Host Real Address Address of the
first PGMBK for this address
space from which pages were
stolen in this iteration of the
steal task, and anchor of the
queue of all PGMBKs for this
address space from which pages
were stolen in this iteration of
the steal task (queued by PGMBK
field PGMGNPGM). Each iteration
will initialize this field to all
FFs, and all FFs in a PGMBK
PGMGNPGM field indicates that it
is the last PGMBK on the list.
Only used when sorting FRMTEs for
NSS/DCSS shared segment pages,
which must be sorted by segment
(virtual address megabyte). For
normal user page FRMTEs, use
ASCLSTFRG instead.
0190 400 Address 8 ASCLSTPG Host Real Address Address of the
last PGMBK for this address space
from which pages were stolen in
this iteration of the steal task.
Each iteration will initialize
this field to all FFs, and all
FFs in a PGMBK PGMGNPGM field
indicates that it is the last
PGMBK on the list. Only used when
sorting FRMTEs for NSS/DCSS
shared segment pages, which must
be sorted by segment (virtual
address megabyte).
Region Translation Cache
ASCR0STD, ASCR0RFT, ASCR0RST, and ASCR0RTT, are in
ASCE format, that is, the bits which define the table
level are DT bits (level of the designated table), not
R*TE format TT bits (which indicate the level of the
table containing the R*TE). Any ASCR0R*T fields
corresponding to table levels higher than that
designated by the current ASCE are set to zero.
Serialization of these fields is as follows: For the
entry designating the current highest level table for
the address space (that is, the entry which matches the
current ASCE), PTIL must be held exclusive. For all
lower level table entries, either PTIL must be held
exclusive, or a share of PTIL must be held along with
RTETRANS in the next higher level R*TE which designates
the same table.
0198 408 Dbl-Word 8 ASCR0STD Host Real Address + other bits
Rx=0 segment table designation
01A0 416 Dbl-Word 8 ASCR0RFT Host Real Address + other bits
Rx=0 region first table
designation
01A8 424 Dbl-Word 8 ASCR0RST Host Real Address + other bits
Rx=0 region second table
designation
01B0 432 Dbl-Word 8 ASCR0RTT Host Real Address + other bits
Rx=0 region third table
designation
01B8 440 Dbl-Word 8 * (3) Reserved for IBM use
01D0 464 Signed 4 ASCMVABV Number of times a page in this
address space with a frame
address < 2G was moved to a
frame with address >= 2G.
01D4 468 Signed 4 ASCMVB2G Number of times a page in this
address space was moved from a
frame with address >= 2G to
one < 2G.
01D8 472 Signed 8 * (5) Reserved for IBM use
Address Space Storage Configuration area
This array contains address extent information for each
defined address extent. For most address spaces, there
will only be one extent defined, from 0 to ASCHIBYT. If
the DEFine STORage CONFIGuration command was used to
define multiple discontiguous address extents, this array
contains one additional entry for each additional address
extent defined. Up to eight extents are allowed, the
first extent must begin at address zero.
Individual array elements are mapped by STCONFIG DSECT.
Array elements must be sorted in ascending virtual address
order. Address ranges must not overlap, and must not be
contiguous.
00000008 ASCSTELS 8 Number of elements in storage
configuration array
0200 512 Signed 4 ASCSTCAE Number of additional storage
configuration array elements used
to represent the current storage
config. Is also index of last
used element. Element 0 is always
used. Must be between 0 and
ASCSTELS-1, inclusive.
0204 516 Signed 4 * Reserved for IBM use
0208 520 Signed 8 * (0)
0208 520 Bitstring 128 ASCSTCFG (0) ASCSTCFG area contains ASCSTELS
elements, two doublewords each
0208 520 Signed 8 ASCSTCE0 (2) ASCSTCFG element 0
00000010 ASCSTLEN *-ASCSTCE0 Length of one element
0000000E ASCWK (ASCSTELS-1)*2
0218 536 Signed 8 * (14) Remaining elements
0288 648 Address 4 ASCSTCMD Host Logical Address Pointer to
the GSDBK containing saved image
of the storage configuration
definition string as issued on
the actual DEFine STORage
CONFIGuration command
Address Space Storage Element Data Area
While a typical configuration would have at most 512
address increments per element (if using a sufficiently
large increment size), we must also allow for the
artificial increment size of 1M regardless of total
storage size. For "DEF STOR 16E", this means that we
would have 16E/M, or 16T increments. This requires that
we define ASCRNMAX as FD. This also requires ASCEL0cf to
be defined FD since all storage would be defined to be in
element 0, and there would be no element 1.
Changes to the "nbr increments" fields should be done
under exclusive control of the ASCLOCK lock.
028C 652 Signed 4 * Reserved for IBM use The bit maps
of assigned/unassigned address
increments are valid ONLY if
element 1 is defined.
Element 0 can have 512 increments.
Element 1 can have 512 increments.
So we need 1024 bits.
But we don't map 512 bits to each element.
If element 0 has 'n' increments,
then increment 'n+1' is the first of element 1.
0290 656 Bitstring 128 ASCELbmp Assigned address increments
0310 784 Signed 8 ASCEL0cf EL 0 nbr increments configured
0318 792 Signed 2 ASCEL0st EL 0 nbr increments standby
031A 794 Signed 2 ASCEL0rs EL 0 nbr increments reserved
031C 796 Signed 2 ASCEL1cf EL 1 nbr increments configured
031E 798 Signed 2 ASCEL1st EL 1 nbr increments standby
0320 800 Signed 2 ASCEL1rs EL 1 nbr increments reserved
0322 802 Signed 2 * Reserved for IBM use
0324 804 Signed 4 * Reserved for IBM use
0328 808 Signed 8 ASCRNMAX Maximum storage increment number
Should be equal to the sum of
ASCEL0cf + ASCEL0st + ASCEL0rs +
ASCEL1cf + ASCEL1st + ASCEL1rs
0330 816 Signed 8 ASCSTINC Storage increment size:M
0338 824 Dbl-Word 8 * Reserved for IBM use
End of ASCBK
0340 832 Dbl-Word 8 ASC$END (0) End of control block
00000340 ASCLEN *-ASCBK Length of ASCBK in bytes
00000068 ASCSIZE (ASCLEN+7)/8 Size of ASCBK in
doublewords
DSECT to map individual ASCSTCFG storage configuration
elements
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