IBM System/370 145 Reference Summary page 76

IFA LOCAL STORAGE ASSIGNMENTS
Word Word
Word Assignments
Addr Name
Byte 0
Byte 1
_l
Byte 2
l
Byte 3
28
FD
Protect Key
Main Storage Data Address
29 FC• Flag
CCWOp
Mam Storage Count
2A
FM
Protect Key
CCW Address
28
FM
Umt Address Prev Op Algm
File Mask Algm
J
Byte Read Area
2C FA Cylinder No Head Number
Control Storage Addres
2D FB
Control Storage Count
2E FS
Work Area (A) Work Area (KL) Work Area (OLD_ Work Area (Dll
2F FL
M1m Op Link Word
BYTE DETAIL•
FCO Flag FC1
CCWOp
FW1 Prev Op Algm FW2 File Mask Algm
·---------··-·---·--·---
Cham Data Mult1track Rd or Sch HA 0
lnhSetFM
Com Chain Search H1
Wr or Sch HA Allow Wr HA, RO
SLI
Search Eq
Allow Wr Data
lnh Wr Count
II
Sktp
Count
AllowWr KO 3 lnh Wr Kand O
PCI Key AllowWr CKO
lnh Seek, Recal
Zero
Data Search ID lnh Seek Cyl
Cyl Overflow Read
Search Key 6 lnh Seek Head
Zero
Write/Search
Rd C or Sch ID
7 Index Passed
IFA CS AREA
Word
l
Word Assignments
1
Addr Byte 0
Byte 1
l
Byte 2
Byte 3
F900 FT AG Register Save Area
F904 Interrupt Buffer
F908
Interrupt Buffer
F90C Interrupt Buffer
FFAO 1ndex Trap Link for FL
FFA4 I Cycles CAW Backup
FFA8
FF 85 Save Area
CU No.
Drive No Cu Nor-!Max Dr No
FFAC Sense 0 Sense 1 Sense 2 Sense 5
FFFO Bit O=Seek Dir Head Save Area Flag
FFF4
Cylinder No Cytmder No Head No Head No
FFFB Record No Key Length Data length Data Length
FFFC Record Overflow Link Word
5.5