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DTFPH Macro
Figure 54 shows the correspondence between the operands of the DTFPH macro
and their MVS equivalents:
Figure 54. Relationship between DTFPH Macro and MVS equivalents
DTFPH OPERAND MVS EQUIVALENT
TYPEFLE
ASCII
CCWADDR
DEVICE
DEVADDR
LABADRR
HDRINFO
MOUNTED
XTNTXIT
OPEN macro
OPTCD=Q
Channel program address field of
IOB
UNIT parameter of DD statement
UNIT parameter of DD statement
EXLST parameter in DCB allows for
label checking exits
No corresponding element
DD statement
DEB
You can also use the file name of the DTFPH file as the ddname of the
corresponding MVS data set.
13.2.6.15 Comparison of Physical IOCS Elements
Figure 55. Comparison VSE and MVS Major Elements
VSE Major Elements MVS Major Elements
Define the file for physical IOCS (DTFPH)
macro and control block
Data Control Block (DCB) macro and
control block
TLBL statement DD statement
DLBL statement DD statement
EXTENT statement DD statement
ASSGN statement DD statement
OPEN macro OPEN macro
XTNTXIT routine Data Extent Block (DEB)
LABADDR routine EXLST in Data Control Block (DCB)
Command Control Block (CCB)
macro and control block
Data Control Block (DCB)
Input/Output Block (IOB)
Event Control Block (ECB)
Data Extent Block (DEB)
EXCP macro EXCP macro
WAIT macro WAIT macro
CLOSE macro CLOSE macro
FEOV macro FEOV macro
SECTVAL macro TRKCALC
SEOV macro Not applicable
LBRET macro RETURN macro
328 VSE to OS/390 Migration Workbook