IBM OS/390 User Manual

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

TYPEFLE
ASCII
CCWADDR
DEVICE
DEVADDR
LABADRR
HDRINFO
MOUNTED
XTNTXIT

OPEN macro
O P T C D = 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.

Figure 55. Comparison VSE and 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 m a c r o

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 m a c r o

WAIT macro 

WAIT m a c r o

CLOSE macro 

CLOSE m a c r o

FEOV m a c r o

FEOV m a c r o

SECTVAL macro 

TRKCALC

SEOV m a c r o

Not applicable

LBRET macro 

RETURN m a c r o

VSE to OS/390 Migration Workbook