IBM OS/390 User Manual

The MVS TIME macro has an additional operand MIC,address that causes the
time of day to be returned in the eight-byte area specified by the address. The
time of day is in microseconds, with bit 51 equivalent to one microsecond.
Register 0 contains 0, and register 1 contains the date.

System

Operand

Register Content

VSE

STANDARD

H HM MS S

MVS

DEC

HH MM SS th

VSE

BINARY

seconds

MVS

BIN

hundredths of a second

VSE

TU

1/306 of a second units

MVS

TU

26 micro second units

H = hours

M = minutes

S = seconds

t = 0.1 seconds

h = 0.01 seconds

Figure 30. VSE and MVS Time Degrees of Precision

The MVS TIME macro returns the date and time into a work area when
LINKAGE=SYSTEM is specified. The date (Julian or Gregorian) and the time are
returned in packed decimal digits.

Example:

TIME

DEC,OUTAREA,DATETYPE=YYYYMMDD,LINKAGE=SYSTEM

. . . .

OUTAREA DS

0XL16

 HHMMSSHH DS

X

′12305919′

TIME OF DAY

DS

XL4

filler

 YYYYMMDD DS

X

′19980323′

DATE

DS

XL4

filler

The VSE PDUMP macro provides a hexadecimal dump of the general registers
and of the main/virtual storage area contained between the two address
parameters. The output is automatically written on the device assigned to
SYSLST with 121-byte records.

The MVS SNAP macro provides you with the same dump facility. However, you
must supply the data set (via the DD statement) on which the output is written
and a DCB for the data set must be opened before the SNAP macro is used.

Chapter 13. A s s e m b l e r