Searching End Of Data; Searching For A Record By Its Address - IBM 3741 Operator's Manual

Searching End of Data
Use this to find the last record in a data set. You can start
this search from the Update (U) or Index (X) modes.
· 1. Press FUNCT SEL lower and SEARCH EOD.
When the search is completed, the machine displays the last
record in the data set and is in the Update (U) mode. To get
the machine into Enter (El mode, press REC ADV. The
machine is now set so you can enter data.
Searching For A Record By Its Address
Use this to search for a particular record by its track and
sector address on the disk. You can select this function from
the Index (X), Update (U), or Enter (E) modes.
1. Press FUNCT SEL lower and SEARCH ADDRESS.
2. Key in the five-digit record address in positions 1
through 5:
xxOxx
--~--
/zero\
__.._ __.._
Track Sector
Number Number
3. Press REC ADV (starts the search).
The search stops on the specified address and displays the
record even if a deleted record is at the address. In this case,
the machine displays a 6 error.
After completing a search, the 3741 is in the Update (U) mode
and under manual control (program 0). From this position,
you can do another search by simply repeating the keying
sequence above.
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