IBM System/370 145 Manual page 182

1400/7010 files may
be
placed on the same disk pa~k, but this
arrangement may increase seek time if both files are processed at the
same time.
Character codes supported
by
the emulators for disk files are:
• EBCDIC representation for disk operations in move mode
• BCDIC-8 representation for disk operations in load mode. (Data
written in load mode must be converted to EBCDIC if i t is to be used
by programs other than the emulators.)
Disk files in 1400 format, which are created on a 1400/7010 system or
under stand-alone emulation, must be converted to a standard fixed-
length record format on 2311, 2314-type. or 3330-series disk packs
before emulation. Disk files created under CS/30 and CS/40 can be
processed by the 1401/1440/1460 emulator if the CS option is specified
at emulator generation.
To convert disk files in 1400 format, or CS/30 and CS/40 disks if
desired, to a standard format on a Model 145 disk, the user must dump
and restore his data as follows:
1. Dump the disk device, using a 1400/7010 disk-to-tape or disk-to-
card utility program. When converting files on 1301, 1311, 1405,
or 2302 disk devices that were created on a 1400/7010 system, the
utility is executed on the system used to create the file. When
converting files on 2302, 2311, or 2314 disks that were created
under stand-alone emulation, CS/30, or CS/40. the utility is
executed on a system/360 under control of the emulator used to
create the disk file.
2. Use the DOS Clear Disk utility program to format previously
initialized 2311, 2314-type, or 3330-series disk pack(s) for the
data.
3. Restore the data to a formatted 2311, 2314-type, or 3330·series
disk pack, using a 1400/7010 tape-to-disk or card-to-disk utility
program under control of a Model 145 emulator. The
1401/1440/1460 emulator is used to restore 1401/1440/1460 data;
the 1410/7010 emulator to restore 1410/7010 data.
DOS 1401/1440/1460 EMULATOR SUPPORT
For the DOS CS/30 and CS/40 user, the Model 145 DOS 1401/1440/1460
emulator continues ,the advantages of integra'ted emulation and provides
additional advantages, such as:
• Emulators operating concurrently in all three partitions (now a
restriction for the CS/30 user)
• Simulated 1400 storage that can begin at any address (CS/40 users
are restricted to beginning addresses that are multiples of 16K for
simulated 1400 stora~e)
• support of CS/30 and CS/40 disk and tape files and emulator control
statements
• system/310 data formats for emulator tape and disk files
• Added emulator control available to user at execution time
• DOS data management facilities and standard disk and tape label
processing
172 A Guide to the IBM System/370 Model 145