IBM System/370 145 Manual page 163

SHIFT AND ROUND DECIMAL
STORE CHANNEL ID
STORE CHARAcrERS UNDER MASK
STORE CLOCK
STORE CPU ID
STORE CONTROL
An option to generate some of the new System/370 general purpose
instructions is provided in ANS Full COBOL Versiqn 3 and ANS Subset
COBOL. The instructions are INSERT CHARACTERS UNDER MASK (ICM), COMPARE
LOGICAL LONG (CLCL), MOVE LONG (MVCL), and SHIFT AND ROUND DECIMAL (SRP).
Extended precision floating EQint. Mnemonics for extended precision
instructions and data formats are added to Assembler
0
(14K variant).
The DOS high-level language trans.lators currently available do not
support extended precision. A simulator for extended precision
operations, such as that provided by OS, is not provided in DOS.
Monitorinq feature. This feat1llre is not supported except for the
inclusion of a MONITOR CALL instruction mnemonic in Assembler D.
Time of day clock (Version 4 only). support of the time of day clock
for time of day values is a sys·tem generation option. When the option
is included, the operator can set or correct the time of day clock
during IPL. Any system or user task can then obtain the current time in
microseconds by issuing the GETI~~ macro, which will access the time of
day clock instead of the interval timer at location 80.
The time of day clock is not used by the job accounting interface;
hence, when both time of day clock. and job acc;:ounting,support are
included in a supervisor, interval timer support is included also to
provide the times required by the job accounting interface. Existing
user-written programs that issue 1:.he GETIME macro do not require
modification in order to be used .,ith a supervisor that has time of day
clock support inCluded.
Interval timer at IO.cation 80. The timer is used by the job
accounting interface and to SUppOl~t time intervals as in DOS Version 3.
Unless the option to support the t:.ime of day clock is included, the
interval timer is also used for tjLme of day values.
Clock comparator and CPU timer feature. This timing feature is not
su,pported.
Byte-oriented operands. The pl~ogrammer has the ability to byte-align
binary and floating-point data in Assembler Language programs, in ANS
COBOL programs (by omitting the SYNCHRONIZED clause), and in PL/I
programs (by specifying the UNALI~jNED attribute). However, COBOL and
PL/I still align unaligned fixed- and floating-point data prior to its
use.
1401/1440/1460 and 1401/40/60. 1410/7010 Compatibility features. Two
integrated emulator programs are provided: one to emulate
1401/1440/1460 programs and the ot~her to emulate 1410/7010 programs.
(See section 40 for a complete disicussion of these emulator programs.)
Emulator support of the 3330-serie~s is provided in version 4 only.
Consoles. The 3210 Model 1 and. the 3215 Model 1 Console Printer-
Keyboards are supported as the DOS: console device. A remote 3210 Model 2
console is not supported.
Channels. The byte multiplexer channel and selector channel mode are
supported. Block multiplexer mode is not supported. The IFA and 2319
direct access storage are supported in the same manner as 2314 disk
storage attached to a channel.
A Guide to the IBM System/370 Model 145 153