Texas Instruments TMS320C6000 Series Reference Manual page 5

Notational Conventions
This document uses the following conventions:
Program listings and program examples are shown in a
Here is a sample program listing:
LDW .D1 *A0,A1
ADD .L1 A1,A2,A3
NOP 3
MPY .M1 A1,A4,A5
To help you easily recognize instructions and parameters throughout the
book, instructions are in bold face and parameters are in italics (except
in program listings).
In instruction syntaxes, portions of a syntax that are in bold should be en-
tered as shown; portions of a syntax that are in italics describe the type of
information that should be entered. Here is an example of an instruction:
MPY src1,src2,dst
MPY is the instruction mnemonic. When you use MPY, you must supply
two source operands ( src1 and src2 ) and a destination operand ( dst ) of
appropriate types as defined in Chapter 3, TMS320C62x/C67x Fixed-
Point Instruction Set .
Although the instruction mnemonic (MPY in this example) is in capital let-
ters, the 'C6x assembler is not case sensitive — it can assemble mnemon-
ics entered in either upper or lower case.
Square brackets, [ and ], and parentheses, ( and ), are used to identify op-
tional items. If you use an optional item, you must specify the information
within brackets or parentheses; however, you do not enter the brackets or
parentheses themselves. Here is an example of an instruction that has op-
tional items.
[ label ] EXTU ( .unit ) src2, csta, cstb, dst
The EXTU instruction is shown with a label and several parameters. The
[ label ] and the parameter ( .unit ) are optional. The parameters src2, csta,
cstb, and dst are not optional.
Throughout this book MSB means most significant bit and LSB means
least significant bit .
A special icon is used to indicate material that applies only to the floating-
point ('C67x) DSP:
Notational Conventions
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