Texas Instruments TMS320C3x - Manual (Page 460)

Instruction Set
13-2
13.1 Instruction Set
The ’C3x instruction set is well suited to digital signal processing and other
numeric-intensive applications. All instructions are a single machine word
long, and most instructions require one cycle to execute. In addition to multiply
and accumulate instructions, the ’C3x possesses a full complement of general-
purpose instructions.
The instruction set contains 113 instructions organized into the following func-
tional groups:
- Load and store
- 2-operand arithmetic/logical
- 3-operand arithmetic/logical
- Program control
- Interlocked operations
- Parallel operations
Each of these groups is discussed in the following subsections.
13.1.1 Load and Store Instructions
The ’C3x supports 13 load and store instructions (see Table 13–1). These
instructions can:
- Load a word from memory into a register
- Store a word from a register into memory
- Manipulate data on the system stack
Two of these instructions can load data conditionally. This is useful for locating
the maximum or minimum value in a data set. See Section 13.5 on page 13-28
for detailed information on condition codes.
Table 13–1. Load and Store Instructions
Instruction Description Instruction Description
LDE Load floating-point exponent POP Pop integer from stack
LDF Load floating-point value POPF Pop floating-point value from stack
LDF cond Load floating-point value
conditionally PUSH Push integer on stack
LDI Load integer PUSHF Push floating-point value on stack
LDI cond Load integer conditionally STF Store floating-point value
LDM Load floating-point mantissa STI Store integer
LDP Load data page pointer