Texas Instruments TMS320C3x - Manual (Page 171)

Immediate Addressing
6-18
6.5 Immediate Addressing
In immediate addressing, the operand is a 16-bit (short) or 24-bit (long) immediate
value contained in the 16 or 24 LSBs of the instruction word (expr). Depending
on the data types assumed for the instruction, the short-immediate operand can
be a 2s-complement integer, an unsigned integer, or a floating-point number. This
is the syntax for this mode:
Syntax: expr
Example 6–20 illustrates an instruction example with data before and after the
instruction is executed.
Example 6–20. Short-Immediate Addressing
SUBI 1,R0
Before Instruction After Instruction
R0 00 0000 0000 R0 00 FFFF FFFF
In long-immediate addressing, the operand is a 24-bit unsigned immediate
value contained in the 24 LSBs of the instruction word (expr). This is the syntax
for this mode:
Syntax: expr
Example 6–21 illustrates an instruction example with data from before and after
the instruction is executed.
Example 6–21. Long-Immediate Addressing
BR 8000h
Before Instruction After Instruction
PC 0000 PC 8000