dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 94

• Manufacturer Part Number: dsp56800e
• Description: 16-bit Digital Signal Controller Core
• Manufacturer: Freescale Semiconductor, Inc

Data Types and Addressing Modes
3.6.5.3
The address of the operand is zero extended to 24 bits. No registers are used to form the address of the
operand. When a long 32-bit memory location is accessed, the 16-bit absolute address is left shifted 1 bit
before the access occurs.
Figure 3-32 demonstrates the 16-bit absolute addressing mode.
3-44
Available for: Byte (BP), Word, Long
Assembler Syntax: X:xxxx
Additional Instruction Execution Cycles: 1
Additional Effective Address Program Words: 1
16-Bit Absolute Address: xxxx
$008079
X0
Figure 3-32. Absolute Addressing: 16-Bit Absolute Address
15
15
1
Before Execution
Absolute Address Example:
X Memory
2
XXXX
3
DSP56800E Core Reference Manual
4
0
0
MOVE.W X:$8079,X0
$008079
X0
15
15
1
After Execution
X Memory
2
$1234
Freescale Semiconductor
3
4
0
0