dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 94
dsp56800e
Manufacturer Part Number
dsp56800e
Description
16-bit Digital Signal Controller Core
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.DSP56800E.pdf
(706 pages)
- Current page: 94 of 706
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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
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