dsp56800e Freescale Semiconductor, Inc, dsp56800e Datasheet - Page 76

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

Data Types and Addressing Modes
Several of the examples in Table 3-11 on page 3-25 and Table 3-12 demonstrate the use of assembler
forcing operators. These operators can be used in an instruction to force a desired addressing mode, as
shown in Table 3-13.
Other assembler forcing operators are available for hardware looping, jump and branch instructions as
shown in Table 3-14.
3-26
Force short immediate data
Force 9-bit immediate data
Force 16-bit immediate data
Force 24- or 32-bit immediate data
Force absolute short address
Force I/O short address
Force 16-bit absolute address
Force 24-bit absolute long address
Force short offset
Force 16-bit offset
Force 24-bit offset
Absolute short address—6 bit
(direct addressing)
I/O short address—6 bit
(direct addressing)
Absolute address—16-bit
(extended addressing)
Absolute long address—24-bit
(long extended addressing)
Addressing Mode
Desired Action
Table 3-13. Assembler Operator Syntax for Immediate Data Sizes
Table 3-12. Absolute Addressing Modes
DSP56800E Core Reference Manual
Notation in the Instruction Set
Forcing Operator Syntax
X:(Rn+>>xxxxxx)
X:(Rn+>xxxx)
Summary
X:(SP-<xx)
X:>xxxxxx
X:(Rn+<x)
X:xxxxxx
X:(SP-<x)
#>xxxxxx
X:<<pp
X:>xxxx
X:xxxx
#>xxxx
X:<<xx
#>xxx
X:aa
X:<xx
#<xx
Freescale Semiconductor
X:>>$804001
X:(SP->>$02)
X:(SP-<$02)
X:(SP->$02)
X:<<$FFE3
X:$18FC04
X:$00F001
X:<<$FFE3
Examples
X:>$C002
X:(R0+<3)
Example
X:$0002
X:<$02
X:<$02
X:>$02
X:>$02
#<$07
#>$07
#>$07
#>$07