Texas Instruments TMS320C3x 사용자 설명서

Group Addressing Mode Instruction Encoding

 

13-22

Table 13–10. Indirect Addressing

(a) Indirect addressing with displacement

00000

*+AR

n(disp)

addr = AR

n + disp

With predisplacement add

00001

*– AR

n(disp)

addr = AR

n – disp

With predisplacement subtract

00010

*++AR

n(disp)

addr = AR

n + disp

AR

n = ARn + disp

With predisplacement add and modify

00011

*– – AR

n(disp)

addr = AR

n – disp

AR

n = ARn – disp

With predisplacement subtract and modify

00100

*AR

n++(disp)

addr = AR

n

AR

n = ARn + disp

With postdisplacement add and modify

00101

*AR

n – – (disp)

addr = AR

n

AR

n = ARn – disp

With postdisplacement subtract and modify

00110

*AR

n++(disp)%

addr = AR

n 

AR

n = circ(ARn + disp)

With postdisplacement add and circular modify

00111

*AR

n––(disp)%

addr = AR

n

AR

n = circ(ARn – disp)

With postdisplacement subtract and circular modify

(b) Indirect addressing with index register IR0

01000

*+AR

n(IR0)

addr = AR

n + IR0

With preindex (IR0) add

01001

*– AR

n(IR0)

addr = AR

n – IR0

With preindex (IR0) subtract

01010

*++AR

n(IR0)

addr = AR

n + IR0

AR

n = ARn + IR0

With preindex (IR0) add and modify

01011

* – – AR

n(IR0)

addr = AR

n – IR0

AR

n = ARn – IR0

With preindex (IR0) subtract and modify

01100

*AR

n++(IR0)

addr = AR

n

AR

n = ARn + IR0

With postindex (IR0) add and modify

01101

*AR

n – – (IR0)

addr= AR

n

AR

n = ARn – IR0

With postindex (IR0) subtract and modify

01110

*AR

n++(IR0)%

addr = AR

n

AR

n = circ(ARn + IR0)

With postindex (IR0) add and circular modify

01111

*AR

n – – (IR0)%

addr = AR

n

AR

n = circ(ARn – IR0)

With postindex (IR0) subtract and circular modify

addr

memory address

++

add and modify

AR

n

auxiliary registers AR0–AR7

– –

subtract and modify

circ( )

address in circular addressing

%

where circular addressing is performed

disp

displacement

IR

n

index register IR0 or IR1