![background image](http://html1.mh-extra.com/html/texas-instruments/tms320c28x/tms320c28x_reference-manual_1097071277.webp)
LB 22bit
6-120
LB 22bit
Long Branch
SYNTAX OPTIONS
OPCODE
OBJMODE
RPT
CYC
LB 22bit
0000 0000 01CC CCCC
CCCC CCCC CCCC CCCC
X
−
4
Operands
22bit
22-bit program-address (0x000000 to 0x3FFFFF range)
Description
Long branch. Load the PC with the selected 22-bit program address:
PC = 22bit;
Flags and
Modes
None
Repeat
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Example
; Branch to subroutines in SwitchTable selected by Switch
; value:
SwitchTable:
; Switch address table:
.long Switch0
; Switch0 address
.long Switch1
; Switch1 address
.
.
MOVL XAR2,#Switch-
Table
; XAR2 = pointer to SwitchTable
MOVZ AR0,@Switch
; AR0 = Switch index
MOVL XAR7,*+XAR2[AR0] ; XAR7 = SwitchTable[Switch]
LB *XAR7
; Indirect branch using XAR7
SwitchReturn:
.
.
Switch0:
; Function A:
.
.
LB SwitchReturn
; Return: long branch
Switch1:
; Function B:
.
.
LB SwitchReturn
; Return: long branch
Summary of Contents for TMS320C28x
Page 30: ...1 12...
Page 80: ...This page intentionally left blank 2 50 This page intentionally left blank...
Page 269: ...IN loc16 PA 6 112 MOV AL 0 AL 0 UOUT IORegC AL IOspace IORegC AL 10...
Page 308: ...MAXCUL P loc32 6 151 Saturate MOVL Var64 2 ACC Store result into Var64 MOVL Var64 P...
Page 509: ...SUBL ACC P PM 6 352 SUBL ACC P PM ACC S B 11 M X 4 MOVH Y ACC 5 Store Q15 result into Y...
Page 585: ...This page intentionally left blank 7 32 This page intentionally left blank...