Datasheet

dsPIC30F

TABLE 10-9: PROGRAM FLOW INSTRUCTIONS

Assembly Syntax Description Words Cycles

BRA Expr Branch unconditionally 1 2

BRA Wn Computed branch 1 2

BRA C,Expr Branch if Carry (no Borrow) 1 1 (2)

BRA GE,Expr Branch if greater than or equal 1 1 (2)

BRA GEU,Expr Branch if unsigned greater than or equal 1 1 (2)

BRA GT,Expr Branch if greater than 1 1 (2)

BRA GTU,Expr Branch if unsigned greater than 1 1 (2)

BRA LE,Expr Branch if less than or equal 1 1 (2)

BRA LEU,Expr Branch if unsigned less than or equal 1 1 (2)

BRA LT,Expr Branch if less than 1 1 (2)

BRA LTU,Expr Branch if unsigned less than 1 1 (2)

BRA N,Expr Branch if Negative 1 1 (2)

BRA NC,Expr Branch if not Carry (Borrow) 1 1 (2)

BRA NN,Expr Branch if not Negative 1 1 (2)

BRA NOV,Expr Branch if not Overflow 1 1 (2)

BRA NZ,Expr Branch if not Zero 1 1 (2)

BRA OA,Expr Branch if Accumulator A Overflow 1 1 (2)

BRA OB,Expr Branch if Accumulator B Overflow 1 1 (2)

BRA OV,Expr Branch if Overflow 1 1 (2)

BRA SA,Expr Branch if Accumulator A Saturate 1 1 (2)

BRA SB,Expr Branch if Accumulator B Saturate 1 1 (2)

BRA Z,Expr Branch if Zero 1 1 (2)

CALL Expr Call subroutine 2 2

CALL Wn Call indirect subroutine 1 2

DO #lit14,Expr Do code through PC + Expr, (lit14 + 1) times 2 2

DO Wn,Expr Do code through PC + Expr, (Wn + 1) times 2 2

GOTO Expr Go to address 2 2

GOTO Wn Go to address indirectly 1 2

RCALL Expr Relative call 1 2

RCALL Wn Computed call 1 2

REPEAT #lit14 Repeat next instruction (lit14 + 1) times 1 1

REPEAT Wn Repeat next instruction (Wn + 1) times 1 1

RETFIE Return from interrupt enable 1 3 (2)

RETLW #lit10,Wn Return with lit10 in Wn 1 3 (2)

RETURN Return from subroutine 1 3 (2)

Note 1: Conditional branch instructions execute in 1 cycle if the branch is not taken, or 2 cycles if the branch is

taken.

2: RETURN normally executes in 3 cycles. However, it executes in 2 cycles if an interrupt is pending.