33FJ128MC708 datasheet(40/90 Pages) MICROCHIP

40 / 90 page

dsPIC33F

DS70155C-page 38

Preliminary

TABLE 9-8:

COMPARE/SKIP INSTRUCTIONS

Assembly Syntax

Description

Words

Cycles

BTSC

f,#bit4

Bit test f, skip if clear

1 (2 or 3)

BTSC

Ws,#bit4

Bit test Ws, skip if clear

1 (2 or 3)

BTSS

f,#bit4

Bit test f, skip if set

1 (2 or 3)

BTSS

Ws,#bit4

Bit test Ws, skip if set

1 (2 or 3)

Compare (f – WREG)

Wb,#lit5

Compare (Wb – lit5)

Wb,Ws

Compare (Wb – Ws)

CP0

Compare (f – 0x0000)

CP0

Compare (Ws – 0x0000)

CPB

Compare with Borrow (f – WREG – C)1

CPB

Wb,#lit5

Compare with Borrow (Wb – lit5 – C)1

CPB

Wb,Ws

Compare with Borrow (Wb – Ws – C)1

CPSEQ

Wb,Wn

Compare Wb with Wn, Skip if Equal (Wb = Wn)

1 (2 or 3)

CPSGT

Wb,Wn

Signed Compare Wb with Wn, Skip if Greater Than (Wb > Wn)

1 (2 or 3)

CPSLT

Wb,Wn

Signed Compare Wb with Wn, Skip if Less Than (Wb < Wn)

1 (2 or 3)

CPSNE

Wb,Wn

Signed Compare Wb with Wn, Skip if Not Equal (Wb

≠ Wn)

1 (2 or 3)

Note 1:

Bit positions are specified by bit4 (0:15) for word operations.

Conditional skip instructions execute in 1 cycle if the skip is not taken, 2 cycles if the skip is taken over a

one-word instruction and 3 cycles if the skip is taken over a two-word instruction.

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