Microchip Technology MA330016 Data Sheet

© 2007-2011 Microchip Technology Inc.

DS70290J-page 199

Wm*Wm

Multiplicand and Multiplier working register pair for Square instructions 

∈ 

{W4 * W4,W5 * W5,W6 * W6,W7 * W7} 

Wm*Wn

Multiplicand and Multiplier working register pair for DSP instructions 

∈

{W4 * W5,W4 * W6,W4 * W7,W5 * W6,W5 * W7,W6 * W7}

Wn

One of 16 working registers 

∈ {W0..W15}

Wnd

One of 16 destination working registers 

∈ {W0...W15}

Wns

One of 16 source working registers 

∈ {W0...W15}

WREG

W0 (working register used in file register instructions)

Ws

Source W register 

∈ { Ws, [Ws], [Ws++], [Ws--], [++Ws], [--Ws] }

Wso

Source W register 

∈ 

{ Wns, [Wns], [Wns++], [Wns--], [++Wns], [--Wns], [Wns+Wb] } 

Wx

X data space prefetch address register for DSP instructions 
∈ {[W8]+ = 6, [W8]+ = 4, [W8]+ = 2, [W8],  [W8]- = 6, [W8]- = 4, [W8]- = 2,
     [W9]+ = 6, [W9]+ = 4, [W9]+ = 2, [W9],  [W9]- = 6, [W9]- = 4, [W9]- = 2,
     [W9 + W12], none}

Wxd

X data space prefetch destination register for DSP instructions 

∈ {W4...W7}

Wy

Y data space prefetch address register for DSP instructions 
∈ {[W10]+ = 6, [W10]+ = 4, [W10]+ = 2, [W10], [W10]- = 6, [W10]- = 4, [W10]- = 2,
     [W11]+ = 6, [W11]+ = 4, [W11]+ = 2, [W11], [W11]- = 6, [W11]- = 4, [W11]- = 2,
     [W11 + W12], none}

Wyd

Y data space prefetch destination register for DSP instructions 

∈ {W4...W7}