Datasheet

 2011-2013 Microchip Technology Inc. DS70657G-page 387
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X AND PIC24EPXXXGP/MC20X
Wm,Wn Dividend, Divisor working register pair (direct addressing)
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}
TABLE 28-1: SYMBOLS USED IN OPCODE DESCRIPTIONS (CONTINUED)
Field Description