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Partial divider cleanup 3

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David Harris 2021-10-02 21:00:13 -04:00
parent 775520c05a
commit 67690c2ed7
1 changed files with 5 additions and 5 deletions
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10
wally-pipelined/src/muldiv/intdivrestoring.sv
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@ -36,7 +36,7 @@ module intdivrestoring (
output logic [`XLEN-1:0] QuotM, RemM
);
logic [`XLEN-1:0] W, W2, Win, Wshift, Wprime, Wn, Wnn, Wnext, XQ, XQin, XQshift, XQn, XQnn, XQnext, DSavedE, Din, Dabs, D2, Dn, Xn, Xabs, X2, XSavedE, Xinit, DAbsB, W1, XQ1;
logic [`XLEN-1:0] W, W2, Win, Wshift, Wprime, Wn, Wnn, Wnext, XQ, XQin, XQshift, XQn, XQnn, XQnext, DSavedE, Din, Dabs, D2, DnE, XnE, Xabs, X2, XSavedE, Xinit, DAbsB, W1, XQ1;
logic qi, qib; // curent quotient bit
localparam STEPBITS = $clog2(`XLEN)-1;
logic [STEPBITS:0] step;
@ -56,10 +56,10 @@ module intdivrestoring (
assign div0 = (DSavedE == 0); // *** eventually replace with just the negedge saved D
// Take absolute value for signed operations
neg #(`XLEN) negd(DSavedE, Dn);
mux2 #(`XLEN) dabsmux(DSavedE, Dn, SignedDivideE & SignD, Din); // take absolute value for signed operations
neg #(`XLEN) negx(XSavedE, Xn);
mux2 #(`XLEN) xabsmux(XSavedE, Xn, SignedDivideE & SignX, Xinit); // need original X as remainder if doing divide by 0
neg #(`XLEN) negd(DSavedE, DnE);
mux2 #(`XLEN) dabsmux(DSavedE, DnE, SignedDivideE & SignD, Din); // take absolute value for signed operations
neg #(`XLEN) negx(XSavedE, XnE);
mux2 #(`XLEN) xabsmux(XSavedE, XnE, SignedDivideE & SignX, Xinit); // need original X as remainder if doing divide by 0
// Negate D for subtraction
assign DAbsB = ~Din;