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removed an adder out of early termination

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This commit is contained in:
Katherine Parry 2022-06-28 18:01:11 +00:00
parent cbf1a59d1b
commit 478a2e2a4b
2 changed files with 5 additions and 4 deletions
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2
addins/riscv-arch-test

@ -1 +1 @@
Subproject commit 307c77b26e070ae85ffea665ad9b642b40e33c86
Subproject commit be67c99bd461742aa1c100bcc0732657faae2230

7
pipelined/srt/srt-radix4.sv
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@ -143,12 +143,13 @@ module earlytermination(
logic [$clog2(`DIVLEN/2+3)-1:0] Count;
logic WZero;
logic [`DIVLEN+3:0] W;
assign WZero = (WS+WC == 0)|XZeroE|YZeroE|XInfE|YInfE|XNaNE|YNaNE; //*** temporary
// *** rather than Counting should just be able to check if one of the two msbs of the quotent is 1 then stop???
assign WZero = ((WS^WC)=={WS[`DIVLEN+2:0]|WC[`DIVLEN+2:0], 1'b0})|XZeroE|YZeroE|XInfE|YInfE|XNaNE|YNaNE;
assign DivDone = (DivStickyE | WZero);
assign DivStickyE = ~|Count;
assign DivNegStickyE = $signed(WS+WC) < 0;
assign W = WC+WS;
assign DivNegStickyE = W[`DIVLEN+3]; //*** is there a better way to do this???
assign EarlyTermShiftDiv2E = Count;
// +1 for setup
// `DIVLEN/2 to get required number of bits