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[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_fpu_post_norm_div.v] - Diff between revs 258 and 364

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Rev 258 Rev 364
Line 148... Line 148...
 
 
   wire [9:0] v_shr;
   wire [9:0] v_shr;
   wire [9:0] v_shl;
   wire [9:0] v_shl;
 
 
   assign v_shr = (s_exp_10b[9] | !(|s_exp_10b)) ?
   assign v_shr = (s_exp_10b[9] | !(|s_exp_10b)) ?
                   (10'd1 - s_exp_10b) - s_qutdn : 0;
                   (10'd1 - s_exp_10b) - {9'd0,s_qutdn} : 0;
 
 
   assign v_shl = (s_exp_10b[9] | !(|s_exp_10b)) ?
   assign v_shl = (s_exp_10b[9] | !(|s_exp_10b)) ?
                   0 :
                   0 :
                   s_exp_10b[8] ?
                   s_exp_10b[8] ?
                   0 : {9'd0,s_qutdn};
                   0 : {9'd0,s_qutdn};
Line 181... Line 181...
 
 
   assign s_expo2 = s_fraco1[26] ? s_expo1 : s_expo1 - 9'd1;
   assign s_expo2 = s_fraco1[26] ? s_expo1 : s_expo1 - 9'd1;
 
 
   //s_r_zeros <= count_r_zeros(s_qutnt_i);
   //s_r_zeros <= count_r_zeros(s_qutnt_i);
   always @(s_qutnt_i)
   always @(s_qutnt_i)
     casex(s_qutnt_i) // synopsys full_case parallel_case
     casez(s_qutnt_i) // synopsys full_case parallel_case
       27'b??????????????????????????1: s_r_zeros <=  0;
       27'b??????????????????????????1: s_r_zeros = 0;
       27'b?????????????????????????10: s_r_zeros <=  1;
       27'b?????????????????????????10: s_r_zeros = 1;
       27'b????????????????????????100: s_r_zeros <=  2;
       27'b????????????????????????100: s_r_zeros = 2;
       27'b???????????????????????1000: s_r_zeros <=  3;
       27'b???????????????????????1000: s_r_zeros = 3;
       27'b??????????????????????10000: s_r_zeros <=  4;
       27'b??????????????????????10000: s_r_zeros = 4;
       27'b?????????????????????100000: s_r_zeros <=  5;
       27'b?????????????????????100000: s_r_zeros = 5;
       27'b????????????????????1000000: s_r_zeros <=  6;
       27'b????????????????????1000000: s_r_zeros = 6;
       27'b???????????????????10000000: s_r_zeros <=  7;
       27'b???????????????????10000000: s_r_zeros = 7;
       27'b??????????????????100000000: s_r_zeros <=  8;
       27'b??????????????????100000000: s_r_zeros = 8;
       27'b?????????????????1000000000: s_r_zeros <=  9;
       27'b?????????????????1000000000: s_r_zeros = 9;
       27'b????????????????10000000000: s_r_zeros <=  10;
       27'b????????????????10000000000: s_r_zeros = 10;
       27'b???????????????100000000000: s_r_zeros <=  11;
       27'b???????????????100000000000: s_r_zeros = 11;
       27'b??????????????1000000000000: s_r_zeros <=  12;
       27'b??????????????1000000000000: s_r_zeros = 12;
       27'b?????????????10000000000000: s_r_zeros <=  13;
       27'b?????????????10000000000000: s_r_zeros = 13;
       27'b????????????100000000000000: s_r_zeros <=  14;
       27'b????????????100000000000000: s_r_zeros = 14;
       27'b???????????1000000000000000: s_r_zeros <=  15;
       27'b???????????1000000000000000: s_r_zeros = 15;
       27'b??????????10000000000000000: s_r_zeros <=  16;
       27'b??????????10000000000000000: s_r_zeros = 16;
       27'b?????????100000000000000000: s_r_zeros <=  17;
       27'b?????????100000000000000000: s_r_zeros = 17;
       27'b????????1000000000000000000: s_r_zeros <=  18;
       27'b????????1000000000000000000: s_r_zeros = 18;
       27'b???????10000000000000000000: s_r_zeros <=  19;
       27'b???????10000000000000000000: s_r_zeros = 19;
       27'b??????100000000000000000000: s_r_zeros <=  20;
       27'b??????100000000000000000000: s_r_zeros = 20;
       27'b?????1000000000000000000000: s_r_zeros <=  21;
       27'b?????1000000000000000000000: s_r_zeros = 21;
       27'b????10000000000000000000000: s_r_zeros <=  22;
       27'b????10000000000000000000000: s_r_zeros = 22;
       27'b???100000000000000000000000: s_r_zeros <=  23;
       27'b???100000000000000000000000: s_r_zeros = 23;
       27'b??1000000000000000000000000: s_r_zeros <=  24;
       27'b??1000000000000000000000000: s_r_zeros = 24;
       27'b?10000000000000000000000000: s_r_zeros <=  25;
       27'b?10000000000000000000000000: s_r_zeros = 25;
       27'b100000000000000000000000000: s_r_zeros <=  26;
       27'b100000000000000000000000000: s_r_zeros = 26;
       27'b000000000000000000000000000: s_r_zeros <=  27;
       27'b000000000000000000000000000: s_r_zeros = 27;
     endcase // casex (s_qutnt_i)
     endcase // casex (s_qutnt_i)
 
 
   assign s_lost = (s_shr1+{5'd0,s_shr2}) > s_r_zeros;
   assign s_lost = (s_shr1+{5'd0,s_shr2}) > s_r_zeros;
 
 
   // ***Stage 3***
   // ***Stage 3***

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