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[/] [ft816float/] [trunk/] [rtl/] [verilog/] [fpSize.sv] - Blame information for rev 85

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Line No. Rev Author Line
1 26 robfinch
// This file contains defintions for fields to ease dealing with different fp
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// widths. Some of the code still needs to be modified to support widths
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// other than standard 32,64 or 80 bit.
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localparam MSB = WID-1;
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localparam EMSB = WID==128 ? 14 :
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          WID==96 ? 14 :
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          WID==84 ? 14 :
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          WID==80 ? 14 :
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          WID==64 ? 10 :
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                                  WID==52 ? 10 :
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                                  WID==48 ? 10 :
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                                  WID==44 ? 10 :
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                                  WID==42 ? 10 :
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                                  WID==40 ?  9 :
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                                  WID==32 ?  7 :
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                                  WID==24 ?  6 : 4;
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localparam FMSB = WID==128 ? 111 :
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          WID==96 ? 79 :
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          WID==84 ? 67 :
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          WID==80 ? 63 :
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          WID==64 ? 51 :
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                                  WID==52 ? 39 :
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                                  WID==48 ? 35 :
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                                  WID==44 ? 31 :
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                                  WID==42 ? 29 :
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                                  WID==40 ? 28 :
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                                  WID==32 ? 22 :
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                                  WID==24 ? 15 : 9;
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localparam FX = (FMSB+2)*2;     // the MSB of the expanded fraction
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localparam EX = FX + 1 + EMSB + 1 + 1 - 1;

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