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Simplified floating-point parameters in config-shared

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David Harris 2024-01-15 17:48:41 -08:00
parent 0235970313
commit bb3a7850c4
1 changed files with 21 additions and 25 deletions
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46
config/shared/config-shared.vh
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@ -65,33 +65,29 @@ localparam H_NF = 32'd10;
localparam H_BIAS = 32'd15; localparam H_BIAS = 32'd15;
localparam H_FMT = 2'd2; localparam H_FMT = 2'd2;
// Floating point length FLEN and number of exponent (NE) and fraction (NF) bits // Floating point length FLEN and number of exponent (NE) and fraction (NF) bits (for longest format supported)
localparam FLEN = (Q_SUPPORTED ? Q_LEN : D_SUPPORTED ? D_LEN : S_LEN); localparam FLEN = Q_SUPPORTED ? Q_LEN : D_SUPPORTED ? D_LEN : S_LEN;
localparam NE = (Q_SUPPORTED ? Q_NE : D_SUPPORTED ? D_NE : S_NE); localparam NE = Q_SUPPORTED ? Q_NE : D_SUPPORTED ? D_NE : S_NE;
localparam NF = (Q_SUPPORTED ? Q_NF : D_SUPPORTED ? D_NF : S_NF); localparam NF = Q_SUPPORTED ? Q_NF : D_SUPPORTED ? D_NF : S_NF;
localparam FMT = (Q_SUPPORTED ? 2'd3 : D_SUPPORTED ? 2'd1 : 2'd0); localparam FMT = Q_SUPPORTED ? 2'd3 : D_SUPPORTED ? 2'd1 : 2'd0;
localparam BIAS = (Q_SUPPORTED ? Q_BIAS : D_SUPPORTED ? D_BIAS : S_BIAS); localparam BIAS = Q_SUPPORTED ? Q_BIAS : D_SUPPORTED ? D_BIAS : S_BIAS;
/* Delete once tested dh 10/10/22
localparam FLEN = (Q_SUPPORTED ? Q_LEN : D_SUPPORTED ? D_LEN : F_SUPPORTED ? S_LEN : H_LEN);
localparam NE = (Q_SUPPORTED ? Q_NE : D_SUPPORTED ? D_NE : F_SUPPORTED ? S_NE : H_NE);
localparam NF = (Q_SUPPORTED ? Q_NF : D_SUPPORTED ? D_NF : F_SUPPORTED ? S_NF : H_NF);
localparam FMT = (Q_SUPPORTED ? 2'd3 : D_SUPPORTED ? 2'd1 : F_SUPPORTED ? 2'd0 : 2'd2);
localparam BIAS = (Q_SUPPORTED ? Q_BIAS : D_SUPPORTED ? D_BIAS : F_SUPPORTED ? S_BIAS : H_BIAS);*/
// Floating point constants needed for FPU paramerterization // Floating point constants needed for FPU paramerterization
localparam FPSIZES = ((32)'(Q_SUPPORTED)+(32)'(D_SUPPORTED)+(32)'(F_SUPPORTED)+(32)'(ZFH_SUPPORTED)); // LEN1/NE1/NF1/FNT1 is the size of the second longest supported format
localparam FMTBITS = ((32)'(FPSIZES>=3)+1); localparam FPSIZES = (32)'(Q_SUPPORTED)+(32)'(D_SUPPORTED)+(32)'(F_SUPPORTED)+(32)'(ZFH_SUPPORTED);
localparam LEN1 = ((D_SUPPORTED & (FLEN != D_LEN)) ? D_LEN : (F_SUPPORTED & (FLEN != S_LEN)) ? S_LEN : H_LEN); localparam FMTBITS = (32)'(FPSIZES>=3)+1;
localparam NE1 = ((D_SUPPORTED & (FLEN != D_LEN)) ? D_NE : (F_SUPPORTED & (FLEN != S_LEN)) ? S_NE : H_NE); localparam LEN1 = (FLEN > D_LEN) ? D_LEN : (FLEN > S_LEN) ? S_LEN : H_LEN;
localparam NF1 = ((D_SUPPORTED & (FLEN != D_LEN)) ? D_NF : (F_SUPPORTED & (FLEN != S_LEN)) ? S_NF : H_NF); localparam NE1 = (FLEN > D_LEN) ? D_NE : (FLEN > S_LEN) ? S_NE : H_NE;
localparam FMT1 = ((D_SUPPORTED & (FLEN != D_LEN)) ? 2'd1 : (F_SUPPORTED & (FLEN != S_LEN)) ? 2'd0 : 2'd2); localparam NF1 = (FLEN > D_LEN) ? D_NF : (FLEN > S_LEN) ? S_NF : H_NF;
localparam BIAS1 = ((D_SUPPORTED & (FLEN != D_LEN)) ? D_BIAS : (F_SUPPORTED & (FLEN != S_LEN)) ? S_BIAS : H_BIAS); localparam FMT1 = (FLEN > D_LEN) ? 2'd1 : (FLEN > S_LEN) ? 2'd0 : 2'd2;
localparam LEN2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? S_LEN : H_LEN); localparam BIAS1 = (FLEN > D_LEN) ? D_BIAS : (FLEN > S_LEN) ? S_BIAS : H_BIAS;
localparam NE2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? S_NE : H_NE);
localparam NF2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? S_NF : H_NF); // LEN2 etc is the size of the third longest supported format
localparam FMT2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? 2'd0 : 2'd2); localparam LEN2 = (LEN1 > S_LEN) ? S_LEN : H_LEN;
localparam BIAS2 = ((F_SUPPORTED & (LEN1 != S_LEN)) ? S_BIAS : H_BIAS); localparam NE2 = (LEN1 > S_LEN) ? S_NE : H_NE;
localparam NF2 = (LEN1 > S_LEN) ? S_NF : H_NF;
localparam FMT2 = (LEN1 > S_LEN) ? 2'd0 : 2'd2;
localparam BIAS2 = (LEN1 > S_LEN) ? S_BIAS : H_BIAS;
// divider r and rk (bits per digit, bits per cycle) // divider r and rk (bits per digit, bits per cycle)
localparam LOGR = $clog2(RADIX); // r = log(R) bits per digit localparam LOGR = $clog2(RADIX); // r = log(R) bits per digit