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[/] [s6soc/] [trunk/] [rtl/] [cpu/] [cpuops.v] - Diff between revs 7 and 16
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| Rev 7 |
Rev 16 |
| Line 238... |
Line 238... |
// = 2^32(ah*bh)
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// = 2^32(ah*bh)
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// +2^16 (ah*bl+al*bh)
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// +2^16 (ah*bl+al*bh)
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// +(al*bl)
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// +(al*bl)
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// - 2^31 (2^16 bh+bl + 2^16 ah+al + 2^31)
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// - 2^31 (2^16 bh+bl + 2^16 ah+al + 2^31)
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//
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//
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reg [31:0] pp_f, pp_l; // pp_o, pp_i, pp_l;
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reg [31:0] pp_f, pp_l; // F and L from FOIL
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reg [32:0] pp_oi;
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reg [32:0] pp_oi; // The O and I from FOIL
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reg [32:0] pp_s;
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reg [32:0] pp_s;
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always @(posedge i_clk)
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always @(posedge i_clk)
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begin
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begin
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pp_f<=r_mpy_a_input[31:16]*r_mpy_b_input[31:16];
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pp_f<=r_mpy_a_input[31:16]*r_mpy_b_input[31:16];
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pp_oi<=r_mpy_a_input[31:16]*r_mpy_b_input[15: 0]
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pp_oi<=r_mpy_a_input[31:16]*r_mpy_b_input[15: 0]
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