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                else if( rfsh_n_reg[1] && (!rfsh_n_reg[0]) && last_m1_0066 )
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                else if( rfsh_n_reg[1] && (!rfsh_n_reg[0]) && last_m1_0066 )
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                        in_nmi_2 <= 1'b0;
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                        in_nmi_2 <= 1'b0;
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        end
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        end
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        assign drive_00 = in_nmi_2 && (!m1_n) && (!mreq_n) && last_m1_0066;
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        assign drive_00 = in_nmi_2 && (!m1_n) && (!mreq_n) && (a[15:0]==16'h0066); // && last_m1_0066;
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        assign nmi_buf_clr = last_m1_0066 && in_nmi_2;
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        assign nmi_buf_clr = last_m1_0066 && in_nmi_2;
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        always @(posedge fclk, negedge rst_n)
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        always @(posedge fclk, negedge rst_n)
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        if( !rst_n )
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        if( !rst_n )