bl_enc.v 3.76 KB
// Module instances modified by /home/rws/workarea/rf/sw/bbplayer/tools/necprimfix 
//
//    6 instances of an02d1h changed to j_an02.
//    6 instances of fn05d2 changed to j_fn05.
//    1 instance of in01d2 changed to j_in01.
//    11 instances of mx81d1h changed to j_mx81.
//    3 instances of or04d2 changed to j_or04.
//

////////////////////////////////////////////////////////////////////////
//
// Project Reality
//
// module:	bl_enc
// description:	Floating point encode for blend unit.
//
// designer:	Phil Gossett
// date:	8/14/94
//
////////////////////////////////////////////////////////////////////////

module bl_enc (i, z);

input [17:0] i;

output [13:0] z;

wire [6:0] qc;
wire [7:0] qz;

assign qc[6] = i[17];
j_an02 and5 (.a1(qc[6]), .a2(i[16]), .z(qc[5]));
j_an02 and4 (.a1(qc[5]), .a2(i[15]), .z(qc[4]));
j_an02 and3 (.a1(qc[4]), .a2(i[14]), .z(qc[3]));
j_an02 and2 (.a1(qc[3]), .a2(i[13]), .z(qc[2]));
j_an02 and1 (.a1(qc[2]), .a2(i[12]), .z(qc[1]));
j_an02 and0 (.a1(qc[1]), .a2(i[11]), .z(qc[0]));

j_in01  qua7 ( .i(qc[6]),             .zn(qz[7]));
j_fn05  qua6 (.a1(qc[6]), .b1(qc[5]), .zn(qz[6]));
j_fn05  qua5 (.a1(qc[5]), .b1(qc[4]), .zn(qz[5]));
j_fn05  qua4 (.a1(qc[4]), .b1(qc[3]), .zn(qz[4]));
j_fn05  qua3 (.a1(qc[3]), .b1(qc[2]), .zn(qz[3]));
j_fn05  qua2 (.a1(qc[2]), .b1(qc[1]), .zn(qz[2]));
j_fn05  qua1 (.a1(qc[1]), .b1(qc[0]), .zn(qz[1]));
assign qz[0] = qc[0];

j_or04  or0 (.a1(qz[0]), .a2(qz[2]), .a3(qz[4]), .a4(qz[6]), .z(z[11]));
j_or04  or1 (.a1(qz[0]), .a2(qz[1]), .a3(qz[4]), .a4(qz[5]), .z(z[12]));
j_or04  or2 (.a1(qz[0]), .a2(qz[1]), .a3(qz[2]), .a4(qz[3]), .z(z[13]));

j_mx81 mx00 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[ 6]), .i1(i[ 5]), .i2(i[ 4]), .i3(i[ 3]),
              .i4(i[ 2]), .i5(i[ 1]), .i6(i[ 0]), .i7(i[ 0]),
               .z(z[ 0]));
j_mx81 mx01 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[ 7]), .i1(i[ 6]), .i2(i[ 5]), .i3(i[ 4]),
              .i4(i[ 3]), .i5(i[ 2]), .i6(i[ 1]), .i7(i[ 1]),
               .z(z[ 1]));
j_mx81 mx02 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[ 8]), .i1(i[ 7]), .i2(i[ 6]), .i3(i[ 5]),
              .i4(i[ 4]), .i5(i[ 3]), .i6(i[ 2]), .i7(i[ 2]),
               .z(z[ 2]));
j_mx81 mx03 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[ 9]), .i1(i[ 8]), .i2(i[ 7]), .i3(i[ 6]),
              .i4(i[ 5]), .i5(i[ 4]), .i6(i[ 3]), .i7(i[ 3]),
               .z(z[ 3]));
j_mx81 mx04 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[10]), .i1(i[ 9]), .i2(i[ 8]), .i3(i[ 7]),
              .i4(i[ 6]), .i5(i[ 5]), .i6(i[ 4]), .i7(i[ 4]),
               .z(z[ 4]));
j_mx81 mx05 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[11]), .i1(i[10]), .i2(i[ 9]), .i3(i[ 8]),
              .i4(i[ 7]), .i5(i[ 6]), .i6(i[ 5]), .i7(i[ 5]),
               .z(z[ 5]));
j_mx81 mx06 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[12]), .i1(i[11]), .i2(i[10]), .i3(i[ 9]),
              .i4(i[ 8]), .i5(i[ 7]), .i6(i[ 6]), .i7(i[ 6]),
               .z(z[ 6]));
j_mx81 mx07 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[13]), .i1(i[12]), .i2(i[11]), .i3(i[10]),
              .i4(i[ 9]), .i5(i[ 8]), .i6(i[ 7]), .i7(i[ 7]),
               .z(z[ 7]));
j_mx81 mx08 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[14]), .i1(i[13]), .i2(i[12]), .i3(i[11]),
              .i4(i[10]), .i5(i[ 9]), .i6(i[ 8]), .i7(i[ 8]),
               .z(z[ 8]));
j_mx81 mx09 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[15]), .i1(i[14]), .i2(i[13]), .i3(i[12]),
              .i4(i[11]), .i5(i[10]), .i6(i[ 9]), .i7(i[ 9]),
               .z(z[ 9]));
j_mx81 mx10 (.s0(z[11]), .s1(z[12]), .s2(z[13]),
              .i0(i[16]), .i1(i[15]), .i2(i[14]), .i3(i[13]),
              .i4(i[12]), .i5(i[11]), .i6(i[10]), .i7(i[10]),
               .z(z[10]));

endmodule // bl_enc