strgbaoffseti.v
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/**************************************************************************
* *
* Copyright (C) 1994, Silicon Graphics, Inc. *
* *
* These coded instructions, statements, and computer programs contain *
* unpublished proprietary information of Silicon Graphics, Inc., and *
* are protected by Federal copyright law. They may not be disclosed *
* to third parties or copied or duplicated in any form, in whole or *
* in part, without the prior written consent of Silicon Graphics, Inc. *
* *
*************************************************************************/
// $Id: strgbaoffseti.v,v 1.1 2002/03/28 00:26:13 berndt Exp $
/* Project Reality
MDP
Created by Mike M. Cai 5/24/94
*/
module strgbaoffseti( att_data_out,
att_data_in, dx, x_offset,
dy, y_offset);
output [8:0] att_data_out; // 9 bits integer
input [10:0] att_data_in; // 10 bits integer, 2 bits fraction
input [12:0] dx, dy; // 10 bits integer, bits fraction
input [1:0] x_offset, y_offset; // 2 bits of fractions
wire [12:0] x_prod0, x_prod1, y_prod0, y_prod1;
wire [12:0] add_prod1_s, add_prod1_co;
wire [12:0] add_prod2_s, add_prod2_co;
wire [12:0] add_prod3_s, add_prod3_co;
wire [12:0] sum0, sum0_co, sum1, sum1_co;
wire [12:0] sum; // 10 bits integer, 4 bits fraction
wire [8:0] att_data_out;
an02d1 // dx partial product one
x_prod0_0(.z(x_prod0[0]), .a1(dx[0]), .a2(x_offset[0])),
x_prod0_1(.z(x_prod0[1]), .a1(dx[1]), .a2(x_offset[0])),
x_prod0_2(.z(x_prod0[2]), .a1(dx[2]), .a2(x_offset[0])),
x_prod0_3(.z(x_prod0[3]), .a1(dx[3]), .a2(x_offset[0])),
x_prod0_4(.z(x_prod0[4]), .a1(dx[4]), .a2(x_offset[0])),
x_prod0_5(.z(x_prod0[5]), .a1(dx[5]), .a2(x_offset[0])),
x_prod0_6(.z(x_prod0[6]), .a1(dx[6]), .a2(x_offset[0])),
x_prod0_7(.z(x_prod0[7]), .a1(dx[7]), .a2(x_offset[0])),
x_prod0_8(.z(x_prod0[8]), .a1(dx[8]), .a2(x_offset[0])),
x_prod0_9(.z(x_prod0[9]), .a1(dx[9]), .a2(x_offset[0])),
x_prod0_10(.z(x_prod0[10]), .a1(dx[10]), .a2(x_offset[0])),
x_prod0_11(.z(x_prod0[11]), .a1(dx[11]), .a2(x_offset[0])),
x_prod0_12(.z(x_prod0[12]), .a1(dx[12]), .a2(x_offset[0])),
// dx partial product two
x_prod1_1(.z(x_prod1[1]), .a1(dx[0]), .a2(x_offset[1])),
x_prod1_2(.z(x_prod1[2]), .a1(dx[1]), .a2(x_offset[1])),
x_prod1_3(.z(x_prod1[3]), .a1(dx[2]), .a2(x_offset[1])),
x_prod1_4(.z(x_prod1[4]), .a1(dx[3]), .a2(x_offset[1])),
x_prod1_5(.z(x_prod1[5]), .a1(dx[4]), .a2(x_offset[1])),
x_prod1_6(.z(x_prod1[6]), .a1(dx[5]), .a2(x_offset[1])),
x_prod1_7(.z(x_prod1[7]), .a1(dx[6]), .a2(x_offset[1])),
x_prod1_8(.z(x_prod1[8]), .a1(dx[7]), .a2(x_offset[1])),
x_prod1_9(.z(x_prod1[9]), .a1(dx[8]), .a2(x_offset[1])),
x_prod1_10(.z(x_prod1[10]), .a1(dx[9]), .a2(x_offset[1])),
x_prod1_11(.z(x_prod1[11]), .a1(dx[10]), .a2(x_offset[1])),
x_prod1_12(.z(x_prod1[12]), .a1(dx[11]), .a2(x_offset[1])),
// dy partial product
y_prod0_0(.z(y_prod0[0]), .a1(dy[0]), .a2(y_offset[0])),
y_prod0_1(.z(y_prod0[1]), .a1(dy[1]), .a2(y_offset[0])),
y_prod0_2(.z(y_prod0[2]), .a1(dy[2]), .a2(y_offset[0])),
y_prod0_3(.z(y_prod0[3]), .a1(dy[3]), .a2(y_offset[0])),
y_prod0_4(.z(y_prod0[4]), .a1(dy[4]), .a2(y_offset[0])),
y_prod0_5(.z(y_prod0[5]), .a1(dy[5]), .a2(y_offset[0])),
y_prod0_6(.z(y_prod0[6]), .a1(dy[6]), .a2(y_offset[0])),
y_prod0_7(.z(y_prod0[7]), .a1(dy[7]), .a2(y_offset[0])),
y_prod0_8(.z(y_prod0[8]), .a1(dy[8]), .a2(y_offset[0])),
y_prod0_9(.z(y_prod0[9]), .a1(dy[9]), .a2(y_offset[0])),
y_prod0_10(.z(y_prod0[10]), .a1(dy[10]), .a2(y_offset[0])),
y_prod0_11(.z(y_prod0[11]), .a1(dy[11]), .a2(y_offset[0])),
y_prod0_12(.z(y_prod0[12]), .a1(dy[12]), .a2(y_offset[0])),
// dy partial product two
y_prod1_1(.z(y_prod1[1]), .a1(dy[0]), .a2(y_offset[1])),
y_prod1_2(.z(y_prod1[2]), .a1(dy[1]), .a2(y_offset[1])),
y_prod1_3(.z(y_prod1[3]), .a1(dy[2]), .a2(y_offset[1])),
y_prod1_4(.z(y_prod1[4]), .a1(dy[3]), .a2(y_offset[1])),
y_prod1_5(.z(y_prod1[5]), .a1(dy[4]), .a2(y_offset[1])),
y_prod1_6(.z(y_prod1[6]), .a1(dy[5]), .a2(y_offset[1])),
y_prod1_7(.z(y_prod1[7]), .a1(dy[6]), .a2(y_offset[1])),
y_prod1_8(.z(y_prod1[8]), .a1(dy[7]), .a2(y_offset[1])),
y_prod1_9(.z(y_prod1[9]), .a1(dy[8]), .a2(y_offset[1])),
y_prod1_10(.z(y_prod1[10]), .a1(dy[9]), .a2(y_offset[1])),
y_prod1_11(.z(y_prod1[11]), .a1(dy[10]), .a2(y_offset[1])),
y_prod1_12(.z(y_prod1[12]), .a1(dy[11]), .a2(y_offset[1]));
ad01d1
// first stage adders
add_prod1_0(.s(add_prod1_s[0]), .co(add_prod1_co[1]),
.a(x_prod0[0]), .b(1'h0), .ci(y_prod0[0])),
add_prod1_1(.s(add_prod1_s[1]), .co(add_prod1_co[2]),
.a(x_prod0[1]), .b(x_prod1[1]), .ci(y_prod0[1])),
add_prod1_2(.s(add_prod1_s[2]), .co(add_prod1_co[3]),
.a(x_prod0[2]), .b(x_prod1[2]), .ci(y_prod0[2])),
add_prod1_3(.s(add_prod1_s[3]), .co(add_prod1_co[4]),
.a(x_prod0[3]), .b(x_prod1[3]), .ci(y_prod0[3])),
add_prod1_4(.s(add_prod1_s[4]), .co(add_prod1_co[5]),
.a(x_prod0[4]), .b(x_prod1[4]), .ci(y_prod0[4])),
add_prod1_5(.s(add_prod1_s[5]), .co(add_prod1_co[6]),
.a(x_prod0[5]), .b(x_prod1[5]), .ci(y_prod0[5])),
add_prod1_6(.s(add_prod1_s[6]), .co(add_prod1_co[7]),
.a(x_prod0[6]), .b(x_prod1[6]), .ci(y_prod0[6])),
add_prod1_7(.s(add_prod1_s[7]), .co(add_prod1_co[8]),
.a(x_prod0[7]), .b(x_prod1[7]), .ci(y_prod0[7])),
add_prod1_8(.s(add_prod1_s[8]), .co(add_prod1_co[9]),
.a(x_prod0[8]), .b(x_prod1[8]), .ci(y_prod0[8])),
add_prod1_9(.s(add_prod1_s[9]), .co(add_prod1_co[10]),
.a(x_prod0[9]), .b(x_prod1[9]), .ci(y_prod0[9])),
add_prod1_10(.s(add_prod1_s[10]), .co(add_prod1_co[11]),
.a(x_prod0[10]), .b(x_prod1[10]), .ci(y_prod0[10])),
add_prod1_11(.s(add_prod1_s[11]), .co(add_prod1_co[12]),
.a(x_prod0[11]), .b(x_prod1[11]), .ci(y_prod0[11])),
add_prod1_12(.s(add_prod1_s[12]),/* .co(add_prod1_co[13]),*/
.a(x_prod0[12]), .b(x_prod1[12]), .ci(y_prod0[12])),
// second stage adder
// add_prod2_0(.s(add_prod2_s[0]), .co(add_prod2_co[1]),
// .a(att_data_in[-2], .b(y_prod1[0]), .ci(add_prod1_co[0])),
add_prod2_1(.s(add_prod2_s[1]), .co(add_prod2_co[2]),
.a(1'h0), .b(y_prod1[1]), .ci(add_prod1_co[1])),
add_prod2_2(.s(add_prod2_s[2]), .co(add_prod2_co[3]),
.a(att_data_in[0]), .b(y_prod1[2]), .ci(add_prod1_co[2])),
add_prod2_3(.s(add_prod2_s[3]), .co(add_prod2_co[4]),
.a(att_data_in[1]), .b(y_prod1[3]), .ci(add_prod1_co[3])),
add_prod2_4(.s(add_prod2_s[4]), .co(add_prod2_co[5]),
.a(att_data_in[2]), .b(y_prod1[4]), .ci(add_prod1_co[4])),
add_prod2_5(.s(add_prod2_s[5]), .co(add_prod2_co[6]),
.a(att_data_in[3]), .b(y_prod1[5]), .ci(add_prod1_co[5])),
add_prod2_6(.s(add_prod2_s[6]), .co(add_prod2_co[7]),
.a(att_data_in[4]), .b(y_prod1[6]), .ci(add_prod1_co[6])),
add_prod2_7(.s(add_prod2_s[7]), .co(add_prod2_co[8]),
.a(att_data_in[5]), .b(y_prod1[7]), .ci(add_prod1_co[7])),
add_prod2_8(.s(add_prod2_s[8]), .co(add_prod2_co[9]),
.a(att_data_in[6]), .b(y_prod1[8]), .ci(add_prod1_co[8])),
add_prod2_9(.s(add_prod2_s[9]), .co(add_prod2_co[10]),
.a(att_data_in[7]), .b(y_prod1[9]), .ci(add_prod1_co[9])),
add_prod2_10(.s(add_prod2_s[10]), .co(add_prod2_co[11]),
.a(att_data_in[8]), .b(y_prod1[10]), .ci(add_prod1_co[10])),
add_prod2_11(.s(add_prod2_s[11]), .co(add_prod2_co[12]),
.a(att_data_in[9]), .b(y_prod1[11]), .ci(add_prod1_co[11])),
add_prod2_12(.s(add_prod2_s[12]), // .co(add_prod2_co[13]),
.a(att_data_in[10]), .b(y_prod1[12]), .ci(add_prod1_co[12]));
// third stage adder
// add_prod3_0(.s(add_prod3_s[0]), .co(add_prod3_co[1]),
// .a(add_prod2_co[0]), .b(add_prod1_s[0]), .ci(add_prod2_s[0])),
assign add_prod3_s[0] = add_prod1_s[0];
assign add_prod3_co[1] = 1'h0;
ad01d1
add_prod3_1(.s(add_prod3_s[1]), .co(add_prod3_co[2]),
.a(1'h0), .b(add_prod1_s[1]), .ci(add_prod2_s[1])),
add_prod3_2(.s(add_prod3_s[2]), .co(add_prod3_co[3]),
.a(add_prod2_co[2]), .b(add_prod1_s[2]), .ci(add_prod2_s[2])),
add_prod3_3(.s(add_prod3_s[3]), .co(add_prod3_co[4]),
.a(add_prod2_co[3]), .b(add_prod1_s[3]), .ci(add_prod2_s[3])),
add_prod3_4(.s(add_prod3_s[4]), .co(add_prod3_co[5]),
.a(add_prod2_co[4]), .b(add_prod1_s[4]), .ci(add_prod2_s[4])),
add_prod3_5(.s(add_prod3_s[5]), .co(add_prod3_co[6]),
.a(add_prod2_co[5]), .b(add_prod1_s[5]), .ci(add_prod2_s[5])),
add_prod3_6(.s(add_prod3_s[6]), .co(add_prod3_co[7]),
.a(add_prod2_co[6]), .b(add_prod1_s[6]), .ci(add_prod2_s[6])),
add_prod3_7(.s(add_prod3_s[7]), .co(add_prod3_co[8]),
.a(add_prod2_co[7]), .b(add_prod1_s[7]), .ci(add_prod2_s[7])),
add_prod3_8(.s(add_prod3_s[8]), .co(add_prod3_co[9]),
.a(add_prod2_co[8]), .b(add_prod1_s[8]), .ci(add_prod2_s[8])),
add_prod3_9(.s(add_prod3_s[9]), .co(add_prod3_co[10]),
.a(add_prod2_co[9]), .b(add_prod1_s[9]), .ci(add_prod2_s[9])),
add_prod3_10(.s(add_prod3_s[10]), .co(add_prod3_co[11]),
.a(add_prod2_co[10]), .b(add_prod1_s[10]), .ci(add_prod2_s[10])),
add_prod3_11(.s(add_prod3_s[11]), .co(add_prod3_co[12]),
.a(add_prod2_co[11]), .b(add_prod1_s[11]), .ci(add_prod2_s[11])),
add_prod3_12(.s(add_prod3_s[12]), //.co(add_prod3_co[13]),
.a(add_prod2_co[12]), .b(add_prod1_s[12]), .ci(add_prod2_s[12]));
// Carry select adder
assign sum[0] = add_prod3_s[0];
assign sum[1] = add_prod3_s[1];
ad01d1
sum2(.s(sum[2]), .co(sum0_co[3]),
.a(add_prod3_s[2]), .b(add_prod3_co[2]), .ci(1'h0)),
sum3(.s(sum[3]), .co(sum0_co[4]),
.a(add_prod3_s[3]), .b(add_prod3_co[3]), .ci(sum0_co[3])),
sum4(.s(sum[4]), .co(sum0_co[5]),
.a(add_prod3_s[4]), .b(add_prod3_co[4]), .ci(sum0_co[4])),
sum5(.s(sum[5]), .co(sum0_co[6]),
.a(add_prod3_s[5]), .b(add_prod3_co[5]), .ci(sum0_co[5])),
sum6(.s(sum[6]), .co(sum0_co[7]),
.a(add_prod3_s[6]), .b(add_prod3_co[6]), .ci(sum0_co[6]));
ni01d3
carry_sel(.z(sel_carry), .i(sum0_co[7]));
ad01d1
sum7_0(.s(sum0[7]), .co(sum0_co[8]),
.a(add_prod3_s[7]), .b(add_prod3_co[7]), .ci(1'h0)),
sum7_1(.s(sum1[7]), .co(sum1_co[8]),
.a(add_prod3_s[7]), .b(add_prod3_co[7]), .ci(1'h1)),
sum8_0(.s(sum0[8]), .co(sum0_co[9]),
.a(add_prod3_s[8]), .b(add_prod3_co[8]), .ci(sum0_co[8])),
sum8_1(.s(sum1[8]), .co(sum1_co[9]),
.a(add_prod3_s[8]), .b(add_prod3_co[8]), .ci(sum1_co[8])),
sum9_0(.s(sum0[9]), .co(sum0_co[10]),
.a(add_prod3_s[9]), .b(add_prod3_co[9]), .ci(sum0_co[9])),
sum9_1(.s(sum1[9]), .co(sum1_co[10]),
.a(add_prod3_s[9]), .b(add_prod3_co[9]), .ci(sum1_co[9])),
sum10_0(.s(sum0[10]), .co(sum0_co[11]),
.a(add_prod3_s[10]), .b(add_prod3_co[10]), .ci(sum0_co[10])),
sum10_1(.s(sum1[10]), .co(sum1_co[11]),
.a(add_prod3_s[10]), .b(add_prod3_co[10]), .ci(sum1_co[10])),
sum11_0(.s(sum0[11]), .co(sum0_co[12]),
.a(add_prod3_s[11]), .b(add_prod3_co[11]), .ci(sum0_co[11])),
sum11_1(.s(sum1[11]), .co(sum1_co[12]),
.a(add_prod3_s[11]), .b(add_prod3_co[11]), .ci(sum1_co[11])),
sum12_0(.s(sum0[12]), //.co(sum0_co[9]),
.a(add_prod3_s[12]), .b(add_prod3_co[12]), .ci(sum0_co[12])),
sum12_1(.s(sum1[12]), //.co(sum1_co[9]),
.a(add_prod3_s[12]), .b(add_prod3_co[12]), .ci(sum1_co[12]));
mx21d1
sum7(.z(sum[7]), .i0(sum0[7]), .i1(sum1[7]), .s(sel_carry)),
sum8(.z(sum[8]), .i0(sum0[8]), .i1(sum1[8]), .s(sel_carry)),
sum9(.z(sum[9]), .i0(sum0[9]), .i1(sum1[9]), .s(sel_carry)),
sum10(.z(sum[10]), .i0(sum0[10]), .i1(sum1[10]), .s(sel_carry)),
sum11(.z(sum[11]), .i0(sum0[11]), .i1(sum1[11]), .s(sel_carry)),
sum12(.z(sum[12]), .i0(sum0[12]), .i1(sum1[12]), .s(sel_carry));
assign att_data_out = sum[12:4];
endmodule // strgbaoffseti