div_rom_sc.v
2.67 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
/*
*************************************************************************
* *
* 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* unpublished proprietary information of Silicon Graphics, Inc., and *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: div_rom_sc.v,v 1.1.1.1 2002/05/17 06:14:58 blythe Exp $
////////////////////////////////////////////////////////////////////////
//
// Project Reality
//
// module: div_rom_sc
// description: Standard cell divide rom replacement. No oe.
//
// designer: Phil Gossett
// date: 4/12/95
//
////////////////////////////////////////////////////////////////////////
module div_rom_sc (clk, a, out);
input clk;
input [9:0] a;
output [15:0] out;
wire [9:0] areg;
wire [5:0] index;
wire [23:0] slope_incpt;
wire [3:0] frac;
dfntnq2 reg0 (.cp(clk), .d(a[0]), .q(areg[0]));
dfntnq2 reg1 (.cp(clk), .d(a[1]), .q(areg[1]));
dfntnq2 reg2 (.cp(clk), .d(a[2]), .q(areg[2]));
dfntnq2 reg3 (.cp(clk), .d(a[3]), .q(areg[3]));
dfntnq2 reg4 (.cp(clk), .d(a[4]), .q(areg[4]));
dfntnq2 reg5 (.cp(clk), .d(a[5]), .q(areg[5]));
dfntnq2 reg6 (.cp(clk), .d(a[6]), .q(areg[6]));
dfntnq2 reg7 (.cp(clk), .d(a[7]), .q(areg[7]));
dfntnq2 reg8 (.cp(clk), .d(a[8]), .q(areg[8]));
dfntnq2 reg9 (.cp(clk), .d(a[9]), .q(areg[9]));
mx21d1h mx0 (.s(index[5]), .i0(areg[0]), .i1(areg[1]), .z(frac[0]));
mx21d1h mx1 (.s(index[5]), .i0(areg[1]), .i1(areg[2]), .z(frac[1]));
mx21d1h mx2 (.s(index[5]), .i0(areg[2]), .i1(areg[3]), .z(frac[2]));
mx21d1h mx3 (.s(index[5]), .i0(areg[3]), .i1(areg[4]), .z(frac[3]));
mx21d1h mx4 (.s(index[5]), .i0(areg[4]), .i1(areg[5]), .z(index[0]));
mx21d1h mx5 (.s(index[5]), .i0(areg[5]), .i1(areg[6]), .z(index[1]));
mx21d1h mx6 (.s(index[5]), .i0(areg[6]), .i1(areg[7]), .z(index[2]));
mx21d1h mx7 (.s(index[5]), .i0(areg[7]), .i1(areg[8]), .z(index[3]));
mx21d1h mx8 (.s(index[5]), .i0(areg[8]), .i1(areg[0]), .z(index[4]));
ni01d5 ni9 ( .i(areg[9]), .z(index[5]));
div_pnt_slp pntslp (.index(index), .slope_incpt(slope_incpt));
div_interp interp (.pnt(slope_incpt[15:0]), .slp(slope_incpt[23:16]),
.frac(frac), .sum(out));
endmodule // div_rom_sc