HTTP/1.1 200 OK Date: Tue, 12 Jun 2001 17:28:58 GMT Server: Apache/1.3.12 (Unix) ApacheJServ/1.1.2 Set-Cookie: Apache=204.210.50.240.2452199236693881; path=/ Last-Modified: Tue, 21 May 1996 20:08:38 GMT ETag: "a18b2-1804-31a222c6" Accept-Ranges: bytes Content-Length: 6148 Connection: close Content-Type: text/plain //**************************************************************************** // ---- version information ---- // // BCDToSevenSegDecoder.java v 1.00 b1 // Written by: I. van Rienen / E-mail ivr@bart.nl // URL: http://www/bart.nl/~ivr // Initial release: // Released in public domain: // // ---- Description ---- // Java class containing methods for BCD to 7-seg decoder // // This program and the Java source is in the public domain. // Permission to use, copy, modify, and distribute this software // and its documentation for NON-COMMERCIAL purposes and // without fee is hereby granted. // // Copyright 1996 // // Iwan van Rienen // Joan Maetsuyckerstr. 145 // 2593 ZG The Hague // The Netherlands // // I am not responsible for any bugs in this program and // possible damage to hard- or software when using this program. //**************************************************************************** import java.applet.Applet; import java.awt.*; import java.util.Vector; class BCDToSevenSegDecoder extends IntegratedCircuit { static final int LE = 0; static final int BI = 1; static final int LT = 2; static final int A = 3; static final int B = 4; static final int C = 5; static final int D = 6; static final int a = 0; static final int b = 1; static final int c = 2; static final int d = 3; static final int e = 4; static final int f = 5; static final int g = 6; static final int SegLev[][] = { { 5, 5, 5, 5, 5, 5, 0} , // 0 { 0, 5, 5, 0, 0, 0, 0} , // 1 { 5, 5, 0, 5, 5, 0, 5} , // 2 { 5, 5, 5, 5, 0, 0, 5} , // 3 { 0, 5, 5, 0, 0, 5, 5} , // 4 { 5, 0, 5, 5, 0, 5, 5} , // 5 { 5, 0, 5, 5, 5, 5, 5} , // 6 { 5, 5, 5, 0, 0, 0, 0} , // 7 { 5, 5, 5, 5, 5, 5, 5} , // 8 { 5, 5, 5, 5, 0, 5, 5} , // 9 { 5, 5, 5, 0, 5, 5, 5} , // A { 0, 0, 5, 5, 5, 5, 5} , // B { 5, 0, 0, 5, 5, 5, 0} , // C { 0, 5, 5, 5, 5, 0, 5} , // D { 5, 0, 0, 5, 5, 5, 5} , // E { 5, 0, 0, 0, 5, 5, 5} }; // F int ActVal = 0; //---------------------------------------------------------------------------- // The constructor of a new BCD to Seven-Segment decoder //---------------------------------------------------------------------------- public BCDToSevenSegDecoder(Pin PinGrid[][], int x, int y) { super (x, y, 10, 13 , 3, 1, 4, 11, 7, 7); // x,y,w,h HitBox x,y,w,h,I,O IPin[LE] = new InputPin("LE", 1, 2, 2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv IPin[BI] = new InputPin("BI", 1, 4, 2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv IPin[LT] = new InputPin("LT", 1, 6, 2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv IPin[A] = new InputPin("A", 1, 8, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[B] = new InputPin("B", 1, 9, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[C] = new InputPin("C", 1, 10, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[D] = new InputPin("D", 1, 11, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[a] = new OutputPin("a", 9, 3, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[b] = new OutputPin("b", 9, 4, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[c] = new OutputPin("c", 9, 5, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[d] = new OutputPin("d", 9, 6, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[e] = new OutputPin("e", 9, 7, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[f] = new OutputPin("f", 9, 8, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv OPin[g] = new OutputPin("g", 9, 9, -2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv ComponentName = "BCD to 7-segment decoder"; ClassName = "BCDToSevenSegDecoder"; RegisterPins (PinGrid, x, y); } //---------------------------------------------------------------------------- // The constructor of a new decoder, which is a copy of CompToCopy //---------------------------------------------------------------------------- public BCDToSevenSegDecoder (ElectronicComponent CompToCopy, int xo, int yo) { super (CompToCopy, xo, yo); } //---------------------------------------------------------------------------- // Method for copying this component. //---------------------------------------------------------------------------- public ElectronicComponent Copy(int xo, int yo) { BCDToSevenSegDecoder NewComponent = new BCDToSevenSegDecoder(this, xo, yo); return NewComponent; } //---------------------------------------------------------------------------- // Here is the code that's simulating the component //---------------------------------------------------------------------------- public void SimulateLogic() { int ix; if (IPin[LT].getLevel() == 5) { // Lamp test for (ix = 0; ix < 7; ix++) { OPin[ix].Level = 5; } return; } if (IPin[BI].getLevel() == 5) { // Blank input for (ix = 0; ix < 7; ix++) { OPin[ix].Level = 0; } return; } if (IPin[LE].getLevel() == 5) { // Latch enable ActVal = 0; if (IPin[A].getLevel() == 5) ActVal += 1; if (IPin[B].getLevel() == 5) ActVal += 2; if (IPin[C].getLevel() == 5) ActVal += 4; if (IPin[D].getLevel() == 5) ActVal += 8; } for (ix = 0; ix < 7; ix++) { OPin[ix].Level = SegLev[ActVal] [ix]; } } }