HTTP/1.1 200 OK Date: Tue, 12 Jun 2001 17:29:32 GMT Server: Apache/1.3.12 (Unix) ApacheJServ/1.1.2 Set-Cookie: Apache=204.210.50.240.24532992366972722; path=/ Last-Modified: Tue, 21 May 1996 20:08:48 GMT ETag: "a1919-1642-31a222d0" Accept-Ranges: bytes Content-Length: 5698 Connection: close Content-Type: text/plain //**************************************************************************** // ---- version information ---- // // ThreeToEightLineDecoder.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 creating and maintaining a // 3-to 8-line decoder/multiplexer, inverting (74hct138) // // 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 ThreeToEightLineDecoder extends IntegratedCircuit { //---------------------------------------------------------------------------- // The constructor of a new 3- to 8-line decoder //---------------------------------------------------------------------------- public ThreeToEightLineDecoder(Pin PinGrid[][], int x, int y) { super (x, y, 10, 11 , 3, 1, 4, 9, 6, 8); // x,y,w,h HitBox x,y,w,h,I,O IPin[0] = new InputPin("0", 1, 2, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[1] = new InputPin("1", 1, 3, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[2] = new InputPin("2", 1, 4, 2, 0, 0, 0, ComponentPin.PIN_NORMAL); // name, x, y, w, h, inv IPin[3] = new InputPin("EN1", 1, 7, 2, 0, 0, 0, ComponentPin.PIN_NEGATIVE | ComponentPin.PIN_TEXT_INVISIBLE); // name, x, y, w, h, inv IPin[4] = new InputPin("EN2", 1, 8, 2, 0, 0, 0, ComponentPin.PIN_NEGATIVE | ComponentPin.PIN_TEXT_INVISIBLE); // name, x, y, w, h, inv IPin[5] = new InputPin("EN3", 1, 9, 2, 0, 0, 0, ComponentPin.PIN_TEXT_INVISIBLE); // name, x, y, w, h, inv OPin[0] = new OutputPin("0", 9, 2, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[1] = new OutputPin("1", 9, 3, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[2] = new OutputPin("2", 9, 4, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[3] = new OutputPin("3", 9, 5, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[4] = new OutputPin("4", 9, 6, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[5] = new OutputPin("5", 9, 7, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[6] = new OutputPin("6", 9, 8, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv OPin[7] = new OutputPin("7", 9, 9, -2, 0, 0, 0, ComponentPin.PIN_NEGATIVE); // name, x, y, w, h, inv ComponentName = "3- to 8-line decoder"; ClassName = "ThreeToEightLineDecoder"; RegisterPins (PinGrid, x, y); } //---------------------------------------------------------------------------- // The constructor of a new decoder, which is a copy of CompToCopy //---------------------------------------------------------------------------- public ThreeToEightLineDecoder (ElectronicComponent CompToCopy, int xo, int yo) { super (CompToCopy, xo, yo); } //---------------------------------------------------------------------------- // Method for copying this component. //---------------------------------------------------------------------------- public ElectronicComponent Copy(int xo, int yo) { ThreeToEightLineDecoder NewComponent = new ThreeToEightLineDecoder(this, xo, yo); return NewComponent; } //---------------------------------------------------------------------------- // Here is the code that's simulating the component //---------------------------------------------------------------------------- public void SimulateLogic() { int ix, o = 0; if (IPin[3].getLevel() == 0 || // EN1 IPin[4].getLevel() == 0 || // EN2 IPin[5].getLevel() == 0 ) { // EN3 // IC NOT enabled, All outputs high. for (ix = 0; ix < 8; ix++) { OPin[ix].Level = 0; } return; } if (IPin[0].getLevel() == 5) o |= 1; if (IPin[1].getLevel() == 5) o |= 2; if (IPin[2].getLevel() == 5) o |= 4; for (ix = 0; ix < 8; ix++) { if (ix != o) { OPin[ix].Level = 0; } else { OPin[ix].Level = 5; } } } //---------------------------------------------------------------------------- // Do some additional drawing //---------------------------------------------------------------------------- public void draw(Graphics g, int xp, int yp, int gs) { super.draw (g, xp, yp, gs); int x = Pos.x - xp; int y = Pos.y - yp; // Draw the body g.setColor (ComponentColor); g.drawLine ((x + 3) * gs, (int)((y + 6.5) * gs), (x + 5) * gs, (int)((y + 6.5) * gs)); g.drawLine ((x + 5) * gs, (int)((y + 6.5) * gs), (x + 5) * gs, (int)((y + 9.5) * gs)); g.drawLine ((x + 3) * gs, (int)((y + 9.5) * gs), (x + 5) * gs, (int)((y + 9.5) * gs)); } }