Cleaned up the SerialPort (formerly tty) logic a bit
This commit is contained in:
Jeff
Jeff Parsons
parent
795d57839b
commit
086ef51588
6 changed files with 482 additions and 449 deletions
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@ -69,14 +69,6 @@ function SerialPortPDP11(parmsSerial) {
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this.iAdapter = parmsSerial['adapter'];
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this.tty = {
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rbuf: [],
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rcsr: 0,
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xcsr: PDP11.DL11.XCSR.READY,
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delCode: 127,
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del: 0
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};
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/**
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* consoleOutput becomes a string that records serial port output if the 'binding' property is set to the
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* reserved name "console". Nothing is written to the console, however, until a linefeed (0x0A) is output
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@ -267,127 +259,24 @@ SerialPortPDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
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this.cpu = cpu;
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this.dbg = dbg;
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var serial = this;
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this.timerReceiveData = this.cpu.addTimer(function() {
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serial.rcsr |= PDP11.DL11.RCSR.RD;
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if (serial.rcsr & PDP11.DL11.RCSR.RIE) {
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serial.cpu.interrupt(PDP11.DL11.DELAY, PDP11.DL11.PRI, PDP11.DL11.RVEC);
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}
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});
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this.doneTransmitInterrupt = function() {
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serial.xcsr |= PDP11.DL11.XCSR.READY;
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return !!(serial.xcsr & PDP11.DL11.XCSR.TIE);
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};
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bus.addIOTable(this, SerialPortPDP11.UNIBUS_IOTABLE);
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this.setReady();
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};
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/**
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* readRCSR(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readRCSR = function(addr)
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{
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return this.tty.rcsr;
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};
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/**
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* writeRCSR(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
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*/
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SerialPortPDP11.prototype.writeRCSR = function(data, addr)
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{
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this.tty.rcsr = (this.tty.rcsr & 0x80) | (data & ~0x80);
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};
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/**
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* readRBUF(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.RBUF or 177562)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readRBUF = function(addr)
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{
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return 0;
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};
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/**
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* writeRBUF(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.RBUF or 177562)
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*/
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SerialPortPDP11.prototype.writeRBUF = function(data, addr)
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{
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};
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/**
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* readXCSR(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.XCSR or 177564)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readXCSR = function(addr)
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{
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return this.tty.xcsr;
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};
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/**
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* writeXCSR(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.XCSR or 177564)
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*/
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SerialPortPDP11.prototype.writeXCSR = function(data, addr)
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{
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/*
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* If the device is READY, and INT_ENABLE is transitioning to *set*, then generate an interrupt.
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*/
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if ((this.tty.xcsr & (PDP11.DL11.XCSR.READY | PDP11.DL11.XCSR.INT_ENABLE)) == PDP11.DL11.XCSR.READY && (data & PDP11.DL11.XCSR.INT_ENABLE)) {
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var device = this;
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this.cpu.interrupt(PDP11.DL11.XCSR.DELAY, PDP11.DL11.PRI, PDP11.DL11.VEC, function() {
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device.tty.xcsr |= PDP11.DL11.XCSR.READY;
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return !!(device.tty.xcsr & PDP11.DL11.XCSR.INT_ENABLE);
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});
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}
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/*
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* In any event, propagate all bits from data *except* for READY.
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*/
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this.tty.xcsr = (this.tty.xcsr & PDP11.DL11.XCSR.READY) | (data & ~PDP11.DL11.XCSR.READY);
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};
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/**
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* readXBUF(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.XBUF or 177566)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readXBUF = function(addr)
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{
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return 0;
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};
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/**
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* writeXBUF(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.XBUF or 177566)
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*/
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SerialPortPDP11.prototype.writeXBUF = function(data, addr)
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{
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data &= 0x7f;
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if (data) {
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var serial = this;
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this.transmitByte(data);
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this.tty.xcsr &= ~PDP11.DL11.XCSR.READY;
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this.cpu.interrupt(PDP11.DL11.XBUF.DELAY, PDP11.DL11.PRI, PDP11.DL11.VEC, function() {
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serial.tty.xcsr |= PDP11.DL11.XCSR.READY;
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return !!(serial.tty.xcsr & PDP11.DL11.XCSR.INT_ENABLE);
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});
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}
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};
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/**
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* initConnection()
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*
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@ -489,8 +378,6 @@ SerialPortPDP11.prototype.powerDown = function(fSave, fShutdown)
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*/
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SerialPortPDP11.prototype.reset = function()
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{
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this.tty.rcsr = 0;
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this.tty.xcsr = 0x80;
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this.initState();
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};
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@ -532,6 +419,9 @@ SerialPortPDP11.prototype.restore = function(data)
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*/
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SerialPortPDP11.prototype.initState = function(data)
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{
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this.rbuf = [];
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this.rcsr = 0;
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this.xcsr = PDP11.DL11.XCSR.READY;
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return true;
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};
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@ -634,6 +524,120 @@ SerialPortPDP11.prototype.transmitByte = function(b)
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return fTransmitted;
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};
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/**
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* readRCSR(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readRCSR = function(addr)
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{
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return this.rcsr & PDP11.DL11.RCSR.RMASK;
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};
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/**
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* writeRCSR(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.RCSR or 177560)
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*/
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SerialPortPDP11.prototype.writeRCSR = function(data, addr)
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{
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this.rcsr = (this.rcsr & ~PDP11.DL11.RCSR.WMASK) | (data & PDP11.DL11.RCSR.WMASK);
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};
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/**
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* readRBUF(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.RBUF or 177562)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readRBUF = function(addr)
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{
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var result = 0;
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this.rcsr &= ~PDP11.DL11.RCSR.RD;
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if (this.rbuf.length > 0) {
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result = this.rbuf.shift();
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if (this.rbuf.length > 0) {
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this.cpu.setTimer(this.timerReceiveData, 50);
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}
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}
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return result;
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};
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/**
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* writeRBUF(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.RBUF or 177562)
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*/
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SerialPortPDP11.prototype.writeRBUF = function(data, addr)
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{
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};
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/**
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* readXCSR(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.XCSR or 177564)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readXCSR = function(addr)
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{
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return this.xcsr;
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};
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/**
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* writeXCSR(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.XCSR or 177564)
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*/
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SerialPortPDP11.prototype.writeXCSR = function(data, addr)
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{
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/*
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* If the device is READY, and IE is transitioning on, then request an interrupt.
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*/
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if ((this.xcsr & (PDP11.DL11.XCSR.READY | PDP11.DL11.XCSR.TIE)) == PDP11.DL11.XCSR.READY && (data & PDP11.DL11.XCSR.TIE)) {
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this.cpu.interrupt(PDP11.DL11.XCSR.DELAY, PDP11.DL11.PRI, PDP11.DL11.XVEC, this.doneTransmitInterrupt);
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}
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this.xcsr = (this.xcsr & ~PDP11.DL11.XCSR.WMASK) | (data & PDP11.DL11.XCSR.WMASK);
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};
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/**
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* readXBUF(addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} addr (eg, PDP11.UNIBUS.XBUF or 177566)
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* @return {number}
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*/
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SerialPortPDP11.prototype.readXBUF = function(addr)
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{
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return 0;
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};
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/**
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* writeXBUF(data, addr)
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*
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* @this {SerialPortPDP11}
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* @param {number} data
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* @param {number} addr (eg, PDP11.UNIBUS.XBUF or 177566)
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*/
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SerialPortPDP11.prototype.writeXBUF = function(data, addr)
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{
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data &= PDP11.DL11.XBUF.DATA;
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if (data) {
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this.transmitByte(data);
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this.xcsr &= ~PDP11.DL11.XCSR.READY;
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this.cpu.interrupt(PDP11.DL11.XBUF.DELAY, PDP11.DL11.PRI, PDP11.DL11.XVEC, this.doneTransmitInterrupt);
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}
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};
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/*
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* ES6 ALERT: As you can see below, I've finally started using computed property names.
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*/
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