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Added support for an optional "power" button

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This commit is contained in:
Jeff Parsons 2016-01-16 14:38:37 -08:00
commit f73303c95a
2 changed files with 128 additions and 58 deletions
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34
modules/pcjs/lib/cpu.js
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@ -22,7 +22,7 @@
*
* You are required to include the above copyright notice in every source code file of every
* copy or modified version of this work, and to display that copyright notice on every screen
* that loads or runs any version of this software (see Computer.sCopyright).
* that loads or runs any version of this software (see Computer.COPYRIGHT).
*
* Some PCjs files also attempt to load external resource files, such as character-image files,
* ROM files, and disk image files. Those external resource files are not considered part of the
@ -167,6 +167,8 @@ CPU.YIELDS_PER_SECOND = 30;
CPU.VIDEO_UPDATES_PER_SECOND = 60; // WARNING: if you change this, beware of side-effects in the Video component
CPU.STATUS_UPDATES_PER_SECOND = 2;
CPU.BUTTONS = ["power", "reset"];
/**
* initBus(cmp, bus, cpu, dbg)
*
@ -181,6 +183,12 @@ CPU.prototype.initBus = function(cmp, bus, cpu, dbg)
this.cmp = cmp;
this.bus = bus;
this.dbg = dbg;
for (var i = 0; i < CPU.BUTTONS.length; i++) {
var control = this.bindings[CPU.BUTTONS[i]];
if (control) this.cmp.setBinding(null, CPU.BUTTONS[i], control);
}
this.fpu = cmp.getMachineComponent("FPU");
/*
@ -522,6 +530,17 @@ CPU.prototype.setBinding = function(sHTMLType, sBinding, control)
var cpu = this;
var fBound = false;
switch (sBinding) {
case "power":
case "reset":
/*
* The "power" and "reset" buttons are functions of the entire computer, not just the CPU,
* but it's not always convenient to stick a power button in the Computer component definition,
* so we record those bindings here and pass them on to the Computer component in initBus().
*/
this.bindings[sBinding] = control;
fBound = true;
break;
case "run":
this.bindings[sBinding] = control;
control.onclick = function onClickRun() {
@ -534,19 +553,6 @@ CPU.prototype.setBinding = function(sHTMLType, sBinding, control)
fBound = true;
break;
case "reset":
/*
* A "reset" button is really a function of the entire computer, not just the CPU, but
* it's not always convenient to stick a reset button in the computer component definition,
* so we support a "reset" binding both here AND in the Computer component.
*/
this.bindings[sBinding] = control;
control.onclick = function onClickReset() {
if (cpu.cmp) cpu.cmp.onReset();
};
fBound = true;
break;
case "speed":
this.bindings[sBinding] = control;
fBound = true;