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Preliminary groundwork for FPU support

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This commit is contained in:
Jeff Parsons 2015-11-11 18:11:30 -08:00
commit 0c6db1df46
18 changed files with 756 additions and 173 deletions
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14
modules/pcjs/lib/cpu.js
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@ -138,8 +138,7 @@ function CPU(parmsCPU, nCyclesDefault)
*/
this.aVideo = [];
var cpu = this;
this.onRunTimeout = function onRunTimeout() { cpu.runCPU(); };
this.onRunTimeout = this.runCPU.bind(this); // function onRunTimeout() { cpu.runCPU(); };
this.setReady();
}
@ -179,9 +178,10 @@ CPU.STATUS_UPDATES_PER_SECOND = 2;
*/
CPU.prototype.initBus = function(cmp, bus, cpu, dbg)
{
this.cmp = cmp;
this.bus = bus;
this.dbg = dbg;
this.cmp = cmp;
/*
* Attach the Video component to the CPU, so that the CPU can periodically update
* the video display via updateVideo(), as cycles permit.
@ -189,13 +189,17 @@ CPU.prototype.initBus = function(cmp, bus, cpu, dbg)
for (var video = null; (video = cmp.getMachineComponent("Video", video));) {
this.aVideo.push(video);
}
/*
* Attach the ChipSet component to the CPU, so that it can obtain the IDT vector number of
* pending hardware interrupts, in response to ChipSet's updateINTR() notifications.
* Attach the ChipSet component to the CPU so that it can obtain the IDT vector number
* of pending hardware interrupts in response to the ChipSet's updateINTR() notifications.
*
* We must also call chipset.updateAllTimers() periodically; stepCPU() takes care of that.
*/
this.chipset = cmp.getMachineComponent("ChipSet");
this.fpu = cmp.getMachineComponent("FPU");
this.setReady();
};