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Limit CPU display updates to a reasonable number (ie, twice per second)

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This commit is contained in:
Jeff 2016-11-14 20:10:18 -08:00 • committed by Jeff Parsons
commit 77897275eb
5 changed files with 247 additions and 238 deletions
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13
modules/pdp11/lib/cpu.js
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@ -105,6 +105,8 @@ function CPUPDP11(parmsCPU, nCyclesDefault)
var nMultiplier = parmsCPU['multiplier'] || 1;
this.nDisplayCount = 0;
this.nDisplayLimit = 30;
this.nCyclesPerSecond = nCycles;
/*
@ -525,12 +527,17 @@ CPUPDP11.prototype.updateDisplays = function(nUpdate)
* However, this should be called via the Computer's updateDisplays() interface, not directly.
*
* @this {CPUPDP11}
* @param {number} [nUpdate] (1 for periodic, -1 for forced, 0 or undefined otherwise)
* @param {number} [nUpdate] (1 for periodic, -1 for forced, 0 otherwise)
*/
CPUPDP11.prototype.updateDisplay = function(nUpdate)
{
var controlSpeed = this.bindings["speed"];
if (controlSpeed) controlSpeed.textContent = this.getSpeedCurrent();
if (controlSpeed) {
if (nUpdate <= 0 || (this.nDisplayCount += nUpdate) >= this.nDisplayLimit) {
controlSpeed.textContent = this.getSpeedCurrent();
this.nDisplayCount = 0;
}
}
};
/**
@ -684,7 +691,7 @@ CPUPDP11.prototype.getSpeedCurrent = function()
/*
* TODO: Has toFixed() been "fixed" in all browsers (eg, IE) to return a rounded value now?
*/
return ((this.flags.running && this.mhz)? (this.mhz.toFixed(2) + "Mhz") : "Stopped");
return ((this.flags.running)? (this.mhz.toFixed(2) + "Mhz") : "Stopped");
};
/**