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Cleaned up the PDP-11 updateDisplay(s) code, and removed the update hack inside the WAIT instruction; display updates now occur in sync with the machine's 60Hz clock

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Jeff 2016-11-04 13:35:20 -07:00 • committed by Jeff Parsons
commit a7a44a8288
9 changed files with 485 additions and 460 deletions
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24
modules/pdp11/lib/cpu.js
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@ -505,26 +505,28 @@ CPUPDP11.prototype.setBinding = function(sType, sBinding, control, sValue)
};
/**
* updateComputer(fForce)
* updateDisplays(nUpdate)
*
* Simpler wrapper around the Computer's updateDisplays() method.
*
* @this {CPUPDP11}
* @param {boolean} [fForce]
* @param {number} [nUpdate] (1 for periodic, -1 for forced, 0 or undefined otherwise)
*/
CPUPDP11.prototype.updateComputer = function(fForce)
CPUPDP11.prototype.updateDisplays = function(nUpdate)
{
if (this.cmp) this.cmp.updateStatus(fForce);
if (this.cmp) this.cmp.updateDisplays(nUpdate);
};
/**
* updateStatus(fForce)
* updateDisplay(nUpdate)
*
* Some of the CPU bindings provide feedback and therefore need to be updated periodically. This is called
* via the Computer's updateStatus() handler several times per second; see YIELDS_PER_STATUS.
* Some of the CPU bindings provide feedback and therefore need to be updated periodically.
* However, this should be called via the Computer's updateDisplays() interface, not directly.
*
* @this {CPUPDP11}
* @param {boolean} [fForce]
* @param {number} [nUpdate] (1 for periodic, -1 for forced, 0 or undefined otherwise)
*/
CPUPDP11.prototype.updateStatus = function(fForce)
CPUPDP11.prototype.updateDisplay = function(nUpdate)
{
var controlSpeed = this.bindings["speed"];
if (controlSpeed) controlSpeed.textContent = this.getSpeedCurrent();
@ -1101,7 +1103,7 @@ CPUPDP11.prototype.runCPU = function()
if (this.nCyclesNextYield <= 0) {
this.nCyclesNextYield += this.nCyclesPerYield;
if (++this.nYieldsSinceStatusUpdate >= CPUPDP11.YIELDS_PER_STATUS) {
this.updateComputer();
this.updateDisplays();
this.nYieldsSinceStatusUpdate = 0;
}
break;
@ -1216,7 +1218,7 @@ CPUPDP11.prototype.yieldCPU = function()
* odd for those messages to show CPU state changes if the Control Panel, Video display, etc, does not,
* so I've added this call to try to keep things looking synchronized.
*/
this.updateComputer();
this.updateDisplays();
};
if (NODE) module.exports = CPUPDP11;