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Laid the groundwork for bring PCx86 up-to-date with timer functionality matching PC8080 and PDPjs (new timer services added)

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Jeff Parsons 2017-08-01 14:26:52 -07:00 • committed by Jeff Parsons
commit 072b8fa2df
8 changed files with 1693 additions and 1493 deletions
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9
modules/pc8080/lib/cpu.js
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@ -956,7 +956,10 @@ class CPU8080 extends Component {
* timeout we're about to set. The simplest way to resolve that is to immediately call endBurst()
* and bias the above cycle timeout by the number of cycles that the burst executed.
*/
this.aTimers[iTimer][0] = nCycles + this.endBurst();
if (this.flags.running) {
nCycles += this.endBurst();
}
this.aTimers[iTimer][0] = nCycles;
}
}
return nCycles;
@ -971,7 +974,7 @@ class CPU8080 extends Component {
*/
getMSCycles(ms)
{
return (this.nCyclesPerSecond * this.nCyclesMultiplier) / 1000 * ms;
return ((this.nCyclesPerSecond * this.nCyclesMultiplier) / 1000 * ms)|0;
}
/**
@ -987,6 +990,7 @@ class CPU8080 extends Component {
{
for (var i = this.aTimers.length - 1; i >= 0; i--) {
var timer = this.aTimers[i];
this.assert(!isNaN(timer[0]));
if (timer[0] < 0) continue;
if (nCycles > timer[0]) {
nCycles = timer[0];
@ -1009,6 +1013,7 @@ class CPU8080 extends Component {
{
for (var i = this.aTimers.length - 1; i >= 0; i--) {
var timer = this.aTimers[i];
this.assert(!isNaN(timer[0]));
if (timer[0] < 0) continue;
timer[0] -= nCycles;
if (timer[0] <= 0) {