gfiles/gba
1
0
Fork 0
mirror of https://github.com/DPS2004/gba.git synced 2025-01-23 04:50:31 -03:00
Code Issues Projects Releases Packages Wiki Activity Actions
gba/IodineGBA/core/Timer.js
jsemu 43b5c74f2f Update to latest revision
2015-07-11 23:11:25 -04:00

846 lines
No EOL
34 KiB
JavaScript
Raw Blame History

"use strict";
/*
Copyright (C) 2012-2015 Grant Galitz
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
function GameBoyAdvanceTimer(IOCore) {
//Build references:
this.IOCore = IOCore;
}
GameBoyAdvanceTimer.prototype.prescalarLookup = [
0,
0x6,
0x8,
0xA
];
GameBoyAdvanceTimer.prototype.initialize = function () {
this.timer0Counter = 0;
this.timer0Reload = 0;
this.timer0Control = 0;
this.timer0Enabled = false;
this.timer0IRQ = false;
this.timer0Precounter = 0;
this.timer0Prescalar = 1;
this.timer0PrescalarShifted = 0;
this.timer1Counter = 0;
this.timer1Reload = 0;
this.timer1Control = 0;
this.timer1Enabled = false;
this.timer1IRQ = false;
this.timer1Precounter = 0;
this.timer1Prescalar = 1;
this.timer1PrescalarShifted = 0;
this.timer1CountUp = false;
this.timer2Counter = 0;
this.timer2Reload = 0;
this.timer2Control = 0;
this.timer2Enabled = false;
this.timer2IRQ = false;
this.timer2Precounter = 0;
this.timer2Prescalar = 1;
this.timer2PrescalarShifted = 0;
this.timer2CountUp = false;
this.timer3Counter = 0;
this.timer3Reload = 0;
this.timer3Control = 0;
this.timer3Enabled = false;
this.timer3IRQ = false;
this.timer3Precounter = 0;
this.timer3Prescalar = 1;
this.timer3PrescalarShifted = 0;
this.timer3CountUp = false;
this.timer1UseMainClocks = false;
this.timer1UseChainedClocks = false;
this.timer2UseMainClocks = false;
this.timer2UseChainedClocks = false;
this.timer3UseMainClocks = false;
this.timer3UseChainedClocks = false;
}
GameBoyAdvanceTimer.prototype.addClocks = function (clocks) {
clocks = clocks | 0;
//See if timer channels 0 and 1 are enabled:
this.clockSoundTimers(clocks | 0);
//See if timer channel 2 is enabled:
this.clockTimer2(clocks | 0);
//See if timer channel 3 is enabled:
this.clockTimer3(clocks | 0);
}
GameBoyAdvanceTimer.prototype.clockSoundTimers = function (audioClocks) {
audioClocks = audioClocks | 0;
for (var predictedClocks = 0, overflowClocks = 0; (audioClocks | 0) > 0; audioClocks = ((audioClocks | 0) - (predictedClocks | 0)) | 0) {
overflowClocks = this.nextAudioTimerOverflow() | 0;
predictedClocks = Math.min(audioClocks | 0, overflowClocks | 0) | 0;
//See if timer channel 0 is enabled:
this.clockTimer0(predictedClocks | 0);
//See if timer channel 1 is enabled:
this.clockTimer1(predictedClocks | 0);
//Clock audio system up to latest timer:
this.IOCore.sound.addClocks(predictedClocks | 0);
//Only jit if overflow was seen:
if ((overflowClocks | 0) == (predictedClocks | 0)) {
this.IOCore.sound.audioJIT();
}
}
}
GameBoyAdvanceTimer.prototype.clockTimer0 = function (clocks) {
clocks = clocks | 0;
if (this.timer0Enabled) {
this.timer0Precounter = ((this.timer0Precounter | 0) + (clocks | 0)) | 0;
while ((this.timer0Precounter | 0) >= (this.timer0Prescalar | 0)) {
var iterations = Math.min(this.timer0Precounter >> (this.timer0PrescalarShifted | 0), (0x10000 - (this.timer0Counter | 0)) | 0) | 0;
this.timer0Precounter = ((this.timer0Precounter | 0) - ((iterations | 0) << (this.timer0PrescalarShifted | 0))) | 0;
this.timer0Counter = ((this.timer0Counter | 0) + (iterations | 0)) | 0;
if ((this.timer0Counter | 0) > 0xFFFF) {
this.timer0Counter = this.timer0Reload | 0;
this.timer0ExternalTriggerCheck();
this.timer1ClockUpTickCheck();
}
}
}
}
GameBoyAdvanceTimer.prototype.clockTimer1 = function (clocks) {
clocks = clocks | 0;
if (this.timer1UseMainClocks) {
this.timer1Precounter = ((this.timer1Precounter | 0) + (clocks | 0)) | 0;
while ((this.timer1Precounter | 0) >= (this.timer1Prescalar | 0)) {
var iterations = Math.min(this.timer1Precounter >> (this.timer1PrescalarShifted | 0), (0x10000 - (this.timer1Counter | 0)) | 0) | 0;
this.timer1Precounter = ((this.timer1Precounter | 0) - ((iterations | 0) << (this.timer1PrescalarShifted | 0))) | 0;
this.timer1Counter = ((this.timer1Counter | 0) + (iterations | 0)) | 0;
if ((this.timer1Counter | 0) > 0xFFFF) {
this.timer1Counter = this.timer1Reload | 0;
this.timer1ExternalTriggerCheck();
this.timer2ClockUpTickCheck();
}
}
}
}
GameBoyAdvanceTimer.prototype.clockTimer2 = function (clocks) {
clocks = clocks | 0;
if (this.timer2UseMainClocks) {
this.timer2Precounter = ((this.timer2Precounter | 0) + (clocks | 0)) | 0;
while ((this.timer2Precounter | 0) >= (this.timer2Prescalar | 0)) {
var iterations = Math.min(this.timer2Precounter >> (this.timer2PrescalarShifted | 0), (0x10000 - (this.timer2Counter | 0)) | 0) | 0;
this.timer2Precounter = ((this.timer2Precounter | 0) - ((iterations | 0) << (this.timer2PrescalarShifted | 0))) | 0;
this.timer2Counter = ((this.timer2Counter | 0) + (iterations | 0)) | 0;
if ((this.timer2Counter | 0) > 0xFFFF) {
this.timer2Counter = this.timer2Reload | 0;
this.timer2ExternalTriggerCheck();
this.timer3ClockUpTickCheck();
}
}
}
}
GameBoyAdvanceTimer.prototype.clockTimer3 = function (clocks) {
clocks = clocks | 0;
if (this.timer3UseMainClocks) {
this.timer3Precounter = ((this.timer3Precounter | 0) + (clocks | 0)) | 0;
while ((this.timer3Precounter | 0) >= (this.timer3Prescalar | 0)) {
var iterations = Math.min(this.timer3Precounter >> (this.timer3PrescalarShifted | 0), (0x10000 - (this.timer3Counter | 0)) | 0) | 0;
this.timer3Precounter = ((this.timer3Precounter | 0) - ((iterations | 0) << (this.timer3PrescalarShifted | 0))) | 0;
this.timer3Counter = ((this.timer3Counter | 0) + (iterations | 0)) | 0;
if ((this.timer3Counter | 0) > 0xFFFF) {
this.timer3Counter = this.timer3Reload | 0;
this.timer3ExternalTriggerCheck();
}
}
}
}
GameBoyAdvanceTimer.prototype.timer1ClockUpTickCheck = function () {
if (this.timer1UseChainedClocks) {
this.timer1Counter = ((this.timer1Counter | 0) + 1) | 0;
if ((this.timer1Counter | 0) > 0xFFFF) {
this.timer1Counter = this.timer1Reload | 0;
this.timer1ExternalTriggerCheck();
this.timer2ClockUpTickCheck();
}
}
}
GameBoyAdvanceTimer.prototype.timer2ClockUpTickCheck = function () {
if (this.timer2UseChainedClocks) {
this.timer2Counter = ((this.timer2Counter | 0) + 1) | 0;
if ((this.timer2Counter | 0) > 0xFFFF) {
this.timer2Counter = this.timer2Reload | 0;
this.timer2ExternalTriggerCheck();
this.timer3ClockUpTickCheck();
}
}
}
GameBoyAdvanceTimer.prototype.timer3ClockUpTickCheck = function () {
if (this.timer3UseChainedClocks) {
this.timer3Counter = ((this.timer3Counter | 0) + 1) | 0;
if ((this.timer3Counter | 0) > 0xFFFF) {
this.timer3Counter = this.timer3Reload | 0;
this.timer3ExternalTriggerCheck();
}
}
}
GameBoyAdvanceTimer.prototype.timer0ExternalTriggerCheck = function () {
if (this.timer0IRQ) {
this.IOCore.irq.requestIRQ(0x08);
}
this.IOCore.sound.AGBDirectSoundTimer0ClockTick();
}
GameBoyAdvanceTimer.prototype.timer1ExternalTriggerCheck = function () {
if (this.timer1IRQ) {
this.IOCore.irq.requestIRQ(0x10);
}
this.IOCore.sound.AGBDirectSoundTimer1ClockTick();
}
GameBoyAdvanceTimer.prototype.timer2ExternalTriggerCheck = function () {
if (this.timer2IRQ) {
this.IOCore.irq.requestIRQ(0x20);
}
}
GameBoyAdvanceTimer.prototype.timer3ExternalTriggerCheck = function () {
if (this.timer3IRQ) {
this.IOCore.irq.requestIRQ(0x40);
}
}
GameBoyAdvanceTimer.prototype.writeTM0CNT8_0 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer0Reload = this.timer0Reload & 0xFF00;
data = data & 0xFF;
this.timer0Reload = this.timer0Reload | data;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM0CNT8_1 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer0Reload = this.timer0Reload & 0xFF;
data = data & 0xFF;
this.timer0Reload = this.timer0Reload | (data << 8);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM0CNT8_2 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer0Control = data & 0xFF;
if ((data & 0x80) != 0) {
if (!this.timer0Enabled) {
this.timer0Counter = this.timer0Reload | 0;
this.timer0Enabled = true;
this.timer0Precounter = 0;
}
}
else {
this.timer0Enabled = false;
}
this.timer0IRQ = ((data & 0x40) != 0);
this.timer0PrescalarShifted = this.prescalarLookup[data & 0x03] | 0;
this.timer0Prescalar = 1 << (this.timer0PrescalarShifted | 0);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM0CNT16 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer0Reload = data & 0xFFFF;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM0CNT32 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer0Reload = data & 0xFFFF;
this.timer0Control = data >> 16;
if ((data & 0x800000) != 0) {
if (!this.timer0Enabled) {
this.timer0Counter = this.timer0Reload | 0;
this.timer0Enabled = true;
this.timer0Precounter = 0;
}
}
else {
this.timer0Enabled = false;
}
this.timer0IRQ = ((data & 0x400000) != 0);
this.timer0PrescalarShifted = this.prescalarLookup[(data >> 16) & 0x03] | 0;
this.timer0Prescalar = 1 << (this.timer0PrescalarShifted | 0);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.readTM0CNT8_0 = function () {
this.IOCore.updateTimerClocking();
return this.timer0Counter & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM0CNT8_1 = function () {
this.IOCore.updateTimerClocking();
return (this.timer0Counter & 0xFF00) >> 8;
}
GameBoyAdvanceTimer.prototype.readTM0CNT8_2 = function () {
return this.timer0Control & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM0CNT16 = function () {
this.IOCore.updateTimerClocking();
return this.timer0Counter | 0;
}
GameBoyAdvanceTimer.prototype.readTM0CNT32 = function () {
this.IOCore.updateTimerClocking();
var data = (this.timer0Control & 0xFF) << 16;
data = data | this.timer0Counter;
return data | 0;
}
GameBoyAdvanceTimer.prototype.writeTM1CNT8_0 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer1Reload = this.timer1Reload & 0xFF00;
data = data & 0xFF;
this.timer1Reload = this.timer1Reload | data;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM1CNT8_1 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer1Reload = this.timer1Reload & 0xFF;
data = data & 0xFF;
this.timer1Reload = this.timer1Reload | (data << 8);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM1CNT8_2 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer1Control = data & 0xFF;
if ((data & 0x80) != 0) {
if (!this.timer1Enabled) {
this.timer1Counter = this.timer1Reload | 0;
this.timer1Enabled = true;
this.timer1Precounter = 0;
}
}
else {
this.timer1Enabled = false;
}
this.timer1IRQ = ((data & 0x40) != 0);
this.timer1CountUp = ((data & 0x4) != 0);
this.timer1PrescalarShifted = this.prescalarLookup[data & 0x03] | 0;
this.timer1Prescalar = 1 << (this.timer1PrescalarShifted | 0);
this.preprocessTimer1();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM1CNT16 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer1Reload = data & 0xFFFF;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM1CNT32 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.IOCore.sound.audioJIT();
this.timer1Reload = data & 0xFFFF;
this.timer1Control = data >> 16;
if ((data & 0x800000) != 0) {
if (!this.timer1Enabled) {
this.timer1Counter = this.timer1Reload | 0;
this.timer1Enabled = true;
this.timer1Precounter = 0;
}
}
else {
this.timer1Enabled = false;
}
this.timer1IRQ = ((data & 0x400000) != 0);
this.timer1CountUp = ((data & 0x40000) != 0);
this.timer1PrescalarShifted = this.prescalarLookup[(data >> 16) & 0x03] | 0;
this.timer1Prescalar = 1 << (this.timer1PrescalarShifted | 0);
this.preprocessTimer1();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.readTM1CNT8_0 = function () {
this.IOCore.updateTimerClocking();
return this.timer1Counter & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM1CNT8_1 = function () {
this.IOCore.updateTimerClocking();
return (this.timer1Counter & 0xFF00) >> 8;
}
GameBoyAdvanceTimer.prototype.readTM1CNT8_2 = function () {
return this.timer1Control & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM1CNT16 = function () {
this.IOCore.updateTimerClocking();
return this.timer1Counter | 0;
}
GameBoyAdvanceTimer.prototype.readTM1CNT32 = function () {
this.IOCore.updateTimerClocking();
var data = (this.timer1Control & 0xFF) << 16;
data = data | this.timer1Counter;
return data | 0;
}
GameBoyAdvanceTimer.prototype.writeTM2CNT8_0 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer2Reload = this.timer2Reload & 0xFF00;
data = data & 0xFF;
this.timer2Reload = this.timer2Reload | data;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM2CNT8_1 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer2Reload = this.timer2Reload & 0xFF;
data = data & 0xFF;
this.timer2Reload = this.timer2Reload | (data << 8);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM2CNT8_2 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer2Control = data & 0xFF;
if ((data & 0x80) != 0) {
if (!this.timer2Enabled) {
this.timer2Counter = this.timer2Reload | 0;
this.timer2Enabled = true;
this.timer2Precounter = 0;
}
}
else {
this.timer2Enabled = false;
}
this.timer2IRQ = ((data & 0x40) != 0);
this.timer2CountUp = ((data & 0x4) != 0);
this.timer2PrescalarShifted = this.prescalarLookup[data & 0x03] | 0;
this.timer2Prescalar = 1 << (this.timer2PrescalarShifted | 0);
this.preprocessTimer2();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM2CNT16 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer2Reload = data & 0xFFFF;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM2CNT32 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer2Reload = data & 0xFFFF;
this.timer2Control = data >> 16;
if ((data & 0x800000) != 0) {
if (!this.timer2Enabled) {
this.timer2Counter = this.timer2Reload | 0;
this.timer2Enabled = true;
this.timer2Precounter = 0;
}
}
else {
this.timer2Enabled = false;
}
this.timer2IRQ = ((data & 0x400000) != 0);
this.timer2CountUp = ((data & 0x40000) != 0);
this.timer2PrescalarShifted = this.prescalarLookup[(data >> 16) & 0x03] | 0;
this.timer2Prescalar = 1 << (this.timer2PrescalarShifted | 0);
this.preprocessTimer2();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.readTM2CNT8_0 = function () {
this.IOCore.updateTimerClocking();
return this.timer2Counter & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM2CNT8_1 = function () {
this.IOCore.updateTimerClocking();
return (this.timer2Counter & 0xFF00) >> 8;
}
GameBoyAdvanceTimer.prototype.readTM2CNT8_2 = function () {
return this.timer2Control & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM2CNT16 = function () {
this.IOCore.updateTimerClocking();
return this.timer2Counter | 0;
}
GameBoyAdvanceTimer.prototype.readTM2CNT32 = function () {
this.IOCore.updateTimerClocking();
var data = (this.timer2Control & 0xFF) << 16;
data = data | this.timer2Counter;
return data | 0;
}
GameBoyAdvanceTimer.prototype.writeTM3CNT8_0 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer3Reload = this.timer3Reload & 0xFF00;
data = data & 0xFF;
this.timer3Reload = this.timer3Reload | data;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM3CNT8_1 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer3Reload = this.timer3Reload & 0xFF;
data = data & 0xFF;
this.timer3Reload = this.timer3Reload | (data << 8);
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM3CNT8_2 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer3Control = data & 0xFF;
if ((data & 0x80) != 0) {
if (!this.timer3Enabled) {
this.timer3Counter = this.timer3Reload | 0;
this.timer3Enabled = true;
this.timer3Precounter = 0;
}
}
else {
this.timer3Enabled = false;
}
this.timer3IRQ = ((data & 0x40) != 0);
this.timer3CountUp = ((data & 0x4) != 0);
this.timer3PrescalarShifted = this.prescalarLookup[data & 0x03] | 0;
this.timer3Prescalar = 1 << (this.timer3PrescalarShifted | 0);
this.preprocessTimer3();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM3CNT16 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer3Reload = data & 0xFFFF;
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.writeTM3CNT32 = function (data) {
data = data | 0;
this.IOCore.updateTimerClocking();
this.timer3Reload = data & 0xFFFF;
this.timer3Control = data >> 16;
if ((data & 0x800000) != 0) {
if (!this.timer3Enabled) {
this.timer3Counter = this.timer3Reload | 0;
this.timer3Enabled = true;
this.timer3Precounter = 0;
}
}
else {
this.timer3Enabled = false;
}
this.timer3IRQ = ((data & 0x400000) != 0);
this.timer3CountUp = ((data & 0x40000) != 0);
this.timer3PrescalarShifted = this.prescalarLookup[(data >> 16) & 0x03] | 0;
this.timer3Prescalar = 1 << (this.timer3PrescalarShifted | 0);
this.preprocessTimer3();
this.IOCore.updateCoreEventTime();
}
GameBoyAdvanceTimer.prototype.readTM3CNT8_0 = function () {
this.IOCore.updateTimerClocking();
return this.timer3Counter & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM3CNT8_1 = function () {
this.IOCore.updateTimerClocking();
return (this.timer3Counter & 0xFF00) >> 8;
}
GameBoyAdvanceTimer.prototype.readTM3CNT8_2 = function () {
return this.timer3Control & 0xFF;
}
GameBoyAdvanceTimer.prototype.readTM3CNT16 = function () {
this.IOCore.updateTimerClocking();
return this.timer3Counter | 0;
}
GameBoyAdvanceTimer.prototype.readTM3CNT32 = function () {
this.IOCore.updateTimerClocking();
var data = (this.timer3Control & 0xFF) << 16;
data = data | this.timer3Counter;
return data | 0;
}
GameBoyAdvanceTimer.prototype.preprocessTimer1 = function () {
this.timer1UseMainClocks = (this.timer1Enabled && !this.timer1CountUp);
this.timer1UseChainedClocks = (this.timer1Enabled && this.timer1CountUp);
}
GameBoyAdvanceTimer.prototype.preprocessTimer2 = function () {
this.timer2UseMainClocks = (this.timer2Enabled && !this.timer2CountUp);
this.timer2UseChainedClocks = (this.timer2Enabled && this.timer2CountUp);
}
GameBoyAdvanceTimer.prototype.preprocessTimer3 = function () {
this.timer3UseMainClocks = (this.timer3Enabled && !this.timer3CountUp);
this.timer3UseChainedClocks = (this.timer3Enabled && this.timer3CountUp);
}
if (typeof Math.imul == "function") {
//Math.imul found, insert the optimized path in:
GameBoyAdvanceTimer.prototype.nextTimer0OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer0Counter | 0)) | 0;
countUntilReload = Math.imul(countUntilReload | 0, this.timer0Prescalar | 0) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer0Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer0OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer0Enabled) {
eventTime = this.nextTimer0OverflowBase() | 0;
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer0Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer0Enabled) {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer0OverflowBase() | 0;
var reloadClocks = (0x10000 - (this.timer0Reload | 0)) | 0;
reloadClocks = Math.imul(reloadClocks | 0, this.timer0Prescalar | 0) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
countUntilReload = Math.imul(countUntilReload | 0, this.timer1Prescalar | 0) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer1Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer1Enabled) {
var reloadClocks = (0x10000 - (this.timer1Reload | 0)) | 0;
if (this.timer1CountUp) {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
eventTime = this.nextTimer0Overflow(eventTime | 0) | 0;
}
else {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer1OverflowBase() | 0;
reloadClocks = Math.imul(reloadClocks | 0, this.timer1Prescalar | 0) | 0;
reloadClocks = reloadClocks * numOverflows;
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer1Enabled) {
if (this.timer1CountUp) {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
eventTime = this.nextTimer0Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = this.nextTimer1OverflowBase() | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
countUntilReload = Math.imul(countUntilReload | 0, this.timer2Prescalar | 0) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer2Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer2Enabled) {
var reloadClocks = (0x10000 - (this.timer2Reload | 0)) | 0;
if (this.timer2CountUp) {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
eventTime = this.nextTimer1Overflow(eventTime | 0) | 0;
}
else {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer2OverflowBase() | 0;
reloadClocks = Math.imul(reloadClocks | 0, this.timer2Prescalar | 0) | 0;
reloadClocks = reloadClocks * numOverflows;
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer2Enabled) {
if (this.timer2CountUp) {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
eventTime = this.nextTimer1Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = this.nextTimer2OverflowBase() | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer3OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer3Enabled) {
if (this.timer3CountUp) {
var countUntilReload = (0x10000 - (this.timer3Counter | 0)) | 0;
eventTime = this.nextTimer2Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = (0x10000 - (this.timer3Counter | 0)) | 0;
eventTime = Math.imul(eventTime | 0, this.timer3Prescalar | 0) | 0;
eventTime = ((eventTime | 0) - (this.timer3Precounter | 0)) | 0;
}
}
return eventTime | 0;
}
}
else {
//Math.imul not found, use the compatibility method:
GameBoyAdvanceTimer.prototype.nextTimer0OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer0Counter | 0)) | 0;
countUntilReload = ((countUntilReload | 0) * (this.timer0Prescalar | 0)) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer0Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer0OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer0Enabled) {
eventTime = this.nextTimer0OverflowBase() | 0;
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer0Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer0Enabled) {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer0OverflowBase() | 0;
var reloadClocks = (0x10000 - (this.timer0Reload | 0)) | 0;
reloadClocks = ((reloadClocks | 0) * (this.timer0Prescalar | 0)) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
countUntilReload = ((countUntilReload | 0) * (this.timer1Prescalar | 0)) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer1Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer1Enabled) {
var reloadClocks = (0x10000 - (this.timer1Reload | 0)) | 0;
if (this.timer1CountUp) {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
eventTime = this.nextTimer0Overflow(eventTime | 0) | 0;
}
else {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer1OverflowBase() | 0;
reloadClocks = ((reloadClocks | 0) * (this.timer1Prescalar | 0)) | 0;
reloadClocks = reloadClocks * numOverflows;
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer1Enabled) {
if (this.timer1CountUp) {
var countUntilReload = (0x10000 - (this.timer1Counter | 0)) | 0;
eventTime = this.nextTimer0Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = this.nextTimer1OverflowBase() | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2OverflowBase = function () {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
countUntilReload = ((countUntilReload | 0) * (this.timer2Prescalar | 0)) | 0;
countUntilReload = ((countUntilReload | 0) - (this.timer2Precounter | 0)) | 0;
return countUntilReload | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2Overflow = function (numOverflows) {
numOverflows = numOverflows | 0;
var eventTime = 0x7FFFFFFF;
if (this.timer2Enabled) {
var reloadClocks = (0x10000 - (this.timer2Reload | 0)) | 0;
if (this.timer2CountUp) {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
reloadClocks = (reloadClocks | 0) * (numOverflows | 0);
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
eventTime = this.nextTimer1Overflow(eventTime | 0) | 0;
}
else {
numOverflows = ((numOverflows | 0) - 1) | 0;
var countUntilReload = this.nextTimer2OverflowBase() | 0;
reloadClocks = ((reloadClocks | 0) * (this.timer2Prescalar | 0)) | 0;
reloadClocks = reloadClocks * numOverflows;
eventTime = Math.min((countUntilReload | 0) + reloadClocks, 0x7FFFFFFF) | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer2Enabled) {
if (this.timer2CountUp) {
var countUntilReload = (0x10000 - (this.timer2Counter | 0)) | 0;
eventTime = this.nextTimer1Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = this.nextTimer2OverflowBase() | 0;
}
}
return eventTime | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer3OverflowSingle = function () {
var eventTime = 0x7FFFFFFF;
if (this.timer3Enabled) {
if (this.timer3CountUp) {
var countUntilReload = (0x10000 - (this.timer3Counter | 0)) | 0;
eventTime = this.nextTimer2Overflow(countUntilReload | 0) | 0;
}
else {
eventTime = (0x10000 - (this.timer3Counter | 0)) | 0;
eventTime = ((eventTime | 0) * (this.timer3Prescalar | 0)) | 0;
eventTime = ((eventTime | 0) - (this.timer3Precounter | 0)) | 0;
}
}
return eventTime | 0;
}
}
GameBoyAdvanceTimer.prototype.nextAudioTimerOverflow = function () {
var timer0 = this.nextTimer0OverflowSingle() | 0;
var timer1 = this.nextTimer1OverflowSingle() | 0;
return Math.min(timer0 | 0, timer1 | 0) | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer0IRQEventTime = function () {
var clocks = 0x7FFFFFFF;
if (this.timer0Enabled && this.timer0IRQ) {
clocks = this.nextTimer0OverflowSingle() | 0;
}
return clocks | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer1IRQEventTime = function () {
var clocks = 0x7FFFFFFF;
if (this.timer1Enabled && this.timer1IRQ) {
clocks = this.nextTimer1OverflowSingle() | 0;
}
return clocks | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer2IRQEventTime = function () {
var clocks = 0x7FFFFFFF;
if (this.timer2Enabled && this.timer2IRQ) {
clocks = this.nextTimer2OverflowSingle() | 0;
}
return clocks | 0;
}
GameBoyAdvanceTimer.prototype.nextTimer3IRQEventTime = function () {
var clocks = 0x7FFFFFFF;
if (this.timer3Enabled && this.timer3IRQ) {
clocks = this.nextTimer3OverflowSingle() | 0;
}
return clocks | 0;
}
Reference in a new issue View git blame Copy permalink