Retro/pcjs
Watch
1
0
Fork
You've already forked pcjs
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Support for (future) Control Panel animation

Browse source
This commit is contained in:
Jeff Parsons 2015-01-23 14:43:32 -08:00 • committed by jeffpar
commit 2e729f9179
19 changed files with 329 additions and 196 deletions
Download patch file Download diff file Expand all files Collapse all files

36
modules/pcjs/lib/x86help.js
View file

@ -348,9 +348,9 @@ var X86Help = {
*/
opHelpXCHGrb: function(dst, src) {
if (this.regEA < 0) {
//
// Decode which register was src
//
/*
* Decode which register was src
*/
switch (this.bModRM & 0x7) {
case 0x0: // AL
this.regEAX = (this.regEAX & ~0xff) | dst;
@ -381,11 +381,11 @@ var X86Help = {
}
this.nStepCycles -= this.CYCLES.nOpCyclesXchgRR;
} else {
//
// This is a case where the ModRM decoder that's calling us didn't know it should have called modEAByte()
// instead of getEAByte(), so we compensate by updating regEAWrite. However, setEAByte() has since been
// changed to revalidate the write using segEA:offEA, so updating regEAWrite here isn't strictly necessary.
//
/*
* This is a case where the ModRM decoder that's calling us didn't know it should have called modEAByte()
* instead of getEAByte(), so we compensate by updating regEAWrite. However, setEAByte() has since been
* changed to revalidate the write using segEA:offEA, so updating regEAWrite here isn't strictly necessary.
*/
this.regEAWrite = this.regEA;
this.setEAByte(dst);
this.nStepCycles -= this.CYCLES.nOpCyclesXchgRM;
@ -410,9 +410,9 @@ var X86Help = {
*/
opHelpXCHGrw: function(dst, src) {
if (this.regEA < 0) {
//
// Decode which register was src
//
/*
* Decode which register was src
*/
switch (this.bModRM & 0x7) {
case 0x0: // AX
this.regEAX = dst;
@ -443,11 +443,11 @@ var X86Help = {
}
this.nStepCycles -= this.CYCLES.nOpCyclesXchgRR;
} else {
//
// This is a case where the ModRM decoder that's calling us didn't know it should have called modEAWord()
// instead of getEAWord(), so we compensate by updating regEAWrite. However, setEAWord() has since been
// changed to revalidate the write using segEA:offEA, so updating regEAWrite here isn't strictly necessary.
//
/*
* This is a case where the ModRM decoder that's calling us didn't know it should have called modEAWord()
* instead of getEAWord(), so we compensate by updating regEAWrite. However, setEAWord() has since been
* changed to revalidate the write using segEA:offEA, so updating regEAWrite here isn't strictly necessary.
*/
this.regEAWrite = this.regEA;
this.setEAWord(dst);
this.nStepCycles -= this.CYCLES.nOpCyclesXchgRM;
@ -539,7 +539,7 @@ var X86Help = {
* deals exclusively with IDT descriptors.
*
* This means we must take care to replicate critical features of setCSIP(); eg, setting segCS.fCall before
* calling loadIDT(), updating EIP, and flushing the prefetch queue.
* calling loadIDT(), updating LIP, and flushing the prefetch queue.
*
* @this {X86CPU}
* @param {number} nIDT
@ -714,7 +714,7 @@ var X86Help = {
/*
* Similarly, the PC AT ROM BIOS deliberately generates a couple of GP faults as part of the POST
* (Power-On Self Test); we don't want to ignore those, but we don't want to halt on them either. We
* detect those faults by virtue of EIP being in the range %0F0000 to %0FFFFF.
* detect those faults by virtue of the LIP being in the range %0F0000 to %0FFFFF.
*/
if (this.regLIP >= 0x0F0000 && this.regLIP <= 0x0FFFFF) {
fHalt = false;