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

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

Browse source
This commit is contained in:
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
Download patch file Download diff file Expand all files Collapse all files

35
modules/pcx86/lib/debugger.js
View file

@ -2695,16 +2695,17 @@ class DebuggerX86 extends Debugger {
}
/**
* runCPU(fUpdateFocus)
* startCPU(fUpdateFocus, fQuiet)
*
* @this {DebuggerX86}
* @param {boolean} [fUpdateFocus] is true to update focus
* @param {boolean} [fQuiet]
* @return {boolean} true if run request successful, false if not
*/
runCPU(fUpdateFocus)
startCPU(fUpdateFocus, fQuiet)
{
if (!this.isCPUAvail()) return false;
this.cpu.runCPU(fUpdateFocus);
if (!this.checkCPU(fQuiet)) return false;
this.cpu.startCPU(fUpdateFocus);
return true;
}
@ -2719,7 +2720,7 @@ class DebuggerX86 extends Debugger {
*/
stepCPU(nCycles, fRegs, fUpdateCPU)
{
if (!this.isCPUAvail()) return false;
if (!this.checkCPU()) return false;
this.nCycles = 0;
do {
@ -2731,6 +2732,9 @@ class DebuggerX86 extends Debugger {
*/
if (this.checksEnabled()) this.checkInstruction(this.cpu.regLIP, 0);
}
/*
* For our typically tiny bursts (usually single instructions), mimic what runCPU() does.
*/
try {
var nCyclesStep = this.cpu.stepCPU(nCycles);
if (nCyclesStep > 0) {
@ -2750,7 +2754,7 @@ class DebuggerX86 extends Debugger {
} while (this.cpu.opFlags & X86.OPFLAG_PREFIXES);
/*
* Because we called cpu.stepCPU() and not cpu.runCPU(), we must nudge the cpu's update code,
* Because we called cpu.stepCPU() and not cpu.startCPU(), we must nudge the cpu's update code,
* and then update our own state. Normally, the only time fUpdateCPU will be false is when doTrace()
* is calling us in a loop, in which case it will perform its own updateCPU() when it's done.
*/
@ -2795,23 +2799,20 @@ class DebuggerX86 extends Debugger {
}
/**
* isCPUAvail()
* checkCPU(fQuiet)
*
* Make sure the CPU is ready (finished initializing), not busy (already running), and not in an error state.
*
* @this {DebuggerX86}
* @param {boolean} [fQuiet]
* @return {boolean}
*/
isCPUAvail()
checkCPU(fQuiet)
{
if (!this.cpu)
return false;
if (!this.cpu.isReady())
return false;
if (!this.cpu.isPowered())
return false;
if (this.cpu.isBusy())
if (!this.cpu || !this.cpu.isReady() || !this.cpu.isPowered() || this.cpu.isRunning()) {
if (!fQuiet) this.println("cpu busy or unavailable, command ignored");
return false;
}
return !this.cpu.isError();
}
@ -5928,7 +5929,7 @@ class DebuggerX86 extends Debugger {
this.parseAddrOptions(dbgAddr, sOptions);
this.setTempBreakpoint(dbgAddr);
}
if (!this.runCPU(true)) {
if (!this.startCPU(true)) {
if (!fQuiet) this.println("cpu busy or unavailable, run command ignored");
}
}
@ -6052,7 +6053,7 @@ class DebuggerX86 extends Debugger {
if (this.nStep) {
this.setTempBreakpoint(dbgAddr);
if (!this.runCPU()) {
if (!this.startCPU()) {
if (this.cmp) this.cmp.updateFocus();
this.nStep = 0;
}