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Cleaned up how memory and IOPAGE traps are triggered, how ODD byte-level IOPAGE accesses are handled, and how memory is dumped by the Debugger

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Jeff Parsons 2016-10-10 17:09:29 -07:00 • committed by Jeff Parsons
commit 6514836098
31 changed files with 901 additions and 679 deletions
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73
modules/pdp11/lib/ram.js
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@ -83,6 +83,24 @@ RAMPDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
this.bus = bus;
this.cpu = cpu;
this.dbg = dbg;
this.initRAM();
};
/**
* initRAM()
*
* @this {RAMPDP11}
*/
RAMPDP11.prototype.initRAM = function()
{
if (!this.fAllocated && this.sizeRAM) {
if (this.bus.addMemory(this.addrRAM, this.sizeRAM, MemoryPDP11.TYPE.RAM)) {
this.fAllocated = true;
}
}
if (!this.fAllocated) {
Component.error("No RAM allocated");
}
this.setReady();
};
@ -96,15 +114,12 @@ RAMPDP11.prototype.initBus = function(cmp, bus, cpu, dbg)
*/
RAMPDP11.prototype.powerUp = function(data, fRepower)
{
if (!fRepower) {
/*
* The Computer powers up the CPU last, at which point CPUState state is restored,
* which includes the Bus state, and since we use the Bus to allocate all our memory,
* memory contents are already restored for us, so we don't need the usual restore
* logic. We just need to call reset(), to allocate memory for the RAM.
*/
this.reset();
}
/*
* The Computer powers up the CPU last, at which point CPUState state is restored,
* which includes the Bus state, and since we use the Bus to allocate all our memory,
* memory contents are already restored for us, so we don't need the usual restore
* logic.
*/
return true;
};
@ -124,7 +139,7 @@ RAMPDP11.prototype.powerDown = function(fSave, fShutdown)
* our memory, memory contents are already saved for us, so we don't need the usual
* save logic.
*/
return (fSave)? this.save() : true;
return true;
};
/**
@ -134,41 +149,9 @@ RAMPDP11.prototype.powerDown = function(fSave, fShutdown)
*/
RAMPDP11.prototype.reset = function()
{
if (!this.fAllocated && this.sizeRAM) {
if (this.bus.addMemory(this.addrRAM, this.sizeRAM, MemoryPDP11.TYPE.RAM)) {
this.fAllocated = true;
}
}
if (!this.fAllocated) {
Component.error("No RAM allocated");
}
};
/**
* save()
*
* This implements save support for the RAMPDP11 component.
*
* @this {RAMPDP11}
* @return {Object}
*/
RAMPDP11.prototype.save = function()
{
return null;
};
/**
* restore(data)
*
* This implements restore support for the RAMPDP11 component.
*
* @this {RAMPDP11}
* @param {Object} data
* @return {boolean} true if successful, false if failure
*/
RAMPDP11.prototype.restore = function(data)
{
return true;
/*
* If you want to zero RAM on reset, then this would be a good place to do it.
*/
};
/**