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Wired up CR0 and CR3 to the new Bus paging functions

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This commit is contained in:
Jeff Parsons 2015-05-04 11:28:10 -07:00 • committed by jeffpar
commit e057bd7a05
6 changed files with 149 additions and 45 deletions
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8
modules/pcjs/lib/x86cpu.js
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@ -2379,10 +2379,10 @@ X86CPU.prototype.setMSW = function(w)
w |= (this.regCR0 & X86.CR0.MSW.PE) | X86.CR0.MSW.ON;
this.regCR0 = (this.regCR0 & ~X86.CR0.MSW.MASK) | (w & X86.CR0.MSW.MASK);
/*
* Since the 80286 cannot return to real-mode via this instruction, the only transition
* we must worry about is to protected-mode. And there's no harm calling setProtMode()
* if the CPU is already in protected-mode (we could certainly optimize the call out in that
* case, but this instruction isn't used frequently enough to warrant it).
* Since the 80286 cannot return to real-mode via this instruction, the only transition we
* must worry about is to protected-mode. And there's no harm calling setProtMode() if the
* CPU is already in protected-mode; we could certainly optimize out the call in that case,
* but the instruction isn't used frequently enough to warrant it.
*/
if (this.regCR0 & X86.CR0.MSW.PE) this.setProtMode(true);
};