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Now that PCjs supports specific steppings, set the reset revision number accordingly

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This commit is contained in:
Jeff Parsons 2015-10-30 08:29:08 -07:00
commit 4403f90b5d
3 changed files with 51 additions and 5 deletions
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21
modules/pcjs/lib/x86cpu.js
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@ -1064,7 +1064,26 @@ X86CPU.prototype.resetRegs = function()
this.setSS(0);
if (I386 && this.model >= X86.MODEL_80386) {
this.regEDX = 0x0304; // Intel errata sheets indicate this is what an 80386-C0 reported
/*
* Here lies everything I currently know about 80386 stepping revision numbers...
*/
switch(this.stepping) {
case X86.STEPPING_80386_B0:
case X86.STEPPING_80386_B1:
this.regEDX = 0x0303;
break;
case X86.STEPPING_80386_C0:
this.regEDX = 0x0304;
break;
case X86.STEPPING_80386_D0:
this.regEDX = 0x0305;
break;
case X86.STEPPING_80386_D1:
case X86.STEPPING_80386_D2:
default:
this.regEDX = 0x0308; // in the absence of a specific stepping, default to the highest known revision
break;
}
this.regCR0 = X86.CR0.ET; // formerly MSW
this.regCR1 = 0; // reserved
this.regCR2 = 0; // page fault linear address (PFLA)