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Added placeholders for IBTS and XBTS (80386 opcodes on A0-B0 steppings only)

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This commit is contained in:
Jeff Parsons 2015-10-29 22:44:33 -07:00
commit 8bd1794928
7 changed files with 139 additions and 75 deletions
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11
modules/pcjs/lib/x86cpu.js
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@ -110,8 +110,13 @@ function X86CPU(parmsCPU)
{
this.model = parmsCPU['model'] || X86.MODEL_8088;
/*
* We take the 'stepping' value, convert it to a hex value, and then add that to the model to provide
* a single value that's unique for any given CPU stepping. If no stepping is provided, then stepping
* is equal to model.
*/
var stepping = parmsCPU['stepping'];
this.stepping = (stepping? str.parseInt(stepping, 16) : 0);
this.stepping = this.model + (stepping? str.parseInt(stepping, 16) : 0);
var nCyclesDefault = 0;
switch(this.model) {
@ -812,6 +817,10 @@ X86CPU.prototype.initProcessor = function()
for (bOpcode in X86.aOps0F386) {
this.aOps0F[+bOpcode] = X86.aOps0F386[bOpcode];
}
if (this.stepping >= X86.STEPPING_80386_A0 && this.stepping <= X86.STEPPING_80386_B0) {
this.aOps0F[0xA6] = X86.opXBTS;
this.aOps0F[0xA7] = X86.opIBTS;
}
}
}
}