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Add 0x0F,0xFF to the ranks of invalid opcodes (as opposed to undefined)

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This commit is contained in:
Jeff Parsons 2015-07-16 14:10:23 -07:00
commit a6c418ff3f
3 changed files with 19 additions and 2 deletions
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modules/pcjs/lib/x86.js
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@ -230,7 +230,7 @@ var X86 = {
* Interrupts beyond 0x10 (up through 0x1F) are reserved for future exceptions.
*
* Implementation Detail: For any opcode we know must generate a UD_FAULT interrupt, we invoke opInvalid(),
* NOT opUndefined(). UD_FAULT is for INVALID opcodes, Intel's choice of "UD" notwithstanding.
* NOT opUndefined(). UD_FAULT is for INVALID opcodes, Intel's choice of term "undefined" notwithstanding.
*
* We reserve the term "undefined" for opcodes that require more investigation, and we invoke opUndefined()
* ONLY until an opcode's behavior has finally been defined, at which point it becomes either valid or invalid.