PW>Does anyone know what happens when the CPU comes across an opcode that it
PW>doesn't understand?  For example, what happens if a 386 tries to run a 486
or
PW>a Pentium opcode?
On a 286 or above, an Int 06h is generated ("Invalid Opcode" interrupt), and
this interrupt can be redirected to a routine to emulate the opcode.
Similarly, floating point emulators can run off of Int 07h...
((Cloud))
MauveCloud@juno.com
 * OLX 2.2 * "Cashew?"  "Gesundheit!"
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