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Fixed the evaluation of register operands for the XOR opcode (this slipped through the cracks, since it doesn't use readSrcWord())

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Jeff Parsons 2016-11-20 13:45:08 -08:00 • committed by Jeff Parsons
commit 48047c4a60
5 changed files with 61 additions and 12 deletions
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9
modules/pdp11/lib/cpustate.js
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@ -1352,9 +1352,10 @@ CPUStatePDP11.prototype.trap = function(vector, flag, reason)
this.setPC(newPC);
/*
* DEC's "TRAP TEST" triggers a RESERVED trap with an invalid opcode and the stack deliberately
* set too low, and expects the stack overflow trap to be "sprung" immediately afterward, so we
* only want to "lose interest" in the TRAP flag(s) that were set on entry, not ALL of them.
* DEC's "TRAP TEST" (MAINDEC-11-D0NA-PB) triggers a RESERVED trap with an invalid opcode and the
* stack deliberately set too low, and expects the stack overflow trap to be "sprung" immediately
* afterward, so we only want to "lose interest" in the TRAP flag(s) that were set on entry, not ALL
* of them.
*
* this.opFlags &= ~PDP11.OPFLAG.TRAP_MASK; // lose interest in traps after an abort
*
@ -2227,7 +2228,7 @@ CPUStatePDP11.prototype.readSrcByte = function(opCode)
* been decoded and any pre-decrement or post-increment operations affecting the SRC register have
* been completed.
*
* Here's an example from DEC's "TRAP TEST":
* Here's an example from DEC's "TRAP TEST" (MAINDEC-11-D0NA-PB):
*
* 007200: 012700 006340 MOV #6340,R0
* 007204: 010020 MOV R0,(R0)+