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<p class="MsoNormal">Not sure if you are interested but I found that simh fails test 14. (Running the tests on my own emu project and wondered if simh would pass all of these nasty tests too)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">007176: 010700 mov r7,r0 ; @.<o:p></o:p></p>
<p class="MsoNormal">007200: 012700 006340 mov #6340,r0 ; @.`.<o:p></o:p></p>
<p class="MsoNormal">007204: 010020 mov r0,(r0)+ ; ..<o:p></o:p></p>
<p class="MsoNormal">007206: 026727 177126 006342 cmp 6340,#6342 ; W-V~b.<o:p></o:p></p>
<p class="MsoNormal">007214: 001401 beq 7220 ; ..<o:p></o:p></p>
<p class="MsoNormal">007216: 000000 halt ; ..<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you don’t know these test the general layout is as follows<o:p></o:p></p>
<p class="MsoNormal">Load pc in r0 (presumably to identify the test if a halt occurs)<o:p></o:p></p>
<p class="MsoNormal">Run the test<o:p></o:p></p>
<p class="MsoNormal">Halt if fail<o:p></o:p></p>
<p class="MsoNormal">Next test<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Simh halts at 7220<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This test is verifying the behavior of using the contents of an auto increment register. IE exactly when does the register change value in the instruction flow<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mov r0,(r0)+<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Their test expects the value moved to DD to be the new value of R0. Ie the incremented register value is committed as soon as it is used to calculate the address<o:p></o:p></p>
<p class="MsoNormal">Simh(v4) (running as 11/05 not tried other models) moves the old value. Ie the register update is not processed until the instruction is complete<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">sim> e r0<o:p></o:p></p>
<p class="MsoNormal">R0: 006342<o:p></o:p></p>
<p class="MsoNormal">sim> e 6340<o:p></o:p></p>
<p class="MsoNormal">6340: 006340<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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