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From: dbush <dbush.mobile@gmail.com>
Newsgroups: comp.theory
Subject: Re: DD correctly emulated by HHH --- Totally ignoring invalid
 rebuttals ---PSR---
Date: Sat, 8 Mar 2025 22:45:23 -0500
Organization: A noiseless patient Spider
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In-Reply-To: <vqj2it$ef0h$6@dont-email.me>

On 3/8/2025 10:40 PM, olcott wrote:
> On 3/8/2025 9:24 PM, dbush wrote:
>> On 3/8/2025 10:20 PM, olcott wrote:
>>>
>>> *WHEN YOU UNDERSTAND THIS THEN YOU KNOW YOU WERE WRONG*
>>> Replacing the code of HHH with an unconditional simulator and 
>>> subsequently running HHH(DD) cannot possibly reach
>>> its own "ret" instruction and terminate normally
>>> because DD calls HHH(DD) in recursive emulation.
>>>
>>
>> And when that code is not replaced HHH does a partial simulation of a 
>> computation that halts, as demonstrated by DD halting when executed 
>> directly.
> 
> That Straw-man deception looks ridiculously stupid
> when I challenge you to provide the line-by-line
> machine code addresses of Replacing the code of HHH with an unconditional simulator and 
> subsequently running HHH(DD)
  such that DD reaches its own "ret" instruction
> and terminates normally.
> 
> _DD()
> [00002133] 55         push ebp      ; housekeeping
> [00002134] 8bec       mov ebp,esp   ; housekeeping
> [00002136] 51         push ecx      ; make space for local
> [00002137] 6833210000 push 00002133 ; push DD
> [0000213c] e882f4ffff call 000015c3 ; call HHH(DD)
> [00002141] 83c404     add esp,+04
> [00002144] 8945fc     mov [ebp-04],eax
> [00002147] 837dfc00   cmp dword [ebp-04],+00
> [0000214b] 7402       jz 0000214f
> [0000214d] ebfe       jmp 0000214d
> [0000214f] 8b45fc     mov eax,[ebp-04]
> [00002152] 8be5       mov esp,ebp
> [00002154] 5d         pop ebp
> [00002155] c3         ret
> Size in bytes:(0035) [00002155]
> 


Obviously when the code of HHH is replaced with an unconditional 
simulator then DD will not halt.  But without that replacement, HHH does 
a partial simulation of a halting computation, as demonstrated by DD 
halting when executed directly.