Dietmar
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Posts posted by Dietmar
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Not really. I have only 256 KB Cache Ram chips. With this, I can use with "Write Through" only 64 MB from the 256 installed MB.
This you can see in Task Manager. XP shows the full 256 MB, but now uses only the cached 64MB from it.
I order from China 1024 KB Cache chips for few Euro, but they arrive here only in May
Dietmar
PS: I notice a funny behavior: When I make a first try to install XP SP3 on a 486 cpu, this works but later I get a message,
that "NULL" was not found, but the 486 compi works. Via this way, in "System" no entry for cpu or ram.
But when I use the install from my Asrock z370 k6 board, it shows the correct ram and also the correct 100MHZ 486 cpu from AMD.
And I notice, that there exists at least 2 different IDE controller for the Shuttle Hot 433 board, vers. 1..3.
They are NOT compatible. One uses ESDI IDE(???) and the other the normal IDE.
So, I can not make a generic XP SP3 here for all of them for download, because I have only one harddisk with 8.4 GB
and so everything for this needs to be done at least 2 times.
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This works nice as much as possible.
With this Emulator, XP SP3 on any 486 cpu is now real.
I played Pin ball and just now I am installing there Moorhuhn
Dietmar
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Yessaaaa
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now the simulation of cmpxchg8b is much better, here in ntoskrnl.exe
Dietmar
New ntoskrnl.exe for 486 compi
.data:004762F2 ; Exported entry 8. ExInterlockedPopEntrySList .data:004762F2 ; Exported entry 36. InterlockedPopEntrySList .data:004762F2 .data:004762F2 ; =============== S U B R O U T I N E ======================================= .data:004762F2 .data:004762F2 .data:004762F2 public ExInterlockedPopEntrySList .data:004762F2 ExInterlockedPopEntrySList proc near ; CODE XREF: sub_40E06D+1DAp .data:004762F2 ; sub_41159B+8Ap ... .data:004762F2 push ebx ; ExInterlockedPopEntrySList .data:004762F3 push ebp .data:004762F4 mov ebp, ecx .data:004762F6 .data:004762F6 loc_4762F6: ; DATA XREF: .text:loc_40A835o .data:004762F6 ; KiDeliverApc+12o .data:004762F6 mov edx, [ebp+4] .data:004762F9 mov eax, [ebp+0] .data:004762FC .data:004762FC loc_4762FC: ; CODE XREF: ExInterlockedPopEntrySList+18j .data:004762FC ; ExInterlockedPopEntrySList+23j .data:004762FC or eax, eax .data:004762FE jz short loc_476317 .data:00476300 lea ecx, [edx-1] .data:00476303 .data:00476303 loc_476303: ; DATA XREF: sub_40A552:loc_40A55Bo .data:00476303 ; .text:loc_40A747o .data:00476303 mov ebx, [eax] .data:00476305 .data:00476305 loc_476305: ; DATA XREF: KiDeliverApc+1Bo .data:00476305 lock cmpxchg [ebp+0], ebx .data:0047630A jnz short loc_4762FC .data:0047630C push eax .data:0047630D mov eax, edx .data:0047630F lock cmpxchg [ebp+4], ecx .data:00476314 pop eax .data:00476315 jnz short loc_4762FC .data:00476317 .data:00476317 loc_476317: ; CODE XREF: ExInterlockedPopEntrySList+Cj .data:00476317 pop ebp .data:00476318 pop ebx .data:00476319 nop .data:0047631A nop .data:0047631B nop .data:0047631C nop .data:0047631D nop .data:0047631E nop .data:0047631F retn .data:0047631F ExInterlockedPopEntrySList endp .data:0047631F .data:0047631F ; ---------------------------------------------------------------------------0 -
On my Asrock z370 k6 board with 8700k cpu all my files without any cmpxchg8b are stable.
But this is not the case for the 486 cpu.
Strange.
I think, it depends only on the simulation of cmpxchg8b in ntoskrnl.exe in the function ExInterlockedPopEntrySList.
But I dont have a better idea until now for this simulation of cmpxchg8b there
Dietmar
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Here are 2 photos of my Shuttle Hot 433 board, with running full XP SP3 on it.
I notice, that even from version 1...3 of this board, they have different IDE controllers, so you cant switch from one board to next with the same XP SP3 installation. This strange behavior I have never seen for any IDE controller before.Next step is to build an full Setup XP486.iso.
I make a try, to overcome also there the crazy opcode cmpxchg8b and also the "Unknown Processor" hurdle.
Any help is welcome, which files on the xp.iso have to be changed, for to kick out those checks.
It is not so much difficult I think.
My files without any cmpxchg8b are quite stable, anyway I will update them and I also make an english version
Dietmar
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Hi,
does somebody know, where the question about cmpxchg8b "is there" in the XP.iso happens during Setup?
And also the same for CPUID. May be, we can take a look at the XP SP1 source files for this question.
I do a check, why my XP SP3 was so slow on the Shuttle Hot 433 board with AM486DX4-S cpu with 100 MHZ.
Oh, XP SP3 gets only 32 MB from the 256 MB installed memory, I think, because of only 256k Cache.
And half of memory because of "write-back" whatever this means for Cache^^..
(should be full memory with Cache settings to write-through)
So lets have some more fun with an install xp.iso for 486 cpu, 256 MB ram at 180 MHZ
Dietmar
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Yesssssaaa
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I got it,
XP SP3 on my Shuttle Hot 433 board and AMD 100MHZ 486 cpu
Dietmar
PS: Boot time to desktop is about 2 min.
Via F8 you have to enable VGA modus.
New ntoskrnl.exe with modd from @roytam1
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Windbg session in that x86 box?
1.) Very early Bsod 0x0000005D, (unknown processor), no running bar of XP.
2.) My serial connection does not work for this board.
May be, because it does not use the standard configuration 0x3F8, IRQ 4 for the COM1 port.
Dietmar
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Until now I do not succeed to set up a Windbg session on my 486 board for XP SP3.
May be, that the address of the COM1 port does not match?
And I start to think, that not the CPUID of the 486 cpu is the reason for crash
Dietmar
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I think, I get reboot of my modded XP SP3,
because of CPUID check in ntoskrnl.exe, opcode 0F A2.
Do you know, how to fake this,
Dietmar
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Yes, it is a problem, how the harddisk is formatted.
Use RMPrepUSB for this with settings ntldr, ntfs, force LBA
Dietmar
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Here is the for now last modded and tested file for 486 compi
Dietmar
oledb32.dll
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Here is the file, which I thought before, it was only in Cache, but mistaken. Works now, has to be added:
Programme\Gemeinsame Dateien\System\Ole DB\msdatl3.dll for 486 cpu
Dietmar
msdatl3.dll
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Now, its time for the last one, working wmvcore.dll
without any lock cmpxchg8b qword ptr [esi]
Dietmar
wmvcore.dll
Whole fun
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Here is working txflog.dll, now without any lock cmpxchg8b qword ptr [esi]
Dietmar
txflog.dll
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Hi, I test all 3. None works.
duser.dll_EN_5patchandchecksum_virtsizechange BSOD very early, no running bar
duser.dll_EN_5patchandchecksum_virtsizechange_rebuildPEheader asks for Password, Device Manager not working
duser.dll_EN_5patchandchecksum_virtsizechange_rebuildsize asks for Password, Device Manager not working
Wish you a nice day
Dietmar
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And here is msdtctm.dll, also now without any lock cmpxchg8b qword ptr [esi].
Tested, working
Dietmar
msdtctm.dll
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First modd in msdart.dll works,
now still 7 to do there
Dietmar
Here it is, working and tested, what crazy job
msdart.dll
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Here comes modded comsvcs.dll without any lock cmpxchg8b qword ptr [esi].
But I am not sure, if this modd is allowed. Even if it works,
please, can somebody look, if this is ok
Dietmar
comsvcs.dll
Original .text:761521C1 .text:761521C1 ; =============== S U B R O U T I N E ======================================= .text:761521C1 .text:761521C1 ; Attributes: bp-based frame .text:761521C1 .text:761521C1 sub_761521C1 proc near ; DATA XREF: .text:off_760A9CB4o .text:761521C1 .text:761521C1 arg_0 = dword ptr 8 .text:761521C1 arg_4 = dword ptr 0Ch .text:761521C1 arg_8 = dword ptr 10h .text:761521C1 arg_C = dword ptr 14h .text:761521C1 arg_10 = dword ptr 18h .text:761521C1 .text:761521C1 mov edi, edi .text:761521C3 push ebp .text:761521C4 mov ebp, esp .text:761521C6 push ebx .text:761521C7 push esi .text:761521C8 mov esi, [ebp+arg_0] .text:761521CB mov eax, [ebp+arg_C] .text:761521CE mov edx, [ebp+arg_10] .text:761521D1 mov ebx, [ebp+arg_4] .text:761521D4 mov ecx, [ebp+arg_8] .text:761521D7 lock cmpxchg8b qword ptr [esi] .text:761521DB pop esi .text:761521DC pop ebx .text:761521DD pop ebp .text:761521DE retn 14h .text:761521DE sub_761521C1 endp .text:761521DE .text:761521DE ; --------------------------------------------------------------------------- Modd .text:761521C1 ; =============== S U B R O U T I N E ======================================= .text:761521C1 .text:761521C1 ; Attributes: bp-based frame .text:761521C1 .text:761521C1 sub_761521C1 proc near ; DATA XREF: .text:off_760A9CB4o .text:761521C1 .text:761521C1 arg_0 = dword ptr 8 .text:761521C1 arg_4 = dword ptr 0Ch .text:761521C1 arg_8 = dword ptr 10h .text:761521C1 arg_C = dword ptr 14h .text:761521C1 arg_10 = dword ptr 18h .text:761521C1 .text:761521C1 mov edi, edi .text:761521C3 push ebp .text:761521C4 mov ebp, esp .text:761521C6 push ebx .text:761521C7 push esi .text:761521C8 mov esi, [ebp+arg_0] .text:761521CB mov eax, [ebp+arg_C] .text:761521CE mov edx, [ebp+arg_10] .text:761521D1 mov ebx, [ebp+arg_4] .text:761521D4 mov ecx, [ebp+arg_8] .text:761521D7 call sub_7617AB70 .text:761521DC pop ebx .text:761521DD pop ebp .text:761521DE retn 14h .text:761521DE sub_761521C1 endp ; sp-analysis failed .text:761521DE .text:761521DE ; --------------------------------------------------------------------------- .text:7617AB70 .text:7617AB70 ; =============== S U B R O U T I N E ======================================= .text:7617AB70 .text:7617AB70 .text:7617AB70 sub_7617AB70 proc near ; CODE XREF: sub_761521C1+16p .text:7617AB70 ; sub_7617AB70+4j .text:7617AB70 lock cmpxchg [esi], ebx .text:7617AB74 jnz short sub_7617AB70 .text:7617AB76 .text:7617AB76 loc_7617AB76: ; CODE XREF: sub_7617AB70+Fj .text:7617AB76 push eax .text:7617AB77 mov eax, edx .text:7617AB79 lock cmpxchg [esi+4], ecx .text:7617AB7E pop eax .text:7617AB7F jnz short loc_7617AB76 .text:7617AB81 pop esi .text:7617AB82 nop .text:7617AB83 nop .text:7617AB84 nop .text:7617AB85 nop .text:7617AB86 nop .text:7617AB87 nop .text:7617AB88 nop .text:7617AB89 nop .text:7617AB8A nop .text:7617AB8B nop .text:7617AB8C nop .text:7617AB8D nop .text:7617AB8E nop .text:7617AB8F retn .text:7617AB8F sub_7617AB70 endp ; sp-analysis failed .text:7617AB8F .text:7617AB8F ; ---------------------------------------------------------------------------0
..
XP running on a 486 cpu
in Windows XP
Posted · Edited by Dietmar
For to overcome my ultraslow IDE HD with 7 (!) MByte/s
I bought this adapter
https://www.amazon.de/gp/product/B00EOJNGC2?ref=ppx_pt2_dt_b_prod_image
So, from tomorrow starts fun, because this adapter works also with SSD and 6 Gbit/s
Dietmar