Questions tagged [x86]

In computing, x86 is the generic name given to the family (architecture) processors based on Intel 8086 by Intel Corporation.

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ts_calibrate not found android X86

After following a few guides (Androidx86 touch screen not working. I have no idea what to do) I am able to create the folder but no calibration. This is the kitkat version. Other version all have the ...
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2answers
105 views

Why 32-bit Windows can maximum have 16TB Page File?

According to Microsoft, the page file sizes of 64-bit and 32-bit Windows are 256TB and 16TB respectively. In 64-bit, the virtual address looks like this: With 4 levels of 9-bit memory mapping fields ...
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Extract specific arch and version of apk from play store

I would like to download an apk from the playstore. I own the app, and am enrolled in the beta program for it. The problem is, I need an x86 beta version of the app. Searching around is hard, given ...
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1answer
40 views

The relationship between POST and BIOS after power-on

During a discussion, I was told that the POST was part of the BIOS, and so, it is the responsibility of the BIOS to set up everything (self tests and all) I was reading the intel manual... http://...
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Can a 64-bit computer (x86) run a 16-bit OS natively, without emulation?

If you were to build a modern x86 computer with completely modern parts, could you load MS-DOS 6.11 and Windows 3.11 onto it without any emulation or even with FreeDOS? I recently saw a video of it ...
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Kubernetes for i386 - Can't find binaries, can't compile (compile errors)

I'm currently building a cluster with a small 64-bit computer and some 32-bit laptops. The 64-bit works fine with Kubernetes, but I cannot install/compile Kubernetes on the 32-bit machines. 64-bit ...
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2answers
104 views

Why is there a loss in processor power emulating 32bit programs on a 64bit system?

May be a stupid question but I cannot find a clear answer. Host CPU=Emulated CPU Pentium Pro 200 MHz = 286 6 MHz Pentium II 350 MHz = 386SX 25 MHz Pentium III 1.0 GHz = 486 66 MHz Pentium ...
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1answer
112 views

I want to install executable of amd64 (x86) architecture on ARM architecture

I have just installed software (LabView linux supported version) on my laptop and its working fine. Recently I installed it on ARM cortex-A9 processor (zynq 7z020) and successfully installed all ...
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1answer
57 views

Shuttle XH61V / i7: 64b windows supported?

I am confused . I have a - Shuttle XH61V V1.1 - Intel i7-3770 - chipset Intel 6 series/C200 I mistakenly installed 32bit Win7. I would like to install 64bit Win7 but I am confused: - with this ...
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how the chromebook firmware and boot works?

I'm really confused of how works the BIOS, firmware, bootloader in the chromebook of different architecture because someone's says the chromebooks don't have BIOS, other says have a seaBIOS other says ...
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Why does old 16-bit Windows programs consume 100% of CPU in a x86 computer?

Some days ago, I felt a bit nostalgic and grabbed the good old Microsoft Entertainment Pack from some site. The package has some cool games that were designed for Windows 3.1 and they are 16-bit ...
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Writing MBR bootstrap code as a UEFI bootloader

I'm really interested in retrocomputing, and as I was looking for a so-called "pure" version of AT&T UNIX v7 I came across this port to the x86 architecture called v7/x86. It seemed interesting, ...
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545 views

Is it possible to get the x86 assembly code for the entire Linux kernel? [closed]

I want to see the x86-assembly of the Linux kernel and want to edit the kernel at assembly level. Is it possible to do so? If yes please help me to get the x86-assembly of the entire Linux kernel.
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Why do VirtualBox guest kernels run in ring 1 instead of ring 3?

When VirtualBox runs on an x86 platform, according to the documentation: When hardware virtualization (i.e. VT-x or AMD-V) is enabled , the hypervisor (i.e. VirtualBox itself) runs in VMX root mode (...
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1answer
406 views

Can you run Kali Linux 32bit debian on a lenovo thinkpad?

Can you run Kali Linux 32bit Debian on a Lenovo ThinkPad Is it possible to run the full Kali Linux on a Lenovo Thinkpad from 2017 If so then I would certainly appreciate it by you explaining how to ...
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1answer
160 views

How does a modern x86 CPU access the BIOS ROM

I know that modern x86 chips start-up in 32-bit mode and begin executing code at 0xFFFFFFF0 (the last 16 bytes of a 32-bit address space). Usually, the contents of the BIOS firmware are memory-mapped ...
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Does VMX Root and VMX Non-root Ring 0 enjoy same hardware privilege?

I have found following figure from a paper (Intel SGX Explained). According to this, VMX Root Ring 0 hypervisor enjoy more privilege than VMX Non-root Ring 0 OS Kernel. My question is: other than VMX-...
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1answer
69 views

Win 10 - 32 bit VM on a win 10 64 bit GPT disk system

I have a win 10 pro x64 system running a GPT HDD. GPT mandates 64 bit systems and a win 32 bit system cannot exist in the presence of GPT disks. I want to run a win 10 pro 32 bit system in a VM such ...
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What is stored in Inte's spi flash? Is it a BOIS?

We have Intel's board (i7) with Linux, and we need to save some data between power off/on. I thought of using the spi flash for this (there is also eeprom, but for some reason it is read-only!). But ...
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2answers
589 views

How to get a BareMetal x86-64 machine [closed]

I know there is RaspberryPI for bare-metal ARM, but wondering if there is an x86-64 machine in which either (a) it has no operating system preinstalled installed, or (b) you can uninstall the ...
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209 views

.NET Framework programs throws error 0xc000007b [duplicate]

When I run any .NET based program it throws the error 0xc000007b: Things that I've tried Formatting & Reinstalling: Works but after a short time period it occurs again. Other Windows ...
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Windows 7 doesn't install updates

I install all updates and the last one is KB4093118. When I check it to select it for installation, the windows shutdown changes like into shutdown to install updates. These are not really linked that ...
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1answer
404 views

Are VIA x86 CPU's affected by Meltdown and Spectre?

Every article and website I've seen, including the official Meltdown research page only talk about Intel, AMD, ARM, and even a couple articles about PowerPC chips being affected by the Meltdown and ...
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1answer
467 views

What types of x86 and x86-64 Windows software will not run on ARM-powered “Always Connected” Windows 10 PCs?

Some PC manufacturers have announced Qualcomm Snapdragon 835-powered "Always Connected" PCs running an ARM version of Windows 10 S. Users will be able to upgrade to an ARM version of Windows 10 Pro, ...
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195 views

On Windows (x86), how is the PFN database indexed?

Windows Internals has a section on virtual memory. I understand that the PFN fields in L4 entries, PDPEs, and PDEs refer to the base address of the next level tables, and that the PTE's PFN refers to ...
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1answer
154 views

automatic conversion of endianness

I have two little endian system while transferring data between them it happens in network byte order i.e, big endian but still i receive data properly. Does it mean that, the compiler automatically ...
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2answers
7k views

Can Intel microcode updates be rolled back?

Let's say I apply (or have applied for me by an automatic update process) a microcode update which fixes, for example, a hyperthreading bug on my Skylake chip. Are such updates irreversible, or can I ...
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168 views

x86/amd64 architecture Malware on ARM architecture malware Detonation

Situation: Thinking of making a malware detonator using an ARM single board computer, which has a file scanner in it. Problem: I am scanning computers (x86 and/or amd64), therefore malwares will be ...
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526 views

Emulate Raspberry Pi architecture on a personal computer

Is there a way to create a virtual ARM architecture machine so that I could create Raspberry Pi images on my PC? For instance, I would like to create an Ubuntu Server 17.04 image that I could burn to ...
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1answer
14k views

Can VirtualBox run operating systems designed for ARM processors? [duplicate]

For example, can I run Android, which is mostly run on ARM processors, run on VirtualBox on x86 Intel processors? I am aware of Android x86, however, that is not a viable solution.
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CentOS i686 virtualization

I am 100% newbie to unix, so my question is quite simple, although very important to me :-) I need to install a software that runs on CentOS with i386 architecture. Since I do not have CentOS on my ...
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263 views

X86 Address Space Controller?

I understand that on x86, certain ranges of physical memory addresses are mapped to the BIOS, others to RAM and yet others to I/O devices. I would like to know which hardware component is ...
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1answer
304 views

Why adding 4 “zero” bits (0000) to the end of the segment register address to get segment address in physical memory? [closed]

Why, do we have to find an address in memory in which there is 20 bits free space which have 16 bits for segment register and 4 "Zero" bits? Like, if the CS register is 346AH, the code segment in ...
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3answers
771 views

Share an old 32-bit printer with a 64-bit OS

I've got quite a bit of trouble setting up something which I honestly thought would have been easier. I'm setting up a new PC for a family member (please, no jokes on this, this subject itself is as ...
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1answer
74 views

Is there a term which unambiguously refers to both the 32-bit and 64-bit 8086-family ISAs?

Wikipedia uses x86 to refer to both the 32-bit and 64-bit "instruction set architectures based on the Intel 8086 CPU" (8086-family ISAs). However, often x86 is used specifically to mean 32-bit (e.g. ...
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Performance-impact of Hyper-Threading

I just read an article on Heise Online (look at the table, the rest is German) which claimed, that Hyper-Threading slows down single-threaded programs although they don't use the second thread of a ...
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New versions of TeamSpeak on ARM (Raspberry Pi) using QEMU user mode crash

With a help of a friend we have successfully run TeamSpeak server which has no source code and no binary for armhf on raspberry pi 3 using QEMU in user mode. We followed partially this guide: https://...
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1answer
1k views

Error 0xc000007b on all x86 games and apps [duplicate]

Some time ago, some of my games were not working because of this error called 0xc000007b. After following a bad tutorial, my computer's System32 folder ended up with some files mixed up (I checked ...
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1answer
143 views

Why a program written in the Intel assembly language cannot be executed on the PowerPC processor?

Assembly language instructions are native to the processor used in the system. For example, a program written in the Intel assembly language cannot be executed on the PowerPC processor. I am unable ...
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326 views

How are the CPU-modes applied? (x86)

The normal operating mode of the CPU is the Protected Mode. It still starts in Real-mode for backwards compatibility reasons. Real mode, also called real address mode, is an operating mode of all ...
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2answers
430 views

win10 32bit on x86-64

I currently have an laptop running Linux, and I'm considering dual-booting to Windows 10. I try to decide whether to take 32bit or 64bit OS. If I understood correctly, 64bit Windows might be better ...
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8answers
12k views

Did Windows ever support any hardware architectures other than x86?

Microsoft Windows Internals, 4th Edition says: The architecture of the Intel x86 processor defines four privilege levels, or rings, to protect system code and data from being overwritten either ...
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3answers
7k views

How do I install AmigaOS 4.1 on a standard x86 system?

The AmigaOS may just be remembered as an operating system from the 80's and 90's, but it is still alive, and has evolved into a modern OS, the latest release being 4.1 in Dec. 2014, with a modern UI ...
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863 views

Solaris x86 downgrade NVIDIA driver

I had to reinstall Solaris/x86 11 and in the process upgraded to version 11.3 from 11.1 on the same machine. The NVIDIA drivers were also updated, but there is a message during X startup that the ...
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118 views

Are popular benchmarks valid comparisons of architectures?

Recently, people have been very excited over Apple's ARM processor capabilities, citing benchmarks results that rival x86 processors. However, I am kind of skeptical of these benchmarks: though the ...
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1answer
416 views

Where are hardware interrupt handlers stored?

I've been doing some research on interrupts and it seems that pointers to software interrupt handlers are located in the first 1024 bytes of memory. I haven't been able to find anything about the ...
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239 views

How does an x86 processor recover from S2/S3 sleep?

I was reading through this page on how sleep states work in Windows and I was intrigued by the reset vector. My current understanding is that; When the system is in S2/S3, the processor is fully ...
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1answer
8k views

What does Windows 10 Setup do when installing “both” x86 and x64 architectures?

On a Running 64 bit programs on a 32 bit system answer there's this screenshot: What does the installer do if you select Both as architecture? I don' think there's any way of having a both x86 and ...
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1answer
2k views

What is purpose of clock in CPU

What is the function of the clock signal. I think that when Clock Signal arrives it tells the CPU to make next step (Because each instruction is processed in sequence of microistruction) Example: ...
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1answer
144 views

Latency semantics of read registers on x86 ASM

Per A. Fog's instruction tables, an Ivy Bridge has a 3 cycle latency on a MOV instruction. So the following will take 3 cycles to move RAX into the address in RCX: mov [rcx], rax My ...