Questions tagged [x86]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
33 views

Memory segmentation in 8086 microprocessor

I have just started reading a book about 8086 microprocessor assembly and the inner parts of a computer. In the chapter about memory, I read that in order to bridge the gap between the 20 bit address ...
user avatar
  • 101
0 votes
0 answers
14 views

Why does Bochs x86 emulator use I/O ports 0e9h and 08a00h for debugging?

The Bochs x86 emulator can be configured to print every byte that arrives to the port e9hex to its console. Also, the port 8a00hex is used to enter its internal debugger. I understand that the choice ...
user avatar
  • 239
0 votes
3 answers
1k views

Can I emulate/virtualize Windows x86 in Apple ARM CPUs?

I have a Windows software that only runs in Windows x86 and my current computer has an Apple ARM M1 CPU. I can virtualize Windows 11 using ARM image in Parallels however, the software crashes. Is ...
user avatar
  • 101
0 votes
0 answers
86 views

Zoom Desktop is not working using in Docker installed in Apple Silicon M1

I'm having different issues when I try to run Zoom Desktop in Docker using a Apple Silicon M1. Steps: Deploying docker with docker build . -t test --platform linux/amd64 [install a bunch of other ...
user avatar
  • 101
0 votes
0 answers
61 views

0.39 ghz laptop CPU [duplicate]

Almost everytime I open my laptop and it wakes from sleep, the cpu clock is stuck at 0.39 ghz and I always have to wait for around 30 seconds for it to return to normal. I have a very good Asus laptop ...
user avatar
1 vote
0 answers
62 views

Can different active cores of a desktop Intel x86 CPU run at different frequencies at the same time?

According to FAQ for Intel® Turbo Boost Technology, the turbo frequency is the same for all active cores. Intel's 8th and 9th Gen Datasheet, Volume 1 (PDF) also mentions that: All active processor IA ...
user avatar
  • 123
1 vote
1 answer
126 views

Wine-5.13: 0050:fixme:explorer:webbrowser_QueryInterface (...) interface not supported

When running Discord with Wine, the following errors occur: 00e0:fixme:ntdll:NtQueryInformationToken QueryInformationToken( ..., TokenElevationType, ...) semi-stub 00e0:fixme:ieframe:DllGetClassObject ...
user avatar
0 votes
2 answers
327 views

How to burn a boot loader onto a USB drive (boot-loader as a .bin)

I have created a very small boot loader in assembly and am wanting to test it on my physical hardware and so I am using a USB drive to do this. I have converted the assembly to machine code and to a ....
user avatar
0 votes
0 answers
21 views

What is the Difference Between 1Ghz Mobile Processor and 1Gzh Pc pocessor? [duplicate]

What is the difference between a 1Ghz ARM mobile processor and a 1Ghz x86 processor?. I mean both are 1Ghz right. Then how is it differs in performance other than the architecture?. why if we compile ...
user avatar
1 vote
1 answer
88 views

Why aren't CPU instructions decoded before the program runs?

What is it about the decoding step of the instruction cycle that prevents it from being done ahead of time? The Intel 64 manual says things like "decodes instructions into micro-operations". ...
user avatar
0 votes
0 answers
865 views

Is there a 32-bit ARM version of Windows that can run x86 applications?

Windows 10 can run on 64-bit ARM CPUs. The operating system's %PROCESSOR_ARCHITECTURE% environment variable shows ARM64 - meaning that its a 64-bit operating system running on ARM. This operating ...
user avatar
1 vote
3 answers
310 views

Why some supercomputers use ARM processors?

Why some supercomputers use ARM cpus? For example the world's most powerful supercomputer: Fugaku. It uses ARM cpus. x86 cpus can process more complex stuff right?
user avatar
0 votes
1 answer
111 views

Coreinfo - difference between the PREFETCHW and 3DNOW

After reading the about 3DNOW instruction set extension, I found that prefetchw is one of 3DNOW's instructions.   I wanted to know if my CPU supports the instruction PREFETCHW, I ran coreinfo and got ...
user avatar
0 votes
0 answers
177 views

Old Intel Pentium PC: am I an i586? Does Gentoo provide i586 packages? What else am I compatible with? [duplicate]

Greetings Super Users! I've recently commenced revitalizing a very old PC. She's running an Intel Pentium, x86_64. I thought I'd give Gentoo a go because I've found it very appealing and as a Bedrock ...
user avatar
  • 113
0 votes
1 answer
906 views

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 ...
user avatar
2 votes
2 answers
319 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 ...
user avatar
0 votes
0 answers
111 views

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 ...
user avatar
0 votes
1 answer
95 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://...
user avatar
40 votes
4 answers
10k views

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 ...
user avatar
  • 493
-3 votes
2 answers
152 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 ...
user avatar
  • 1
0 votes
2 answers
1k 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 ...
user avatar
1 vote
1 answer
79 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 ...
user avatar
  • 13
0 votes
0 answers
40 views

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 ...
user avatar
2 votes
0 answers
206 views

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 ...
user avatar
  • 121
1 vote
1 answer
119 views

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, ...
user avatar
-2 votes
2 answers
798 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.
user avatar
8 votes
2 answers
2k views

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 (...
user avatar
  • 271
-4 votes
1 answer
849 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 ...
user avatar
  • 1
2 votes
1 answer
325 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 ...
user avatar
  • 121
1 vote
0 answers
169 views

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-...
user avatar
1 vote
1 answer
192 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 ...
user avatar
1 vote
0 answers
112 views

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 ...
user avatar
  • 231
0 votes
2 answers
921 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 ...
user avatar
0 votes
2 answers
2k views

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 ...
user avatar
  • 1,591
0 votes
1 answer
439 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 ...
user avatar
0 votes
1 answer
781 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, ...
user avatar
3 votes
1 answer
611 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 ...
user avatar
  • 157
0 votes
1 answer
238 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 ...
user avatar
  • 15
7 votes
2 answers
9k 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 ...
user avatar
  • 1,012
0 votes
0 answers
208 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 ...
user avatar
3 votes
0 answers
633 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 ...
user avatar
  • 634
6 votes
1 answer
17k 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.
user avatar
0 votes
1 answer
268 views

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 ...
user avatar
8 votes
1 answer
641 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 ...
user avatar
  • 237
1 vote
1 answer
487 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 ...
user avatar
  • 113
0 votes
3 answers
1k 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 ...
user avatar
  • 383
-1 votes
1 answer
77 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. ...
user avatar
8 votes
4 answers
22k views

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 ...
user avatar
1 vote
0 answers
2k views

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://...
user avatar
-3 votes
1 answer
2k 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 ...
user avatar
  • 1