Continuing his reverse-engineering of the Intel 8087, [Ken Shirriff] covers the conditional tests that are implemented in the microcode of this floating point processing unit (FPU). This microcode ...

The CPU is a simple stack virtual machine with a specialized reduced instruction set. Execution algorithm: The VM fetches an opcode from system memory pointed by CS:IP. There is a table of instruction ...

Intel has released another round of firmware and driver updates, this time accompanied by 30 new security advisories. The microcode update, labeled version 20251111, covers nearly all recent Intel ...

AMD has addressed the latest issue regarding its Zen 5 CPUs’ behavior when it comes to the utilization of the RDSEED instruction in 16-bit and 32-bit applications. Discovered by a Meta engineer last ...

In his decades-long career in tech journalism, Dennis has written about nearly every type of hardware and software. He was a founding editor of Ziff Davis’ Computer Select in the 1990s, senior ...

Intel has confirmed that it's about to issue another microcode update for its 13th-gen and 14th-gen Raptor Lake CPUs, meaning you'll need to update your motherboard BIOS again. As with the raft of ...

This is a collection of Latest Production Intel, AMD, VIA and Freescale CPU microcodes. You can use MC Extractor to check instantly whether a microcode is already at the repository. Please report any ...

AMD has released mitigation and firmware updates to address a high-severity vulnerability that can be exploited to load malicious CPU microcode on unpatched devices. The security flaw (CVE-2024-56161) ...

A security vulnerability has been disclosed in AMD's Secure Encrypted Virtualization (SEV) that could permit an attacker to load a malicious CPU microcode under specific conditions. The flaw, tracked ...

AMD on Monday announced patches for a microprocessor vulnerability that could lead to loss of Secure Encrypted Virtualization (SEV) protection, allowing attackers to load malicious microcode. Tracked ...

When AMD finally issued patches for its critical microcode security hole on Monday, it said that the glitch 'could lead to the loss of Secure Encrypted Virtualization protection.' AMD on Monday issued ...