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 ...

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 ...

CPU manufacturers must address issues that arise with processors already on the market, especially the errors that are discovered over time. To handle this, Intel has released a new version of ...

Bottom line: Chipmakers typically use microcode updates to fix bugs and improve CPU reliability. However, this low-level layer between hardware and machine code can also serve as a stealthy attack ...

Intel has issued new firmware to further fix stability issues on 13th and 14th Gen desktop processors. The new update is said to have almost no performance impact. Back in August 2024, Intel confirmed ...

A hot potato: Users with 13th- and 14th-generation Intel desktop processors should begin checking for BIOS updates from their motherboard providers. A new microcode update fixes edge cases that can ...

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 ...

Sample, seen in 2013, came the Capital Region to study at the University at Albany, where he was accepted into the Educational Opportunity Program for students with financial need. He graduated magna ...

TL;DR: AMD has identified a security flaw, "EntrySign," affecting Zen 1 to Zen 5 CPUs, allowing attackers kernel-level access by bypassing microcode signature verification. A fix has been issued via ...

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) ...

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 ...