Video gamers know about cheat codes, but assembly language programmers are often in search of undocumented instructions. One way to find them is to map out all of a CPU’s opcodes and where there are ...

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Ben Eater and others use an instruction processing sub-cycle where a given op code is executed as a sequence of microcode instructions. My thoughts (Aug 2019) on microcoded instructions such as those ...

Video gamers know about cheat codes, but assembly language programmers are often in search of undocumented instructions. One way to find them is to map out all of a CPU’s opcodes and where there are ...

CPU microcode represents low-level instructions essential for the proper CPU functioning, acting as a bridge between the CPU’s architecture and the electronic circuits that execute instructions.

In the ever-evolving landscape of technology, hardware stability is paramount for ensuring optimal performance in computing systems. Recently, Intel, one of the world’s leading semiconductor ...

My understanding was that a CPU microcode update is stored in non-volatile memory on the motherboard and is loaded by the BIOS or UEFI into volatile memory on the CPU during boot. And because the ...

This repository contains the formal verification framework from here, which is used to verify the microcode of the Goldcrest-VP. The Goldcrest-VP is a RISC-V RV32I Virtual Prototype (VP) which uses a ...

Abstract: Microcode is a technique that is used to implement internal state machine sequencing in different type of controllers addressing a large range of different applications. It can be used to ...