Ken Shirriff's Blog
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How to multiply currents: Inside a counterfeit analog multiplier.hilite {cursor:zoom-in} A recent Twitter thread about a counterfeit analog multiplier chip attracted my attention since I'm interested...
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HP Nanoprocessor part II: Reverse-engineering the circuits from the masks.hilite {cursor:zoom-in} In 1974, Hewlett-Packard developed a microprocessor for control applications in their products, from floppy disk...
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Reverse-engineering the first FPGA chip, the XC2064.hilite {cursor:zoom-in} A Field-Programmable Gate Array (FPGA) can implement arbitrary digital logic, anything from a microprocessor to a...
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Inside the HP Nanoprocessor: a high-speed processor that can't even add.hilite {cursor:zoom-in} The Nanoprocessor is a mostly-forgotten processor developed by Hewlett-Packard in 1974 1 as a microcontroller...
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Reverse-engineering the 8086's Arithmetic/Logic Unit from die photos.hilite {cursor:zoom-in} code {font-size: 90%;} The Intel 8086 processor was introduced in 1978, setting the course of modern computing....
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Inside a counterfeit 8086 processor.hilite {cursor:zoom-in} Intel introduced the 8086 processor in 1978, leading to the x86 architecture in use today. I'm currently...
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How the 8086 processor handles power and clock internally.hilite {cursor:zoom-in} One under-appreciated characteristic of early microprocessors is the difficulty of distributing power inside the...
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Latches inside: Reverse-engineering the Intel 8086's instruction register.hilite {cursor:zoom-in} The Intel 8086 microprocessor is one of the most influential chips ever created; it led to the x86 architecture...
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Reverse-engineering the adder inside the Intel 8086.hilite {cursor:zoom-in} The Intel 8086 processor contains many interesting components that can be understood through reverse engineering....
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Inside the 8086 processor, tiny charge pumps create a negative voltage.hilite {cursor:zoom-in} Introduced in 1978, the revolutionary Intel 8086 microprocessor led to the x86 processors used in most desktop and...
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The Intel 8086 processor's registers: from chip to transistors.hilite {cursor:zoom-in} The Intel 8086 microprocessor is one of the most influential chips ever created; it led to the x86 architecture...
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Die shrink: How Intel scaled down the 8086 processor.hilite {cursor:zoom-in} The revolutionary Intel 8086 microprocessor was introduced 42 years ago this month 7 so I've been studying its...
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Reverse-engineering and comparing two Game Boy audio amplifier chips.hilite {cursor:zoom-in} The Nintendo Game Boy contains an audio amplifier chip for sound through a speaker or headphones. In this post, I...
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A look at the die of the 8086 processor.hilite {cursor:zoom-in} The Intel 8086 microprocessor was introduced 42 years ago this month, 1 so I made some high-res die photos of...
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Die analysis of the 8087 math coprocessor's fast bit shifter.hilite {cursor:zoom-in} Floating-point numbers are very useful for scientific programming, but early microprocessors only supported...
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Why traders are not worried that the KuCoin hack will drop Ethereum priceAfter the $150 million KuCoin hack, traders appear unworried that open market sales by the hacker will drop Ethereum price.
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EY Releases Enterprise Procurement Solution on Ethereum BlockchainThe consultancy giant has released a new solution aimed to streamline enterprise resource planning on the public Ethereum blockchain.
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Bitcoin Weekly Outlook: Is BTC/USD About To Surge Higher?Bitcoin was able to pare a significant portion of the losses it incurred last week due to a strengthening dollar sentiment. And now, the...
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Trump, tax and hacks: 5 things shaping Bitcoin price action this weekBitcoin tests $11,000 on Donald Trump’s tax revelations but KuCoin’s $150 million may yet put a dampener on bulls.
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EY launches Ethereum-based procurement solution for enterprises“Big Four” accounting firm Ernst & Young (EY) has launched an Ethereum-based procurement solution for enterprises. Dubbed EY OpsChain...
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The Role of the TRON Blockchain in Powering the Success of the JSB FoundationJustin Sun, Born on July 10, 1990, is the man who founded the TRON Blockchain. He is also the current CEO of BitTorrent and a former...
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Bitcoin Sets Record 63 Straight Days Closing Above $10,000Bitcoin has closed above $10,000 since July 27.
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Algorand is committed is building solutions for the future of economic exchangeSteve Kokinos is the CEO at Algorand. Algorand is an open, permissionless, pure proof-of-stake blockchain protocol that wants to usher in a new era...
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Fresh Armenia-Azerbaijan clashes over disputed region – UN chief urges ‘stop fighting’The UN chief is “extremely concerned” over hostilities between Armenia and Azerbaijan in the Nagorno-Karabakh conflict zone that erupted on Sunday.
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Crypto Market Forecast: W/C 28 September 2020A curated weekly summary of forward-focused crypto news that matters. This week -a major hack at the Kucoin exchange, Grayscale Investments buys...
