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Articles

Motorola 68030 wire wrap prototype

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A bug fix in the 8086 microprocessor, revealed in the die's silicon

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HP Saturn

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Yamaha DX7 chip reverse-engineering, part 6: the control registers

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Yamaha DX7 chip reverse-engineering, part V: the output circuitry

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Yamaha DX7 reverse-engineering, part III: Inside the log-sine ROM

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Yamaha DX7 chip reverse-engineering, part 4: how algorithms are implemented

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The Yamaha DX7 synthesizer's clever exponential circuit, reverse-engineered

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A look at the die of the 8086 processor (2020)

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TROS: How IBM mainframes stored microcode in transformers (2019)

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Strange chip: Teardown of a vintage IBM token ring controller

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A one-bit processor explained: reverse-engineering the vintage MC14500B

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IBM paperweight teardown: Reverse-engineering 1970s memory chips

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Reverse engineering a forgotten 1970s Intel dual core beast: 8271, a new ISA

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Reverse-engineering the classic MK4116 16-kilobit DRAM chip

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Reverse-engineering the first FPGA chip, the XC2064

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How the 8086 processor handles power and clock internally

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Inside the 8086 processor, tiny charge pumps create a negative voltage

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A look at the die of the 8086 processor

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Die photos and analysis of the revolutionary 8008 microprocessor (2016)

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Extracting ROM constants from the 8087 math coprocessor's die

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Reverse engineering the 76477 “Space Invaders” sound chip from die photos (2017)

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Reverse-engineering the audio chip in the Nintendo Game Boy Color

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TROS: IBM mainframes stored microcode in transformers

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The vintage 74181 ALU chip: how it works and why it’s so strange (2017)

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A look at IBM S/360 core memory: In the 1960s, 128 kilobytes weighed 610 pounds

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Two bits per transistor: high-density ROM in Intel's 8087 floating point chip

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Turbo Button

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The mysterious heart of the Roland TR-808 drum machine

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Inside the 76477 Space Invaders sound effect chip

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IBM mainframe tube module part II: Powering up and using a 1950s key debouncer

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An 8-tube module from a 1954 IBM 705 mainframe: it's a key debouncer

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Examining a vintage RAM chip, I find a counterfeit with a different die inside

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Reverse engineering the 76477 “Space Invaders” sound effect chip from die photos

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Inside the vintage 74181 ALU chip: how it works and why it's so strange

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Inside the 74181 ALU chip

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Die photos and analysis of the revolutionary 8008 microprocessor, 45 years old

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SVG Mask Artwork of the Intel 4004

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Examining the core memory module inside a vintage IBM 1401 mainframe

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How the Z80's registers are implemented

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Why the Z-80's data pins are scrambled

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Reverse engineering the Intel 386 processor's register cell

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Two interesting XOR circuits inside the Intel 386 processor

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The transparent chip inside a vintage Hewlett-Packard floppy drive

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Reverse engineering a forgotten 1970s Intel dual core beast: 8271 (2020)

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Standard cells: Looking at individual gates in the Pentium processor

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Inside an IBM/Motorola mainframe controller chip from 1981

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