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Development of the MOS Technology 6502: A Historical Perspective (2022)

news.ycombinator.com Jason Sachs 2025-09-24 22:59:47

One ubiquitous microprocessor of the late 1970s and 1980s was the MOS Technology MCS 6502. I included a section on the development of the 6502 in Part 2 of Supply Chain Games, and have posted it as an excerpt here, as I believe it is deserving in its own right. (Note: MOS Technology is pronounced with the individual letters M-O-S “em oh ess”,[1] not “moss”, and should not be confused with another semiconductor company, Mostek.) Semiconductor Fabrication and the 6502 The 6502 was first deliver

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1975 Sep 16 MOS Technology samples 6502 at WESCON, here's how they designed it

news.ycombinator.com Jason Sachs 2025-09-25 03:59:47

One ubiquitous microprocessor of the late 1970s and 1980s was the MOS Technology MCS 6502. I included a section on the development of the 6502 in Part 2 of Supply Chain Games, and have posted it as an excerpt here, as I believe it is deserving in its own right. (Note: MOS Technology is pronounced with the individual letters M-O-S “em oh ess”,[1] not “moss”, and should not be confused with another semiconductor company, Mostek.) Semiconductor Fabrication and the 6502 The 6502 was first deliver

Topics: 6502 design mensch mos motorola

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Refurb Weekend: Silicon Graphics Indigo² Impact 10000

news.ycombinator.com View My Complete Profile 2025-09-28 04:42:38

My general vintage computing projects, mostly microcomputers, 6502, PalmOS, 68K/Power Mac and Unix workstations, but that's not all you'll see. While over the decades I've written for publications likeand, these articles are all original and just for you. My promise: No AI-generated article text, ever. All em-dashes are intentional and inserted by hand. Be kind, REWIND and PLAY.Old VCR is advertisement- and donation-funded, and what I get goes to maintaining the hardware here at Floodgap. I don'

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Microsoft open-sources Bill Gates’ 6502 BASIC from 1978

arstechnica.com Unknown 2025-10-13 00:56:13

On Wednesday, Microsoft released the complete source code for Microsoft BASIC for 6502 Version 1.1, the 1978 interpreter that powered the Commodore PET, VIC-20, Commodore 64, and Apple II through custom adaptations. The company posted 6,955 lines of assembly language code to GitHub under an MIT license, allowing anyone to freely use, modify, and distribute the code that helped launch the personal computer revolution. "Rick Weiland and I (Bill Gates) wrote the 6502 BASIC," Gates commented on the

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Microsoft open-sources its 6502 version of BASIC from 1976

theverge.com Tom Warren 2025-10-14 05:18:23

is a senior editor and author of Notepad , who has been covering all things Microsoft, PC, and tech for over 20 years. Posts from this author will be added to your daily email digest and your homepage feed. After years of unofficial copies of Microsoft’s 6502 BASIC floating around on the internet, the software giant has released the code under an open-source license. 6502 BASIC was one of Microsoft’s first pieces of software, adapted in 1976 by Microsoft cofounder Bill Gates and early employee

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BBC Micro, ancestor to ARM

news.ycombinator.com Chris Garrett 2025-11-13 23:08:44

ARM-based chips are found in nearly 60 percent of the world’s mobile devices Introducing the “Beeb” – the inventors of the ARM architecture used these machines to simulate and develop chip designs. Those chips are now in every home and business. This particular machine is my BBC Master, plus 5 1/4″ floppy disk drive, and three-button mouse. Isn’t she a beauty? Like many microcomputers of the 1980s, the BBC Micro ran on a 6502 series microchip. Unlike most of the competition, however, the BBC

Topics: 6502 bbc computer master school

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BBC Micro, the ancestor to ARM

news.ycombinator.com Chris Garrett 2025-11-14 05:08:44

ARM-based chips are found in nearly 60 percent of the world’s mobile devices Introducing the “Beeb” – the inventors of the ARM architecture used these machines to simulate and develop chip designs. Those chips are now in every home and business. This particular machine is my BBC Master, plus 5 1/4″ floppy disk drive, and three-button mouse. Isn’t she a beauty? Like many microcomputers of the 1980s, the BBC Micro ran on a 6502 series microchip. Unlike most of the competition, however, the BBC

Topics: 6502 bbc computer master school

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BBC Micro: The Ancestor to a Device You Are Guaranteed to Own

news.ycombinator.com Chris Garrett 2025-11-14 11:08:44

ARM-based chips are found in nearly 60 percent of the world’s mobile devices Introducing the “Beeb” – the inventors of the ARM architecture used these machines to simulate and develop chip designs. Those chips are now in every home and business. This particular machine is my BBC Master, plus 5 1/4″ floppy disk drive, and three-button mouse. Isn’t she a beauty? Like many microcomputers of the 1980s, the BBC Micro ran on a 6502 series microchip. Unlike most of the competition, however, the BBC

Topics: 6502 bbc computer master school

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A Real PowerBook: The Macintosh Application Environment on a Pa-RISC Laptop

news.ycombinator.com View My Complete Profile 2025-12-11 08:38:43

My general vintage computing projects, mostly microcomputers, 6502, PalmOS, 68K/Power Mac and Unix workstations, but that's not all you'll see. While over the decades I've written for publications likeand, these articles are all original and just for you. My promise: No AI-generated article text, ever. All em-dashes are intentional and inserted by hand. Be kind, REWIND and PLAY.Old VCR is advertisement- and donation-funded, and what I get goes to maintaining the hardware here at Floodgap. I don'

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Comparison of MGR, SunView, OpenWindows and X11R6 (2022)

news.ycombinator.com View My Complete Profile 2026-01-06 11:09:01

My general vintage computing projects, mostly microcomputers, 6502, PalmOS, 68K/Power Mac and Unix workstations, but that's not all you'll see. While over the decades I've written for publications likeand, these articles are all original and just for you. My promise: No AI-generated article text, ever. All em-dashes are intentional and inserted by hand. Be kind, REWIND and PLAY.Old VCR is advertisement- and donation-funded, and what I get goes to maintaining the hardware here at Floodgap. I don'

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Refurb weekend: Gremlin Blasto arcade board

news.ycombinator.com View My Complete Profile 2026-02-17 06:02:32

My general vintage computing projects, mostly microcomputers, 6502, PalmOS, 68K/Power Mac and Unix workstations, but that's not all you'll see. While over the decades I've written for publications likeand, these articles are all original and just for you. My promise: No AI-generated article text, ever. Be kind, REWIND and PLAY.Old VCR is advertisement- and donation-funded, and what I get goes to maintaining the hardware here at Floodgap. I don't drink coffee, but the Mr Pibb doesn't buy itself.

Topics: 6502 68k advertisement ai article

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Latest Tech News

Development of the MOS Technology 6502: A Historical Perspective (2022)

1975 Sep 16 MOS Technology samples 6502 at WESCON, here's how they designed it

Refurb Weekend: Silicon Graphics Indigo² Impact 10000

Microsoft open-sources Bill Gates’ 6502 BASIC from 1978

Microsoft open-sources its 6502 version of BASIC from 1976

BBC Micro, ancestor to ARM

BBC Micro, the ancestor to ARM

BBC Micro: The Ancestor to a Device You Are Guaranteed to Own

A Real PowerBook: The Macintosh Application Environment on a Pa-RISC Laptop

Comparison of MGR, SunView, OpenWindows and X11R6 (2022)

Refurb weekend: Gremlin Blasto arcade board

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