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Posts Tagged ‘6502’

Vulcan-74: A 6502 Retro MegaProject

Monday, August 31st, 2015

Radical Brad over at the 6502.org forum has been working on this cool 7400 logic VGA video game system, Vulcan-74: The Goals... Video must be perfectly stable VGA, putting out 256 colors at a resolution of 400x300 using an 8 bit color space divided into RRR-GGG-BB Video must include full 256 color...

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Posted in hacks | 1 Comment »

MEEPROMMER: (E)EPROM programmer based on Arduino hardware

Wednesday, July 31st, 2013

mkeller0815 built  his own programmer - the MEEPROMMER, that is available at github: The idea behind this EEPROM programmer was to have a tool to get data on a 28Cxxx EEPROM for my own 6502 based computer. There are a lot of professional programmers you can buy, but for a...

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Posted in Arduino, programmers | No Comments »

DIY 6502 computer using block transfer engine

Friday, September 7th, 2012

Andre Fachat has written a post on his 6502.org blog detailing his DIY 6502 computer build. "I have built a DIY 6502 computer, which is mostly TTL logic only except for 65xx chips and ROMs, but the most TTL-ish part is the blitter: A block transfer engine that DMAs memory...

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Posted in CPLD, DIY, vintage | 1 Comment »

PROP-6502 Propeller laptop

Wednesday, February 22nd, 2012

Dennis Ferron developed this Parallax Propeller Laptop with a 6502 co-processor and 64K of static RAM as his entry to a Parallax Propeller design contest. He observed that hardware prototyping has evolved from building-block hardware (TTL) to programmable hardware (PLA’s and FPGA’s). He believes that the Propeller chip represents the...

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Posted in Parallax Propeller, vintage | 2 Comments »

6502 microprocessor documentary in the works

Tuesday, January 31st, 2012

"THE 6502" is a documentary series by Jason Scott about the MOS Technology 6502 chip, the circumstances that lead to it and the experiences of assembly language programming. Funded in 2011, the project is expected to go for several years of production, interviewing dozens of figures related to this subject....

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Posted in Chips, documentation, help, vintage | 3 Comments »

27C3: Reverse engineering the MOS 6502

Saturday, January 1st, 2011

The MOS 6502 CPU, which was designed in 1975 and powered systems like the Apple II, the Atari 2600, the Nintendo NES and the Commodore 64 for two decades, has always been subject to intense reverse engineering of its inner workings. This talk by Michael Steil presents the way from...

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Posted in Chips, reversed, talks | No Comments »

Recent Comments

  • Pekka Akselin: This is ridiculous!? :-) We are back at 256(!) byte EPROMs that needed multiple, a handful, of voltages to run! :-(
  • KH: Let's try a back-of-envelope calc balancing energies. From MCP1700 datasheet, there are graphs for a 200mA load step. Estimate the energy shortfall as 12uJ. Say...
  • Daniel: It's been a week and my comment is still awaiting moderation. Apparently the CIA doesn't want their involvement known?
  • KH: Agree, so okay, I guess he must have learned from somewhere. 100nF and 1000uF is so far apart, that was jarring; it's more magic incantation...
  • Max: I have a suspicion the hefty electrolytic cap might be some sort of cargo cult carry-over from other RF-based projects - for instance, I've seen...