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Posts Tagged ‘7400 logic’

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 »

7400 Contest: 24 hours left

Thursday, October 20th, 2011

Reminder to all those interested in entering their projects into our Open 7400 Logic Competition: Entries must be received by October 21, 2011, 6AM GMT. You only have 24 hours left to send your entry in. Entering Entries can be posted on in our forum, on your personal blog, or even a handy...

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Posted in 7400 contest | 2 Comments »

Replacing discrete 7400 logic devices with CPLDs

Sunday, April 17th, 2011

Whether you are working on a retro computing device, or experimenting with digital logic, you'll find that in most instances CPLDs can perform the same operations as a cluster of 7400 series discrete logic chips. Discrete logic devices, long considered the workhorses of the semiconductor industry, held a unit cost...

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Posted in CPLD, documentation | 7 Comments »

Recent Comments

  • Joe Desbonnet: Ya, I can recommend the low melting point solder. I used brand 'ChipQuik' and it's amazingly easy to use.
  • Jerome: I need a new BusPirate for the Fablab ;) Many thanks!
  • Max: Seems like an unexpectedly violent way to remove the chip indeed. A hot air station should of course do the job just fine, but in...
  • jose: Part removal described here is pure butchery, the cheapest hot air station will do a fast and clean job removing the QFP, heat air to...
  • Cody: Yes please