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Update: And just like that the mystery of the VIC-42 is apparently solved!:  

"Mike [Naberezny] determined it's the uC in an AlphaCom VP42 printer (not the 42). Mike scoped out a few pins and it appears to be a 6500/1, same uC in the 1520 plotter, and which can hold a small program: https://e4aws.silverdr.com/hacks/6500_1/ " - Src: Jim Brain, Commodore International History Society Facebook Group, with thanks to David Wood

So there we have it! It seems to be a 6502-core based, single chip computer, printer controller, used by Alphacom! I got close; I had the innards of an Alphacom 42 photographed a week ago and found no VIC, but I couldn't find a VP42. Not quite as exciting as we may have hoped, and strange to me as VIC stands for Video Interface Chip, but very cool to know nonetheless. Well done gents! Mystery solved, and so the VIC-rolling can end! ;-)

Original post:

Dear Supporters

Earlier this week patron Kevin Gonzalez alerted me to a "VIC-42" chip that had appeared on fleaBay. There was no info about in on Google, so I bought one and it arrived today. I thought I'd bake a very #Shorts little recipode about it. The plot (and recipe) thickens...

Video: https://youtu.be/2tqLi3En3wk

Your friend in retro, Perifractic 

Files

Previews only

What is the mysterious Commodore VIC-42 Chip?!

Does the mysterious MOS / CBM chip that appeared on eBay this week hold the meaning of life? Nobody seems to know what it is! Can we hitchhike closer to solving the riddle? Made possible by our friendly sponsor http://PCBWay.com - great PCBs from just $5! #Shorts 🙏 Become a supporter: http://perifractic.com/patreon 🛠 Get the tools I use: 🇺🇸http://amzn.to/2MKqdS2 | 🇬🇧http://amzn.to/30y05lg 🎧 Stream the music: http://perifractic.com/music ✅ Subscribe: http://youtube.com/perifractic?sub_confirmation=1 🗨️ Website/social/freebies: http://perifractic.com ┄┄ RECIPE INGREDIENTS* ┄┄ • VIC-42 on eBay: https://ebay.us/18JvoI • VIC-II²: http://perifractic.com/vicii2 • Rickroll BluREU demo by Crest: https://csdb.dk/release/?id=90344 • Video version: https://youtu.be/Yo7uXaV6Q1s ┄┄ SAUCES & CHEERS ┄┄ • Kevin Gonzalez • Bil Herd • David Pleasance • Dave Haynie • Rik Prince • Jan Beta • Lee Volante • Wikipedia & Wikimedia Commons • The Internet Archive • Gardenside Prods. & Clue Detectives & Paradise Radio • Every attempt was made to contact copyright owners before including content. Very occasionally things can get forgotten in the excitement to release a video so please don't hesitate to let me know if that is the case & I'll put it right. All other media featured is marked as public domain on Google Images or used with written permission or shown under fair use law. 🚘 With free Tesla supercharging/discounted solar your better half can afford to buy you more retro gear!*: http://bit.ly/teslafractic ┄┄ SOME INGREDIENTS BY ┄┄ • http://MattGrandis.net - website design • http://twitter.com/_GazMarshall - some graphics • http://youtube.com/Elwoz - colour palette cleanser • http://PaulKitching3d.com - some 3D models 🐶 Special thanks to Ladyfractic & Puppyfractic! Get a discount on Puppyfractic's featured dog collar fitness/GPS tracker at http://bit.ly/periwhistle & a free Bark Box at http://bit.ly/barkyfractic !* ©️ All music & content © & ™ Bideas LLC dba Perifractic’s Retro Recipes 1988-2021. The ЯRetro Show® trade mark applied for. All rights reserved. *Some links may offer some peanuts to support this retrochannel but all opinions are 100% unbiased. #retrogaming #retrocomputing #dogs #geekgirl

Comments

Paul Jacobson

the comment from mrdoornbos @mrdoornbos in that tweet: Well I have one of these mystery VIC-42 chips and it doesn't test "good" as a VIC or VICII on the backbit. I think this might be something we just have to make up a story about. "There I was, wire tying a Commodore 264, when I was attacked by a Spectrum..."

Paul Jacobson

Great stuff. As you say not Super exciting but still mystery solved. :) Good work!! Very Interesting Chip ;)