element14 Community
element14 Community
    Register Log In
  • Site
  • Search
  • Log In Register
  • Community Hub
    Community Hub
    • What's New on element14
    • Feedback and Support
    • Benefits of Membership
    • Personal Blogs
    • Members Area
    • Achievement Levels
  • Learn
    Learn
    • Ask an Expert
    • eBooks
    • element14 presents
    • Learning Center
    • Tech Spotlight
    • STEM Academy
    • Webinars, Training and Events
    • Learning Groups
  • Technologies
    Technologies
    • 3D Printing
    • FPGA
    • Industrial Automation
    • Internet of Things
    • Power & Energy
    • Sensors
    • Technology Groups
  • Challenges & Projects
    Challenges & Projects
    • Design Challenges
    • element14 presents Projects
    • Project14
    • Arduino Projects
    • Raspberry Pi Projects
    • Project Groups
  • Products
    Products
    • Arduino
    • Avnet Boards Community
    • Dev Tools
    • Manufacturers
    • Multicomp Pro
    • Product Groups
    • Raspberry Pi
    • RoadTests & Reviews
  • About Us
  • Store
    Store
    • Visit Your Store
    • Choose another store...
      • Europe
      •  Austria (German)
      •  Belgium (Dutch, French)
      •  Bulgaria (Bulgarian)
      •  Czech Republic (Czech)
      •  Denmark (Danish)
      •  Estonia (Estonian)
      •  Finland (Finnish)
      •  France (French)
      •  Germany (German)
      •  Hungary (Hungarian)
      •  Ireland
      •  Israel
      •  Italy (Italian)
      •  Latvia (Latvian)
      •  
      •  Lithuania (Lithuanian)
      •  Netherlands (Dutch)
      •  Norway (Norwegian)
      •  Poland (Polish)
      •  Portugal (Portuguese)
      •  Romania (Romanian)
      •  Russia (Russian)
      •  Slovakia (Slovak)
      •  Slovenia (Slovenian)
      •  Spain (Spanish)
      •  Sweden (Swedish)
      •  Switzerland(German, French)
      •  Turkey (Turkish)
      •  United Kingdom
      • Asia Pacific
      •  Australia
      •  China
      •  Hong Kong
      •  India
      •  Korea (Korean)
      •  Malaysia
      •  New Zealand
      •  Philippines
      •  Singapore
      •  Taiwan
      •  Thailand (Thai)
      • Americas
      •  Brazil (Portuguese)
      •  Canada
      •  Mexico (Spanish)
      •  United States
      Can't find the country/region you're looking for? Visit our export site or find a local distributor.
  • Translate
  • Profile
  • Settings
Community Hub
Community Hub
Member's Forum Wat is the oldest chip in your parts bin?
  • Blog
  • Forum
  • Documents
  • Quiz
  • Events
  • Leaderboard
  • Polls
  • Files
  • Members
  • Mentions
  • Sub-Groups
  • Tags
  • More
  • Cancel
  • New
Join Community Hub to participate - click to join for free!
Actions
  • Share
  • More
  • Cancel
Forum Thread Details
  • Replies 45 replies
  • Subscribers 549 subscribers
  • Views 4564 views
  • Users 0 members are here
  • MC6800
  • 2708
  • z80
  • old ICs
  • old chips
Related

Wat is the oldest chip in your parts bin?

dougw
dougw over 2 years ago

I came across some old and famous chips in one of my parts cabinets. Does anybody else keep old chips? and why?

Note that these were pretty expensive when they were purchased, especially the gold plated ceramic chips.

I expect most of these are part numbers that everyone has heard of.

Have you designed with any of these famous chips?

Brownie points if you can figure out the date codes.

image

image

What chips are buried in your archives?

  • Sign in to reply
  • Cancel

Top Replies

  • ralphjy
    ralphjy over 2 years ago +8
    I used to design with a lot of Signetics parts in the 70's. I've got one of the early 555 parts. Shown here with a 566 VCO and 5556 opamp. I probably have some of the 56x series PLLs around somewhere…
  • baldengineer
    baldengineer over 2 years ago +6
    I was excited because I thought I'd have a real contender. But, today is the first time I ever looked the date code, which is on the bottom. It's from a run in 1980. So I probably have MOS 6502 chips…
  • Jan Cumps
    Jan Cumps over 2 years ago +6
    oldest I had: image source . I don't have that kit anymore.
  • anniel747
    anniel747 over 2 years ago in reply to beacon_dave

    Something like Ghidra would have been useful.

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
  • dougw
    dougw over 2 years ago in reply to dang74

    My MC68000 is in my Amiga.....Relaxed

    • Cancel
    • Vote Up +4 Vote Down
    • Sign in to reply
    • Cancel
  • dang74
    dang74 over 2 years ago in reply to beacon_dave
    beacon_dave said:
    Also by having lots of near jumps you can reduce the overall code size to fit in the limited memory by reusing code blocks, however once again it makes it a lot harder to follow.

    This has been my observation as well.  Thirty to forty years ago memory size was limited so reuse was the key.  Now us poor suckers that are trying to reverse engineer code from that era are paying the price.

    • Cancel
    • Vote Up +2 Vote Down
    • Sign in to reply
    • Cancel
  • beacon_dave
    beacon_dave over 2 years ago in reply to anniel747

    If you can import the data. I don't think it supports HD6303 assembly ?

    I've had a bit of a look at Ghidra and IDA Pro in the past but I've not found much training material surrounding the older platforms.

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
  • dang74
    dang74 over 2 years ago in reply to dougw

    That is just as fine a place as any for it.  Slight smile 

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
  • scottiebabe
    scottiebabe over 2 years ago

    The frontend hybrid in an HP 3466a

    image

    True-rms converter

    image

    Custom dual-slope ADC

    image

    • Cancel
    • Vote Up +5 Vote Down
    • Sign in to reply
    • Cancel
  • anniel747
    anniel747 over 2 years ago in reply to beacon_dave

    You need to add the instruction set with SLEIGH.

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
  • baldengineer
    baldengineer over 2 years ago

    I was excited because I thought I'd have a real contender.

    image

    But, today is the first time I ever looked the date code, which is on the bottom.

    It's from a run in 1980. So I probably have MOS 6502 chips that are older than it.

    One day I need to do something with it.

    • Cancel
    • Vote Up +6 Vote Down
    • Sign in to reply
    • Cancel
  • beacon_dave
    beacon_dave over 2 years ago in reply to anniel747

    Now that sounds very interesting.

    If there is an equivalent SLEIGH model already for the MC6800, then it may be fairly straightforward to add the additional features and to tweak the quirks.

    Down another 'rabbit hole' we go...

    • Cancel
    • Vote Up +1 Vote Down
    • Sign in to reply
    • Cancel
  • bradfordmiller
    bradfordmiller over 2 years ago

    Fun topic. I wish I could say a Z800, but I'm still waiting.

    • Cancel
    • Vote Up 0 Vote Down
    • Sign in to reply
    • Cancel
<>
element14 Community

element14 is the first online community specifically for engineers. Connect with your peers and get expert answers to your questions.

  • Members
  • Learn
  • Technologies
  • Challenges & Projects
  • Products
  • Store
  • About Us
  • Feedback & Support
  • FAQs
  • Terms of Use
  • Privacy Policy
  • Legal and Copyright Notices
  • Sitemap
  • Cookies

An Avnet Company © 2025 Premier Farnell Limited. All Rights Reserved.

Premier Farnell Ltd, registered in England and Wales (no 00876412), registered office: Farnell House, Forge Lane, Leeds LS12 2NE.

ICP 备案号 10220084.

Follow element14

  • X
  • Facebook
  • linkedin
  • YouTube