Guest Post: The Real Story of Hacking Together the Commodore C128

Before Apple there was Commodore

Behind the C-128 from a 1985 Ad

The most popular computer ever sold to-date, the Commodore C-64, sold 27 Million units total back in the 1980’s.  Little is left to show of those times, the 8-bit “retro” years when a young long-haired self-taught engineer could, through sheer chance and a fair amount of determination, sit down and design a computer from scratch using a mechanical pencil, a pile of data books, and a lot of paper.

My name is Bil Herd and I was that long-haired, self-educated kid who lived and dreamed electronics and, with the passion of youth, found himself designing the Commodore C-128, the last of the 8-bit computers which somehow was able to include many firsts for home computing. The team I worked with had an opportunity to slam out one last 8 bit computer, providing we accepted the fact that whatever we did had to be completed in 5 months… in time for the 1985 Consumer Electronics Show (CES) in Las Vegas.

We (Commodore) could do what no other computer company of the day could easily do; we made our own Integrated Circuits (ICs) and we owned the two powerhouse ICs of the day; the 6502 microprocessor and the VIC Video Display IC.  This strength would result in a powerful computer but at a cost; the custom IC’s for the C-128 would not be ready for at least 3 of the 5 months, and in the case of one IC, it would actually be tricked into working in spite of itself.

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C64 Twitter client

c64_twitter

The last of the Commodore 64’s shortcomings has been addressed; it finally has a Twitter client. [Johan Van den Brande] wrote BREADBOX64 for use on the C64/128. It’s running on top of the open source Contiki operating system. The hardware is an MMC Replay cartridge with an ethernet adapter. If you don’t have the hardware available, you can run it inside an emulator like VICE. Embedded below is a C128D running the program.

(P.S. all of our posts are on @hackadaydotcom)

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