The 6809 did see use in some specific industrial and video game applications. We really like the aesthetic of the 7-segment LEDs and the overall look of the build. Like many computers of the day, the machine had a cassette interface. It sounds like he didn’t finish it, but he found the old boards and decided to recreate it on a breadboard. An MC1413 transistor array also allowed for a 7-segment display and a keypad along with a 7442 BCD decoder.Īpparently had started a similar computer back in the 80s, and made changes to it to adapt to the Wireless World’s project memory map. A PROM, two RAM chips, A 6821 PIA, and a 74LS138 decoder for address selection. Besides the 6809 there were only a few chips. The magazine promised you could build the system for £100. The upgrade to a 6809 appears in the July 1981 issue. You can even read the original articles in the January 1981 Wireless World where the board used a 6802. The files are on GitHub and there is even a series of videos about the machine. Now has reconstructed that computer on breadboards and it looks great. The Radio Shack CoCo used it and so did a construction article in Wireless World Magazine. Among old CPUs, the 6809 never got as much attention as some of its cousins.
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