![]() ![]() There are a couple of rough edges, for one thing the CPU68 core is not cycle accurate and runs quite a bit faster than a real 6800 CPU. I also included a PS/2 keyboard interface which is in parallel with the row and column lines to which you can connect a 3圆 matrix of keyswitches like the original. Those boards lack a display so I added support for a couple of popular serial interfaced 7-segment LED displays and it should be straightforward to make nearly any display work. I've posted releases for the Terasic DE2 board and the cheap little EP2C5T144C8T "mini board" dev boards you can get from ebay, aliexpress and other Chinese sellers for under $15. ![]() I've been playing with another FPGA project recently, this time recreating the Heathkit ET-3400, a popular 6800 microprocessor trainer from the 1970s. ![]()
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