Saturday, January 11, 2014

unified socket.

I've been working so that I can reuse the 68060 board with 68040s. It will require soldering some resistors, but I believe that I can get it to work. I need to make the 68040 not be multiplexed because I want to keep the level shifters that will just shift 5V to 5V.

The two issues that I need to resolve is how to handle BCLK and /CDIS. I need to keep /CDIS high during reset so that it does not multiplex the bus. I will just use external logic to multiplex. I guess that I can just have a BCLK line waving around and making noise, but I would rather not. After I handle /CDIS, I will finish the clock circuit.

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