| ??? 02/12/07 13:33 Read: times |
#132601 - ... Responding to: ???'s previous message |
Actually, it looks like he's trying to implement a simple combinational logic circuit that implements his A[5:0]/D[7:0] truth table. That's why there's all this talk about the QM algorithm and other logic minimization techniques. exactly Making one's own bootloader could be a great learning exerpience. That said, doing it in the way he's suggested thus far probably will not be terribly practical or useful.
for me, it is. And, for that matter, getting something like this to work using pedestrian 74HC logic on an already overclocked microcontroller is going to be a real challenge, and not a particularly intellectual one. My microcontroller is an 80C51-BH, and if it uses cmos, and I'm hooking it up to high-speed cmos gates, then these gates shouldn't have difficulty processing the signal. Because I am willing to adjust the clock for the programming mode, timing is not much of an issue. I really don't know why Mike is being so obstinate after so many have told him that his design is obtuse. 1. I want to learn, 2. I want a system that works, 3. I don't want to keep inserting/removing chips, 4. I want to use my cpu's I have on hand (all 80C51-BH). right now, my code is cut down to 16 bytes, so that means I only need to worry about 4 address inputs instead of 6. |
