Its all real easy. If i knew a little bit more about which exact systems your using and if you desire automatic power-off during shutdown will help me derive a schematic. Maybe next weekend ill make my Mac soft-power capable and explain it
Trash80toHP_Mini wrote:You could be suggesting the possibility of creating a single state logic analyzer/detector . . .
. . . such might be wedged onto a ROM SIMM V3 PCB to trip board flip-flop signal on a header pin/cable I/O line to the PSU?
Trash80toHP_Mini wrote:The same might be done for a multipurpose MicroController based hack?
Trash80toHP_Mini wrote:Can I use my very rusty Basic for any MicroController project?
What's an ASM? Do I need to learn that if the above is not true?
techknight wrote:You could technically just simply decode an address thats out in a void that other hardware doesnt conflict with. A simple write to that particular address would shut the machine down, using an INIT such as bbraun's could be modified to perform such an action.
Dennis Nedry wrote:Knowing that no two inputs can change simultaneously, the input state must technically change a couple of times to get from 00 to 11, even if it's in a trillionth of a second, and that can happen 1 of 2 ways:
00 -> 01 -> 11
00 -> 10 -> 11
If this process happens between clock pulses, then it doesn't matter. However, if you are ignoring the clock and using only combinational logic, you will occasionally detect 01 and 10 states when attempting to change directly from state 00 to 11. As you can imagine, when looking at lots and lots of bits, there can be lots of hidden intermediate states from one intended state to the next.
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