Рет қаралды 590
This time a take a look at how a different project is generating the video RAM timing signals and try to reproduce the concept for myself on a breadboard.
I look at the overall idea of how the timing is broken down into 8 stages, making use of logic gates to decide if each signal is on or off at each stage, and then the use of a latch to re-time the signals, elimination most of the propagation delays.
I look at each chip in detail, explaining its function and its truth table. Also comparing the propagation delay of different variations of the chips.
The original design that I have taken this circuit from can be found here:
debuginnovation...