How to reverse my stopwatch code to count down in Assembler?
问题 I have written this code for stopwatch in Assembler. If you press button1, it will start counting up. If you press the same button again, it will pause, pressing it once more will resume the stopwatch. Pressing the button number 2 resets the stopwatch. It is quite some time, since I was programming in PicoBlaze Assembler and this is a few years old code and since I did not program for a few years, I have forgotten a lot. But now I need to slightly alter it and I need your help. So what I want