The bitrate of the PCM is determined based on how quickly you can write a byte to the register. The fastest you could write general data is once every 6 cycles, which gives ~298 MHz of sample rate, so 44.2 kHz is easily doable if that's all you want to do with the CPU.
I'm somewhat surprised he didn't talk about evidence of space-faring ancient civilizations. If humans perish and a new intelligent species comes around in millions of years, they would be able to find stuff we've left on the moon, provided we pepper it all over its surface so as to survive any future meteor impacts.
In Programmer mode if you type in a number larger than 32 bits and the window is scaled to its smallest size, the lower row of binary is cut off a little bit.
You cannot enter fractional values in programmer mode.
This is reasonable, but what is incredibly annoying is that when you type in a number while in Programmer mode, if you then change to Scientific mode, it blows away the number you typed in.