Uncle DT's Random Image Thread

[Kruger]

So it looks like it's a combination of software in the computer along with the Happy that enables the 54k throughput.  The onboard ram in the Happy enables it to cache sectors and send them more quickly, plus the Happy and SpartaDOS/Happy software/etc... essentially bypass the SIO routines completely and use their own in order to enable the high speed data transfers.  Interesting....