Technical Deep Dive: 15 second format routine for the Commodore 64 and 1541

In the last episode I walked you through exactly how the Commodore DOS 2.6 routines in the 1541 disk drive work, and explained why it took over a minute and a half to format a disk. In this episode, I'll look at "15 Second Format" - a program written by Mike J. Henry, the same Mike J. Henry of Fast Hack'Em fame, and explain what it does differently to be able to format a disk in under 15 seconds. To be able to create this video, I did a complete, commented disassembly of the 15 second format code, which you can see here: https://github.com/commodoreihs/15_se...