This has very little info but it has two incredibly important watches: Zippy's speed and the boss's X-position during boss fights.
The main trick to preserving speed is to not be rolling on the ground.
SystemID A26
05 b u 0 Main RAM Y-position
63 b u 0 Main RAM ascend/descend timer?
62 b u 0 Main RAM X-speed
66 b u 0 Main RAM boss HP
01 b u 0 Main RAM boss X-position