Event Bits vs. Memory Address

I am trying to create some NPCs that only show up after a certain event has been triggered, but I can't figure out how to convert from event bits to memory addresses. 

Let's take an example that I know. In the "Choose a Scenario" screen, the NPC Sabin shows up as long as the following is set:
Memory Address: 1EE5
Memory Bit: 5
When you clear Sabin's scenario, you clear event bit "32A" with the hex code D7-2A. Clearing this causes the NPC to go away.

So how do you get from 32A to 1EE5:5? I can't figure out the conversion.

Specifically, I am looking to have an NPC show up after event bit 048 is set (Terra goes berserk and flies off). I would settle for the Memory Adress/Bit, but I'd like to know how to get between Event Bits and Memory Addresses so I don't have to ask every time.