Removing the Eagle Sonic, got interested in the Falcon bus PAL and GAL set up. While I wouldn't know how to actually program them, tracing out the lines, and comparing to schematics, the are actually pretty simple in function. Kind of provide a "informatiebord" (Dutch

) for other processors on board

.
The Field Service Manual really doesn't go into detail what actually goes on at boot.
I don't understand what component actually "looks for a magic number" at the cartridge port at boot, then if it's not found, boot from ROM.
A more step by step detailed of what occurs at boot, what initializes first and so on would help me a lot.
If the CPU comes up first, isn't one of the first thing is does is RST, then continue to execute?
The CPU obviously doesn't know anything about the cart port, what processor, or logic points it that way when it comes out of reset?
I know at one point Rodolphe had considered just removing them and putting all this in the CT60 load, not sure why he didn't, but after following the train route, prolly just didn't seem worth the time as it doesn't look like performance is a factor in their function.
Short and sweet, right
