This could be a question for the Electronics StackExchange, but I figured that if I couldn't find any info about it it might be more of a Retrocomputing thing.
I've been poking around on Google and some vendor sites looking for a simple processor that I could just buy and plug into a breadboard or maybe hand-solder if necessary, and just mess around with as I learn about electronics and computer hardware.
I know about the 6502, as it were Ben Eater's videos that sparked my interest, but I thought "Hey, there must be some old 32 bit processor like this still in production". I'm the kind of guy who doesn't mind doing everything from scratch, even if it's impractical, so I was looking for something where I can hook up the 32 address lines to some memory or whatever in the same way you would a 6502. Turns out that that's not a thing. From what I understand, everything goes through controllers inside the chip for NAND or DDR or whatever and you connect those particular components/controllers to those pins, no exposed address bus or data pins.
I would have thought that some other people would want something like this, and that somebody would be making a really simple Microprocessor for that, whether it be in ARM or some old ISA, but all the chips I find are either 8/16 bit or have so many pins they need BGA, and none of them have anything clearly labelled as an address bus, so there must be a good reason it doesn't exist. I might just be using the wrong search terms or know way too little about electronics, but I can't seem to be able to find anything about this. If somebody could explain why to me, that would be greatly appreciated!