Hello, all! Joined so I could post this.
I have a Macintosh SE with an aftermarket addition of a hard drive (I can pull identifying information from the back of the system if it's absolutely necessary, AND if someone tells me what they need). I'm guilty of having it for the sole purpose of someday making it into a Linux box It works (technically) but it is sans keyboard and mouse. I don't have much use for the current internals, as the 68k architecture (no offense meant) is *ahem* a little underpowered for any sort of modern computing.
I've recently decided that I was interested in knowing how the MacSE generates its video signals. I do not have an oscilloscope! -- so I'm asking you folks to help me out. I can't find much information online, as my Google-Fu is weak (old man) [for the less nerdy, that means I can't use a search engine very well at all]. I do gather that it's not something common, such as Composite signalling... but I can't find out any sort of technical info on what exactly it IS.
I do understand that there's a logic board and an "analog board" -- the latter being basically what drives the CRT directly, more akin to the PCB in a CRT monitor than any video card in a computer. I also understand that the MacSE display is a literal B&W display -- pixels are either 'on' (white) or 'off' (black) and there's no room for grayscale.
What I don't understand is the protocol of communication between the two boards. If someone could explain it to me (pictures will help! I'm visual) I'd be much obliged.
Thanks in advance.