yeah I understand the two schematics now. I'm probably going to go with the controller schematics here:
http://emesystems.com/OL2ph.htm
I've been reading up on the LCD controllers i ordered and I've been toying with AVR tools to figure out efficient ways to interface with LCD controllers.
My goal is to use the 128x64 screen for graphing of logs (temperature, ph, orp, etc). The 128x64 uses dual KS0108's. I also have a 16x4 character LCD ordered that uses the HD44780 controller. I wonder if it'd also have dual controllers because most of the info I've found on the HD44780 pertains to a 2 line screen. we'll see.
I'm waiting on the parts to arrive. they haven't even shipped them yet and I paid extra for express shipping. *grumble grumble*