Here, I found SED1335 based old 320 x 240 graphic lcd.
It costs only 9 us dollar or so with relatively high resolution, and EL backlight (Even driver is included too!) so I'm gonna get one.
But unlike with KS0108 or others, I can't find any SED1335 display driven by arduino and I found a article that because GLCD library is using uint_8 that is 8 bit but SED1335's LCD has 320 pixel width which is far bigger than 256.
Does that mean changing variable type into 16bit might help me to use GLCD library?
-yes, not in English. It's Korean. But there is nothing important except source code and few photos.
Here is the schematic and .asm/.hex file for atmega 32.
He said that he's going to use Assembly, so that might be assembly code -I do know nothing about assembly!
Is there any chance to re-make that assembly code into arduino library?