6502 prototype board

After some digging around I found that nesdev had a pinout of the 6502 used on the NES so I created this little development board for it

and here's the schematic. The board contains the 6502 (the brains of the system) a atmel at28c64 eeprom (for storing the program data), a 6522 VIA chip (for I/O tasks) and a 74LS138 (for device memory mapping).