The Naz80-A is the first of the build process and is designed to offer a simple single stand alone computer with just an LCD display and hex keyboard.

Hardware Specifications

• Z80 Processor
• 4Mhz Crystal Oscillator 
• 256 bytes ROM – Expandable to 32K
• 255 bytes RAM – Expandable to 16K
• 2 x 16 LCD Display
• Hex Keypad

Software Specifications

• Simple Monitor program 
• List memory contents
• Edit memory contents
• Run from location
• Built in routines  for LCD, keyboard and other functions

Schematic for the NaZ80-A