EuroTwo CPU

The EuroTwo CPU is the little sister of the EuroOne CPU. This CPU is the first to be implemented in hardware. I planned to implement

• A simple instruction set
• Three 4-Bit registers
• One 8-Bit programcounter register (PC)
• One 12-Bit instruction register (IR)
• A simple ALU
• 4-Bit Databus
• 4-Bit Addressbus
• 8-Bit Addresssbus for ROM
• 8-Bit Instructionbus
• 16 words (4-Bits) of RAM for data-memory
• 255 triple-words (12-Bits) of ROM for program-memory
• Thus it is a havard architecture!
• Thus it might have a maximum of 255 machinecode instruction
• No microcoding is implemented