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

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 (8-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