This is a very WIP 8 bit computer. So far it basically supports nothing but eventually will have a full instruction set.SpecificationsThe CPU will be 8 bit and have 4 8-bit registers, A, B, C and D. It also has two 16-bit registers, X and Y. It has 16-bit memory addressing capabilities. The ALU can perform operations between ABCD and another register or immediate 8-bit value. The supported ALU operations are:

• Add
• Subtract
• AND
• OR
• NOT
• Negate
• XOR
• Compare: subtract and set flags but return the first operand

It will have 4 flags: zero flag, negative flag, carry (unsigned carry) and overflow (signed carry) flags.You can also read from or write to memory. The address can be a 16-bit register XY or a combination of 8-bit registers AB or CD. You can load a correctly sized immediate value into either size register or pair, and move values between them.Finally, you can perform jumps to values in registers as well as 16-bit immediate values, or indirect jumps that add an 8-bit value to the program counter. These can be conditional, only running on the presence or absence of a given flag.