I finished making my nova core v1 but forogot to wire any devlogs so here is my readme i hope it is ok….. Nova Core is a custom 16-bit CPU designed and built from scratch in Verilog.

Demo https://zoomwag.github.io/nova-core/

The project is focused on learning how processors work by designing each major component individually and combining them into a complete CPU.

Here are some images of the cpu

Features

• 16-bit CPU architecture
• Custom instruction set
• Custom ALU
• Accumulator-based design
• Program counter
• Instruction register and decoder
• Control unit
• ROM and RAM
• Status flags
• Written entirely in Verilog

NovaCore CPU Instruction Set

Instruction format

Every NovaCore instruction is 16 bits wide:

Bit:  15              12 11                              0
      ┌─────────────────┬─────────────────────────────────┐
      │  4-bit opcode   │         12-bit operand          │
      └─────────────────┴─────────────────────────────────┘

• The opcode tells the CPU what operation to perform.
• The operand can contain a constant, RAM address, or program address.
• Some instructions do not use the operand