Zip-8: a CHIP-8 emulator written in zig

Why do this?

mostly because I hate myself, partially to see whether I enjoy working on emulators.

what is done?

Through Test Driven Development I have confirmed that the following instructions work:

• 1nnn - JP addr
• 3xkk - SE Vx, byte
• 4xkk - SNE Vx, byte
• 5xy0 - SE Vx, Vy
• 6xkk - LD Vx, byte
• 7xkk - ADD Vx, byte
• 8xy0 - LD Vx, Vy
• 8xy1 - OR Vx, Vy
• 8xy2 - AND Vx, Vy
• 8xy3 - XOR Vx, Vy
• 8xy4 - ADD Vx, Vy
• 8xy5 - SUB Vx, Vy
• 8xy6 - SHR Vx {, Vy}
• 8xyE - SHL Vx {, Vy}
• 9xy0 - SNE Vx, Vy

what is left?

• 00E0 - CLS
• 00EE - RET
• 0nnn - SYS addr
• 2nnn - CALL addr
• 8xy7 - SUBN Vx, Vy
• Annn - LD I, addr
• Bnnn - JP V0, addr
• Cxkk - RND Vx, byte
• Dxyn - DRW Vx, Vy, nibble
• Ex9E - SKP Vx
• ExA1 - SKNP Vx
• Fx07 - LD Vx, DT
• Fx0A - LD Vx, K
• Fx15 - LD DT, Vx
• Fx18 - LD ST, Vx
• Fx1E - ADD I, Vx
• Fx29 - LD F, Vx
• Fx33 - LD B, Vx
• Fx55 - LD [I], Vx
• Fx65 - LD Vx, [I]

overall ideas and plans:

I'm leaning towards using libvaxis for rendering to the screen. I'd like to include the CHIP-8 test suit Following this chip-8 documentation