Make the pointer gray

What this Gray code conversion question tests

This is a medium-difficulty digital design question that appears in hardware engineering interviews, particularly at firms that build low-latency trading systems or network hardware. It tests whether you understand the relationship between binary and Gray code representations and can implement the conversion correctly in SystemVerilog.

Gray code (also called reflected binary code) is widely used in synchronous circuits and pointer logic because consecutive values differ in only one bit, reducing metastability errors when signals cross clock domains. To solve this, you need to recognize the XOR-based transformation rule and express it as a clean combinational assignment that works for arbitrary bit widths.

• Binary to Gray code transformation formula
• Bitwise XOR operations in Verilog
• Combinational vs. sequential logic
• Clock-domain crossing and synchronization