Basic Register File Address Decoding
Memory corruption occurs when address decoding is sloppy and writes bleed into adjacent memory locations. The address decoder acts as the traffic cop of any register file or memory controller: it translates a compact binary address into a one-hot write enable signal, ensuring data lands exactly where intended.
Route the global write enable signal we to exactly one of four register write enables (we0, we1, we2, we3) based on the 2-bit address addr.
| we | addr | we3 | we2 | we1 | we0 | |------|--------|-------|-------|-------|-------| | 0 | 0 | 0 | 0 | 0 | 0 | | 0 | 1 | 0 | 0 | 0 | 0 | | 0 | 2 | 0 | 0 | 0 | 0 | | 0 | 3 | 0 | 0 | 0 | 0 | | 1 | 0 | 0 | 0 | 0 | 1 | | 1 | 1 | 0 | 0 | 1 | 0 | | 1 | 2 | 0 | 1 | 0 | 0 | | 1 | 3 | 1 | 0 | 0 | 0 |
Constraints
- Implement using combinational logic only.
- Do not instantiate memory elements or registers.
Topics
Solve this problem
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