Bit Slice

中文版

FPGA bit slicing and alignment tool - a browser-based utility for visualizing, searching, and re-aligning raw hexadecimal data at the bit level.

Live demo: sure-wang.github.io/bit-slice

Features

• Hex-to-Binary Visualization - Convert hex data to binary and view it as a bit string
• Window-Based Slicing - Drag a slider to select the start bit and set window width to partition data into bit groups
• Bit Sequence Matching - Search for Verilog-style (N'hXX) or raw binary patterns with highlight and navigation
• Slice Reassembly - Re-slice binary data into hex groups and verify alignment
• Input History - Auto-saved hex inputs via localStorage with debounce

Usage

Open the live demo or index.html locally in any modern browser.

1. Enter hex data (e.g. A3F2) in the input field
2. Use the slider to select a start bit and adjust the window size
3. Optionally enter a match pattern (e.g. 7'h3F or 0011111) to find and jump to bit sequences
4. The result shows the re-sliced hex groups

Limits

• Input: up to 512 hex characters (2048 bits), enforced by input field max length
• Window size: up to 512 bits per slice — binaryToHex uses BigInt, so there is no practical precision limit within the input cap

Testing

node test.js

Covers hex/binary conversion, Verilog-style parsing (N'hXX), bit sequence matching, slice reassembly, and edge cases.

License

MIT