Arithmetic & Math

Signed 16-to-8 Saturating Cast — L1 Upgrade

Signed 16-bit to 8-bit saturating cast with sticky overflow flag for range safety.

Open in IDE Category Wiki · arithmetic

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Signed 16-to-8 Saturating Cast — L1 Upgrade is a Verilog reference block in the Arithmetic & Math catalog. Adders, multipliers, dividers, ALUs, and arithmetic datapaths. Marked Easy: a small block you can read, simulate, and synthesize in one sitting.

This IP provides a robust, zero-latency solution for casting 16-bit signed integers to 8-bit signed integers with saturation. It ensures data integrity in L1 upgrade scenarios by preventing overflow/underflow errors. The saturation_flag allows downstream logic to detect and handle range violations immediately. The design is fully verified with comprehensive test cases covering normal operation, boundary conditions, and saturation events.

Choose Open in IDE. RTL Studio loads the packaged workspace for Signed 16-to-8 Saturating Cast — L1 Upgrade.
Read the Verilog module in the editor. The catalog line for this block: Signed 16-bit to 8-bit saturating cast with sticky overflow flag for range safety.
Run the packaged testbench with the in-browser Verilator simulator, then open the VCD in the waveform viewer.
Run Yosys in the same IDE for a generic netlist. Sky130 liberty mapping is a separate Pro library option.

RTL Studio is the Verilog simulator and IDE around this block: Slang lint, Verilator, VCD waveforms, and Yosys, in the browser. Simulation guide · Yosys guide.

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