10.1.4 Adder/Subtractor
An Adder/Subtractor is a combinational logic block that performs both addition and subtraction of binary operands, typically controlled by a mode select input.
The following figure displays an Adder/Subtractor.
Supported Families
The following is a list of the supported families:
- IGLOO®
- ProASIC® 3
- SmartFusion®
- Fusion®
- ProASICPLUS®
- ProASIC®
- Axcelerator®
- SX-S
- SX-A
- eX
Related Topics
Key Features
- Parameterized word length
- Optional carry-in and carry-out signals
- Multiple gate level-implementations (speed/area tradeoffs)
- Behavioral simulation RTL in VHDL and Verilog