IP PortfolioDatapath and DSPinteger arithmetic
of_inc
Incrementer / decrementer
Maturity simulatedTargets FPGA + ASICDifficulty EasyPriority 1
Incrementer/decrementer with a log-depth (Kogge-Stone AND-prefix) carry chain: y = a + inc (dec=0) or a - inc (dec=1), co = carry/borrow.
Simulated. The RTL is lint clean and passes its self-checking testbench against a reference model in simulation. It has not been run on an FPGA board or in silicon.
Interfaces
| Port | Direction | Kind | Width | Notes |
|---|---|---|---|---|
| a | in | parallel | 32 | |
| y | out | parallel | 32 |
Standards
No external standard applies.
More in integer arithmetic
| ID | Block | Maturity |
|---|---|---|
| of_add_ripple | Ripple-carry adder | simulated |
| of_add_cla | Carry-lookahead adder | simulated |
| of_add_csel | Carry-select adder | simulated |
| of_add_kogge_stone | Kogge-Stone parallel-prefix adder | fpga-routed |
| of_add_brent_kung | Brent-Kung parallel-prefix adder | simulated |
| of_add_sklansky | Sklansky parallel-prefix adder | simulated |
| of_addsub | Adder/subtractor with flags | simulated |
| of_abs | Absolute value | simulated |
| of_cmp | Magnitude comparator | simulated |
| of_minmax | N-input min/max with index | simulated |