Implementations of free CPU's on Spartan-6
Implemented only the CPU without ROM, RAM and IO
| CPU | Option | Max clock | Pipeline | Slice Registers | Slice LUTs | Occupied Slices | LUT Flip Flop pairs |
|---|---|---|---|---|---|---|---|
| Storm | 87 Mhz | 7 | 996 | 1,807 | 607 | 1,987 | |
| Ion | 95 Mhz | 3 | 430 | 1,915 | 568 | 1,935 | |
| Plasma | +MUL | 75 Mhz | 3 | 399 | 1,906 | 585 | 1,914 |
| Plasma | -MUL | 93 Mhz | 3 | 260 | 1,700 | 514 | 1,707 |
| ZPU4 | medium | 130 Mhz | No | 421 | 980 | 314 | 1,069 |
| MB-Lite | +MUL +BARREL | 62 Mhz | 5 | 347 | 1,023 | 357 | 1,076 |
| MB-Lite | -MUL -BARREL | 140 Mhz | 5 | 340 | 820 | 256 | 845 |
| f32c | +rom +uart | 110 Mhz | 5 | 522 | 1106 | 310 | 1057 |
