| # "C" Standard Extension for Compressed Instructions. | |
| # Version 2.0 | |
| c.ldsp | ci | cldsp_imm crd | 011...........10 | |
| c.sdsp | css | csdsp_imm crs2 | 111...........10 | |
| c.ld | cl | cld_imm crs1_ crd_ | 011...........00 | |
| c.sd | cs | csd_imm crs1_ crs2_ | 111...........00 | |
| c.addiw | ci | cimm5 icrs1 crd | 001...........01 | |
| c.addw | ca | crs2_ icrs1__ crd__ | 100111...01...01 | |
| c.subw | ca | crs2_ icrs1__ crd__ | 100111...00...01 |