The following tables detail VAX trapping modes and their qualifiers.
VAX Trapping Mode Qualifiers
| Mode | Qualifier |
| Imprecise, underflow disabled | None |
| Imprecise, underflow enabled | u |
| Software, underflow disabled | s |
| Software, underflow enabled | su |
VAX Convert-to-Integer Trapping Modes
| Mode | Qualifier |
| Imprecise, integer overflow disabled | None |
| Imprecise, integer overflow enabled | v |
| Software, integer overflow disabled | s |
| Software, integer overflow enabled | sv |