| Code | Meaning | Cause |
| 0 | Divide error | The software is bad. |
| 1.00 | Debug exceptions | The software is bad. Record all addresses. |
| 2.00 | NMI interrupt | Stands for nonmaskable interrupt. The software is bad. Record all addresses. |
| 3.00 | Breakpoint | There is a software problem. Record all addresses. |
| 4.00 | Overflow | The software is bad. Record all addresses. |
| 5.00 | Bound range exceeded | There is a software problem. Record all addresses. |
| 6.00 | Invalid opcode | There is a software problem. Record all addresses. |
| 7.00 | Coprocessor not available | The software is expecting a math coprocessor, and one isn't installed. |
| 8.00 | Double fault | Two traps occurred at the same time. Record all addresses. |
| 9.00 | Coprocessor segment overrun | There is a software problem. Record all addresses. |
| A/10 | Invalid task state segment | There is a software problem. Record all addresses. |
| B/11 | Segment not present | There is a software problem. Record
all addresses. |
| C/12 | Stack exception | There is a software problem. Ignore this code if it follows a code D/13. |
| D/13 | General protection | There is a software problem or a corrupted database. |
| F/15 | Coprocessor error | There is a bad coprocessor chip. |