HelenOS sources

VECTOR_DE          74 kernel/arch/amd64/include/arch/interrupt.h #define VECTOR_DE                 (IVT_EXCBASE + EXC_DE)
VECTOR_DE          76 kernel/arch/ia32/include/arch/interrupt.h #define VECTOR_DE                 (IVT_EXCBASE + EXC_DE)
HelenOS homepage, sources at GitHub