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// system defined:
#define T_DIVIDE 0 // divide error
#define T_DEBUG 1 // debug exception
#define T_NMI 2 // non-maskable interrupt
#define T_BRKPT 3 // breakpoint
#define T_OFLOW 4 // overflow
#define T_BOUND 5 // bounds check
#define T_ILLOP 6 // illegal opcode
#define T_DEVICE 7 // device not available
#define T_DBLFLT 8 // double fault
/* #define T_COPROC 9 */ // reserved (not generated by recent processors)
#define T_TSS 10 // invalid task switch segment
#define T_SEGNP 11 // segment not present
#define T_STACK 12 // stack exception
#define T_GPFLT 13 // genernal protection fault
#define T_PGFLT 14 // page fault
/* #define T_RES 15 */ // reserved
#define T_FPERR 16 // floating point error
#define T_ALIGN 17 // aligment check
#define T_MCHK 18 // machine check
#define T_SIMDERR 19 // SIMD floating point error
// These are arbitrarily chosen, but with care not to overlap
// processor defined exceptions or interrupt vectors.
#define T_SYSCALL 48 // system call
#define T_DEFAULT 500 // catchall
#define IRQ_OFFSET 32 // IRQ 0 corresponds to int IRQ_OFFSET
#define IRQ_KBD 1
#define IRQ_IDE 14
#define IRQ_TIMER 18
#define IRQ_ERROR 19
#define IRQ_SPURIOUS 31
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