/* the following syscalls are supported by virtual IO */
#define SYS_OPEN        0x01
#define SYS_CLOSE       0x02
#define SYS_LSEEK       0x03
#define SYS_READ        0x04
#define SYS_WRITE       0x05
#define SYS_CREAT       0x06
#define SYS_UNLINK      0x07
#define SYS_STAT        0x08
#define SYS_FSTAT       0x09
#define SYS_GETTIME     0x0a
/* #define SYS_FTRUNCATE   0x0b */

