- SCROLLLOCK
- SECS
- SECTOR_SIZE
- SECTSIZE
- SEG
- SEG16
- SEG_ASM
- SEG_KCODE
- SEG_KDATA
- SEG_NULLASM
- SEG_TSS
- SEG_UCODE
- SEG_UDATA
- SETGATE
- SHIFT
- SLEEPING
- STARTUP
- STA_R
- STA_W
- STA_X
- STS_IG32
- STS_T32A
- STS_TG32
- SVR
- SYSCALL
- SYS_chdir
- SYS_close
- SYS_dup
- SYS_exec
- SYS_exit
- SYS_fork
- SYS_fstat
- SYS_getpid
- SYS_kill
- SYS_link
- SYS_mkdir
- SYS_mknod
- SYS_open
- SYS_pipe
- SYS_read
- SYS_sbrk
- SYS_sleep
- SYS_unlink
- SYS_uptime
- SYS_wait
- SYS_write