- MAGICNUMBER
- MAJOR
- MAJOR_NR
- MAPCGA
- MAPCONS
- MAPEGA
- MAPMONO
- MAPVGA
- MAP_FIXED
- MAP_NR
- MAP_PAGE_RESERVED
- MAP_PRIVATE
- MAP_SHARED
- MAP_TYPE
- MARK_ERR
- MAX
- MAXHOSTNAMELEN
- MAX_ARG_PAGES
- MAX_BLKDEV
- MAX_BUF
- MAX_BUFFER_SECTORS
- MAX_CANON
- MAX_CDB
- MAX_CHRDEV
- MAX_DISK_SIZE
- MAX_ERRORS
- MAX_HD
- MAX_INPUT
- MAX_IP_NAME
- MAX_REPLIES
- MAX_RETRIES
- MAX_SCSI_DEVICE
- MAX_SCSI_HOSTS
- MAX_SD
- MAX_SECONDARY_PAGES
- MAX_SENSE
- MAX_SHARED_LIBS
- MAX_SR
- MAX_ST
- MAX_SWAPFILES
- MAX_TASKS_PER_USER
- MAX_TIMEOUT
- MAYREDO
- MAY_EXEC
- MAY_READ
- MAY_WRITE
- MBIF
- MBMASK
- MBOA
- MCAIO
- MCA_GET
- MEDIUM_ERROR
- MEM_BUFFER_SIZE
- MESSAGE_REJECT
- MICROSOFT_BUSMOUSE
- MIN
- MINIX_DIR_ENTRIES_PER_BLOCK
- MINIX_HEADER
- MINIX_INODES_PER_BLOCK
- MINIX_I_MAP_SLOTS
- MINIX_NAME_LEN
- MINIX_ROOT_INO
- MINIX_SUPER_MAGIC
- MINIX_Z_MAP_SLOTS
- MINOR
- MINUTE
- MIN_RESET_DELAY
- MISCOMPARE
- MKDIOADDR
- MODE_SELECT
- MODE_SENSE
- MONO
- MOUSE_IRQ
- MSB_ID_Code
- MSDOS_CAN_BMAP
- MSDOS_DIR_BITS
- MSDOS_DOT
- MSDOS_DOTDOT
- MSDOS_DPB
- MSDOS_DPB_BITS
- MSDOS_DPS
- MSDOS_DPS_BITS
- MSDOS_FAT12
- MSDOS_I
- MSDOS_MKATTR
- MSDOS_MKMODE
- MSDOS_NAME
- MSDOS_ROOT_INO
- MSDOS_SB
- MSDOS_SUPER_MAGIC
- MSE_CONFIG_BYTE
- MSE_CONFIG_PORT
- MSE_CONTROL_PORT
- MSE_DATA_PORT
- MSE_DEFAULT_MODE
- MSE_DISABLE_INTERRUPTS
- MSE_ENABLE_INTERRUPTS
- MSE_INTERRUPT_PORT
- MSE_INT_OFF
- MSE_INT_ON
- MSE_READ_X_HIGH
- MSE_READ_X_LOW
- MSE_READ_Y_HIGH
- MSE_READ_Y_LOW
- MSE_SIGNATURE_BYTE
- MSE_SIGNATURE_PORT
- MSG_OOB
- MSG_PARITY_ERROR
- MSG_PEEK
- MS_BUSMOUSE_MINOR
- MS_MSE_COMMAND_MODE
- MS_MSE_CONFIG_PORT
- MS_MSE_CONTROL_PORT
- MS_MSE_DATA_PORT
- MS_MSE_DISABLE_INTERRUPTS
- MS_MSE_ENABLE_INTERRUPTS
- MS_MSE_INT_OFF
- MS_MSE_INT_ON
- MS_MSE_READ_BUTTONS
- MS_MSE_READ_X
- MS_MSE_READ_Y
- MS_MSE_SIGNATURE_PORT
- MS_MSE_START
- MS_NODEV
- MS_NOEXEC
- MS_NOSUID
- MS_RDONLY
- MS_SYNC
- MTYP
- MUL10
- M_386
- M_68010
- M_68020
- M_B40x25
- M_B80x25
- M_BG320
- M_BG640
- M_C40x25
- M_C80x25
- M_CG320
- M_CG320_D
- M_CG640_E
- M_CG640x350
- M_EFAMONOAPA
- M_EGAMONO80x25
- M_ENHMONOAPA2
- M_ENH_B40x25
- M_ENH_B80x25
- M_ENH_B80x43
- M_ENH_C40x25
- M_ENH_C80x25
- M_ENH_C80x43
- M_ENH_CG640
- M_MCA_MODE
- M_OLDSUN2
- M_SPARC
- M__68010
- M__68020
- M__OLDSUN2
- M__SPARC