kernel/arch/i386/serial.h

   1
   2 #ifndef _KERN_SERIAL_H
   3 #define _KERN_SERIAL_H 1
   4
   5 #define THRREG  0
   6 #define RBRREG  0
   7 #define FICRREG 2
   8 #define LSRREG  5
   9 #define LCRREG  3
  10 #define SPRREG  7
  11
  12 #define COM1_BASE       0x3F8
  13 #define COM1_THR        (COM1_BASE + THRREG)
  14 #define COM1_RBR (COM1_BASE + RBRREG)
  15 #define COM1_LSR        (COM1_BASE + LSRREG)
  16 #define         LSR_DR          0x01
  17 #define         LSR_THRE        0x20
  18 #define         LCR_DLA         0x80
  19
  20 #endif