drivers/char/digiFep1.h

#define CSTART       0x400L
#define CMAX         0x800L
#define ISTART       0x800L
#define IMAX         0xC00L
#define CIN          0xD10L
#define GLOBAL       0xD10L
#define EIN          0xD18L
#define FEPSTAT      0xD20L
#define CHANSTRUCT   0x1000L
#define RXTXBUF      0x4000L


struct global_data 
{
	volatile ushort cin;
	volatile ushort cout;
	volatile ushort cstart;
	volatile ushort cmax;
	volatile ushort ein;
	volatile ushort eout;
	volatile ushort istart;
	volatile ushort imax;
};


struct board_chan 
{
	int filler1; 
	int filler2;
	volatile ushort tseg;
	volatile ushort tin;
	volatile ushort tout;
	volatile ushort tmax;
	
	volatile ushort rseg;
	volatile ushort rin;
	volatile ushort rout;
	volatile ushort rmax;
	
	volatile ushort tlow;
	volatile ushort rlow;
	volatile ushort rhigh;
	volatile ushort incr;
	
	volatile ushort etime;
	volatile ushort edelay;
	volatile unchar *dev;
	
	volatile ushort iflag;
	volatile ushort oflag;
	volatile ushort cflag;
	volatile ushort gmask;
	
	volatile ushort col;
	volatile ushort delay;
	volatile ushort imask;
	volatile ushort tflush;

	int filler3;
	int filler4;
	int filler5;
	int filler6;
	
	volatile unchar num;
	volatile unchar ract;
	volatile unchar bstat;
	volatile unchar tbusy;
	volatile unchar iempty;
	volatile unchar ilow;
	volatile unchar idata;
	volatile unchar eflag;
	
	volatile unchar tflag;
	volatile unchar rflag;
	volatile unchar xmask;
	volatile unchar xval;
	volatile unchar mstat;
	volatile unchar mchange;
	volatile unchar mint;
	volatile unchar lstat;

	volatile unchar mtran;
	volatile unchar orun;
	volatile unchar startca;
	volatile unchar stopca;
	volatile unchar startc;
	volatile unchar stopc;
	volatile unchar vnext;
	volatile unchar hflow;

	volatile unchar fillc;
	volatile unchar ochar;
	volatile unchar omask;

	unchar filler7;
	unchar filler8[28];
}; 


#define SRXLWATER      0xE0
#define SRXHWATER      0xE1
#define STOUT          0xE2
#define PAUSETX        0xE3
#define RESUMETX       0xE4
#define SAUXONOFFC     0xE6
#define SENDBREAK      0xE8
#define SETMODEM       0xE9
#define SETIFLAGS      0xEA
#define SONOFFC        0xEB
#define STXLWATER      0xEC
#define PAUSERX        0xEE
#define RESUMERX       0xEF
#define SETBUFFER      0xF2
#define SETCOOKED      0xF3
#define SETHFLOW       0xF4
#define SETCTRLFLAGS   0xF5
#define SETVNEXT       0xF6



#define BREAK_IND        0x01
#define LOWTX_IND        0x02
#define EMPTYTX_IND      0x04
#define DATA_IND         0x08
#define MODEMCHG_IND     0x20

#define FEP_HUPCL  0002000
#if 0
#define RTS   0x02
#define CD    0x08
#define DSR   0x10
#define CTS   0x20
#define RI    0x40
#define DTR   0x80
#endif