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      1 /*	$NetBSD: dlreg.h,v 1.6 2005/12/11 12:23:29 christos Exp $	*/
      2 /*
      3  * Ben Harris, 1997
      4  *
      5  * This file is in the Public Domain.
      6  */
      7 /*
      8  * dlreg.h -- Definitions for the DL11 and DLV11 serial cards.
      9  *
     10  * Style in imitation of dzreg.h.
     11  */
     12 
     13 #ifdef notdef
     14 union w_b
     15 {
     16 	u_short word;
     17 	struct {
     18 		u_char byte_lo;
     19 		u_char byte_hi;
     20 	} bytes;
     21 };
     22 
     23 struct DLregs
     24 {
     25 	volatile u_short dl_rcsr; /* Receive Control/Status Register (R/W) */
     26 	volatile u_short dl_rbuf; /* Receive Buffer (R) */
     27 	volatile u_short dl_xcsr; /* Transmit Control/Status Register (R/W) */
     28 	volatile union w_b u_xbuf; /* Transmit Buffer (W) */
     29 #define dl_xbuf u_xbuf.bytes.byte_lo
     30 };
     31 
     32 typedef struct DLregs dlregs;
     33 #endif
     34 
     35 #define	DL_UBA_RCSR	0
     36 #define	DL_UBA_RBUF	2
     37 #define	DL_UBA_XCSR	4
     38 #define	DL_UBA_XBUFL	6
     39 
     40 /* RCSR bits */
     41 
     42 #define DL_RCSR_RX_DONE		0x0080 /* Receiver Done (R) */
     43 #define DL_RCSR_RXIE		0x0040 /* Receiver Interrupt Enable (R/W) */
     44 #define DL_RCSR_READER_ENABLE	0x0001 /* [paper-tape] Reader Enable (W) */
     45 #define DL_RCSR_BITS		"\20\1READER_ENABLE\7RXIE\10RX_DONE\n"
     46 
     47 /* RBUF bits */
     48 
     49 #define DL_RBUF_ERR		0x8000 /* Error (R) */
     50 #define DL_RBUF_OVERRUN_ERR	0x4000 /* Overrun Error (R) */
     51 #define DL_RBUF_FRAMING_ERR	0x2000 /* Framing Error (R) */
     52 #define DL_RBUF_PARITY_ERR	0x1000 /* Parity Error (R) */
     53 #define DL_RBUF_DATA_MASK	0x00FF /* Receive Data (R) */
     54 #define DL_RBUF_BITS	"\20\15PARITY_ERR\16FRAMING_ERR\17OVERRUN_ERR\20ERR\n"
     55 
     56 /* XCSR bits */
     57 
     58 #define DL_XCSR_TX_READY	0x0080 /* Transmitter Ready (R) */
     59 #define DL_XCSR_TXIE		0x0040 /* Transmit Interrupt Enable (R/W) */
     60 #define DL_XCSR_TX_BREAK	0x0001 /* Transmit Break (R/W) */
     61 #define DL_XCSR_BITS		"\20\1TX_BREAK\7TXIE\10TX_READY\n"
     62 
     63 /* XBUF is just data byte right justified. */
     64