64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* $NetBSD: dlreg.h,v 1.6 2005/12/11 12:23:29 christos Exp $ */
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/*
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* Ben Harris, 1997
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*
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* This file is in the Public Domain.
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*/
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/*
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* dlreg.h -- Definitions for the DL11 and DLV11 serial cards.
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*
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* Style in imitation of dzreg.h.
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*/
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#ifdef notdef
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union w_b
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{
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u_short word;
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struct {
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u_char byte_lo;
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u_char byte_hi;
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} bytes;
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};
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struct DLregs
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{
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volatile u_short dl_rcsr; /* Receive Control/Status Register (R/W) */
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volatile u_short dl_rbuf; /* Receive Buffer (R) */
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volatile u_short dl_xcsr; /* Transmit Control/Status Register (R/W) */
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volatile union w_b u_xbuf; /* Transmit Buffer (W) */
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#define dl_xbuf u_xbuf.bytes.byte_lo
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};
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typedef struct DLregs dlregs;
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#endif
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#define DL_UBA_RCSR 0
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#define DL_UBA_RBUF 2
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#define DL_UBA_XCSR 4
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#define DL_UBA_XBUFL 6
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/* RCSR bits */
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#define DL_RCSR_RX_DONE 0x0080 /* Receiver Done (R) */
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#define DL_RCSR_RXIE 0x0040 /* Receiver Interrupt Enable (R/W) */
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#define DL_RCSR_READER_ENABLE 0x0001 /* [paper-tape] Reader Enable (W) */
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#define DL_RCSR_BITS "\20\1READER_ENABLE\7RXIE\10RX_DONE\n"
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/* RBUF bits */
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#define DL_RBUF_ERR 0x8000 /* Error (R) */
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#define DL_RBUF_OVERRUN_ERR 0x4000 /* Overrun Error (R) */
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#define DL_RBUF_FRAMING_ERR 0x2000 /* Framing Error (R) */
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#define DL_RBUF_PARITY_ERR 0x1000 /* Parity Error (R) */
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#define DL_RBUF_DATA_MASK 0x00FF /* Receive Data (R) */
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#define DL_RBUF_BITS "\20\15PARITY_ERR\16FRAMING_ERR\17OVERRUN_ERR\20ERR\n"
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/* XCSR bits */
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#define DL_XCSR_TX_READY 0x0080 /* Transmitter Ready (R) */
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#define DL_XCSR_TXIE 0x0040 /* Transmit Interrupt Enable (R/W) */
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#define DL_XCSR_TX_BREAK 0x0001 /* Transmit Break (R/W) */
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#define DL_XCSR_BITS "\20\1TX_BREAK\7TXIE\10TX_READY\n"
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/* XBUF is just data byte right justified. */
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