79 lines
2.9 KiB
C
79 lines
2.9 KiB
C
/* $NetBSD: crl.h,v 1.2 1999/04/12 20:57:52 pk Exp $ */
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/*
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* @(#)crl.h 7.1 (Berkeley) 6/5/86
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*/
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/****************************************************************
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* *
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* Licensed from Digital Equipment Corporation *
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* Copyright (c) *
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* Digital Equipment Corporation *
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* Maynard, Massachusetts *
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* 1985, 1986 *
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* All rights reserved. *
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* *
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* The Information in this software is subject to change *
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* without notice and should not be construed as a commitment *
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* by Digital Equipment Corporation. Digital makes no *
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* representations about the suitability of this software for *
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* any purpose. It is supplied "As Is" without expressed or *
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* implied warranty. *
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* *
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* If the Regents of the University of California or its *
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* licensees modify the software in a manner creating *
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* derivative copyright rights, appropriate copyright *
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* legends may be placed on the derivative work in addition *
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* to that set forth above. *
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****************************************************************/
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/*
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* Console RL02 status of current transfer (read only)
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*/
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#define CRL_S_XCMPLT 1 /* transaction complete */
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#define CRL_S_XCONT 2 /* continue transaction */
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#define CRL_S_ABORT 3 /* transation abort */
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#define CRL_S_RETSTS 4 /* return device status */
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#define CRL_S_HNDSHK 0x80 /* handshake err during transaction */
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#define CRL_S_HWERR 0x81 /* hardware err during transaction */
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/*
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* Console RL02 function codes
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*/
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#define CRL_F_NOOP 0 /* No operation */
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#define CRL_F_RSTSTS 2 /* reset and return device status */
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#define CRL_F_ABORT 3 /* abort transfer */
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#define CRL_F_RETSTS 4 /* read device status */
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#define CRL_F_WRITE 5 /* write block data */
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#define CRL_F_READ 6 /* read block data */
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/*
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* Console sectoring information.
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* The console understands the rl02 as having 512 byte sectors.
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*/
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#define CRLBYSEC 512 /* bytes/sector */
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#define MAXSEC 20480 /* sectors/rl02 */
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/*
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* STXCS bit definitions
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*/
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#define STXCS_RDY 0x00000080 /* ready bit */
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#define STXCS_IE 0x00000040 /* interrupt enable */
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#define CRLERRS 5 /* number of retries before quitting */
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/*
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* The state byte is used to retain exclusivity,
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* and contains the busy flag.
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*/
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#define CRL_IDLE 0
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#define CRL_OPEN 1
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#define CRL_BUSY 2
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#define CRLDS_BITS \
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"\20\20WDE\17CHE\16WL\15SKTO\14SPE\13WGE\12VC\11DSE\
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\10DT\7HS\6CO\5HO\4BH\3STC\2STB\1STA"
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#define CRLCS_BITS \
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"\20\20CE\17DE\16NXM\15DLT\14DCRC\13OPI\1DRDY"
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