114 lines
4.5 KiB
C
114 lines
4.5 KiB
C
/* $NetBSD: rfreg.h,v 1.4 2005/12/11 12:23:29 christos Exp $ */
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/*
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* Copyright (c) 2002 Jochen Kunz.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of Jochen Kunz may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY JOCHEN KUNZ
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JOCHEN KUNZ
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Registers in Uni/QBus I/O space. */
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#define RX2CS 0 /* Command and Status Register */
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#define RX2DB 2 /* Data Buffer Register */
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/* RX2DB is depending on context: */
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#define RX2BA 2 /* Bus Address Register */
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#define RX2TA 2 /* Track Address Register */
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#define RX2SA 2 /* Sector Address Register */
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#define RX2WC 2 /* Word Count Register */
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#define RX2ES 2 /* Error and Status Register */
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/* Bitdefinitions of CSR. */
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#define RX2CS_ERR 0x8000 /* Error RO */
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#define RX2CS_INIT 0x4000 /* Initialize WO */
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#define RX2CS_UAEBH 0x2000 /* Unibus address extension high bit WO */
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#define RX2CS_UAEBI 0x1000 /* Unibus address extension low bit WO */
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#define RX2CS_RX02 0x0800 /* RX02 RO */
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/* 0x0400 Not Used -- */
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/* 0x0200 Not Used -- */
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#define RX2CS_DD 0x0100 /* Double Density R/W */
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#define RX2CS_TR 0x0080 /* Transfer Request RO */
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#define RX2CS_IE 0x0040 /* Interrupt Enable R/W */
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#define RX2CS_DONE 0x0020 /* Done RO */
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#define RX2CS_US 0x0010 /* Unit Select WO */
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#define RX2CS_FCH 0x0008 /* Function Code high bit WO */
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#define RX2CS_FCM 0x0004 /* Function Code mid bit WO */
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#define RX2CS_FCL 0x0002 /* Function Code low bit WO */
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#define RX2CS_GO 0x0001 /* Go WO */
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#define RX2CS_NU 0x0600 /* not used bits -- */
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#define RX2CS_UAEB ( RX2CS_UAEBH | RX2CS_UAEBI )
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#define RX2CS_FC ( RX2CS_FCH | RX2CS_FCM | RX2CS_FCL )
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/* Commands of the controller and parameter cont. */
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#define RX2CS_FBUF 001 /* Fill Buffer, word count and bus address */
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#define RX2CS_EBUF 003 /* Empty Buffer, word count and bus address */
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#define RX2CS_WSEC 005 /* Write Sector, sector and track */
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#define RX2CS_RSEC 007 /* Read Sector, sector and track */
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#define RX2CS_SMD 011 /* Set Media Density, ??? */
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#define RX2CS_RSTAT 013 /* Read Status, no params */
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#define RX2CS_WDDS 015 /* Write Deleted Data Sector, sector and track */
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#define RX2CS_REC 017 /* Read Error Code, bus address */
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/* Track Address Register */
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#define RX2TA_MASK 0x7f
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/* Sector Address Register */
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#define RX2SA_MASK 0x1f
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/* Word Count Register */
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#define RX2WC_MASK 0x7f
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/* Bitdefinitions of RX2ES. */
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/* <15-12> Not Used -- */
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#define RX2ES_NEM 0x0800 /* Non-Existend Memory RO */
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#define RX2ES_WCO 0x0400 /* Word Count Overflow RO */
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/* 0x0200 Not Used RO */
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#define RX2ES_US 0x0010 /* Unit Select RO */
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#define RX2ES_RDY 0x0080 /* Ready RO */
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#define RX2ES_DEL 0x0040 /* Deleted Data RO */
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#define RX2ES_DD 0x0020 /* Double Density RO */
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#define RX2ES_DE 0x0010 /* Density Error RO */
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#define RX2ES_ACL 0x0008 /* AC Lost RO */
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#define RX2ES_ID 0x0004 /* Initialize Done RO */
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/* 0x0002 Not Used -- */
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#define RX2ES_CRCE 0x0001 /* CRC Error RO */
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#define RX2ES_NU 0xF202 /* not used bits -- */
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#define RX2_TRACKS 77 /* number of tracks */
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#define RX2_SECTORS 26 /* number of sectors / track */
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#define RX2_BYTE_SD 128 /* number of bytes / sector in single density */
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#define RX2_BYTE_DD 256 /* number of bytes / sector in double density */
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#define RX2_HEADS 1 /* number of heads */
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