1 /* $NetBSD: rfreg.h,v 1.5 2019/10/29 03:49:59 christos Exp $ */ 2 /* 3 * Copyright (c) 2002 Jochen Kunz. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of Jochen Kunz may not be used to endorse or promote 15 * products derived from this software without specific prior 16 * written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY JOCHEN KUNZ 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JOCHEN KUNZ 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 32 33 /* Registers in Uni/QBus I/O space. */ 34 #define RX2CS 0 /* Command and Status Register */ 35 #define RX2DB 2 /* Data Buffer Register */ 36 /* RX2DB is depending on context: */ 37 #define RX2BA 2 /* Bus Address Register */ 38 #define RX2TA 2 /* Track Address Register */ 39 #define RX2SA 2 /* Sector Address Register */ 40 #define RX2WC 2 /* Word Count Register */ 41 #define RX2ES 2 /* Error and Status Register */ 42 43 44 /* Bitdefinitions of CSR. */ 45 #define RX2CS_ERR 0x8000 /* Error RO */ 46 #define RX2CS_INIT 0x4000 /* Initialize WO */ 47 #define RX2CS_UAEBH 0x2000 /* Unibus address extension high bit WO */ 48 #define RX2CS_UAEBI 0x1000 /* Unibus address extension low bit WO */ 49 #define RX2CS_RX02 0x0800 /* RX02 RO */ 50 /* 0x0400 Not Used -- */ 51 /* 0x0200 Not Used -- */ 52 #define RX2CS_DD 0x0100 /* Double Density R/W */ 53 #define RX2CS_TR 0x0080 /* Transfer Request RO */ 54 #define RX2CS_IE 0x0040 /* Interrupt Enable R/W */ 55 #define RX2CS_DONE 0x0020 /* Done RO */ 56 #define RX2CS_US 0x0010 /* Unit Select WO */ 57 #define RX2CS_FCH 0x0008 /* Function Code high bit WO */ 58 #define RX2CS_FCM 0x0004 /* Function Code mid bit WO */ 59 #define RX2CS_FCL 0x0002 /* Function Code low bit WO */ 60 #define RX2CS_GO 0x0001 /* Go WO */ 61 #define RX2CS_NU 0x0600 /* not used bits -- */ 62 63 64 #define RX2CS_UAEB ( RX2CS_UAEBH | RX2CS_UAEBI ) 65 #define RX2CS_FC ( RX2CS_FCH | RX2CS_FCM | RX2CS_FCL ) 66 67 68 /* Commands of the controller and parameter cont. */ 69 #define RX2CS_FBUF 0x1 /* Fill Buffer, word count and bus address */ 70 #define RX2CS_EBUF 0x3 /* Empty Buffer, word count and bus address */ 71 #define RX2CS_WSEC 0x5 /* Write Sector, sector and track */ 72 #define RX2CS_RSEC 0x7 /* Read Sector, sector and track */ 73 #define RX2CS_SMD 0x9 /* Set Media Density, ??? */ 74 #define RX2CS_RSTAT 0xb /* Read Status, no params */ 75 #define RX2CS_WDDS 0xd /* Write Deleted Data Sector, sector and track */ 76 #define RX2CS_REC 0xf /* Read Error Code, bus address */ 77 #define RX2CS_MASK 0xf 78 79 80 /* Track Address Register */ 81 #define RX2TA_MASK 0x7f 82 83 84 /* Sector Address Register */ 85 #define RX2SA_MASK 0x1f 86 87 88 /* Word Count Register */ 89 #define RX2WC_MASK 0x7f 90 91 92 /* Bitdefinitions of RX2ES. */ 93 /* <15-12> Not Used -- */ 94 #define RX2ES_NEM 0x0800 /* Non-Existend Memory RO */ 95 #define RX2ES_WCO 0x0400 /* Word Count Overflow RO */ 96 /* 0x0200 Not Used RO */ 97 #define RX2ES_US 0x0010 /* Unit Select RO */ 98 #define RX2ES_RDY 0x0080 /* Ready RO */ 99 #define RX2ES_DEL 0x0040 /* Deleted Data RO */ 100 #define RX2ES_DD 0x0020 /* Double Density RO */ 101 #define RX2ES_DE 0x0010 /* Density Error RO */ 102 #define RX2ES_ACL 0x0008 /* AC Lost RO */ 103 #define RX2ES_ID 0x0004 /* Initialize Done RO */ 104 /* 0x0002 Not Used -- */ 105 #define RX2ES_CRCE 0x0001 /* CRC Error RO */ 106 #define RX2ES_NU 0xF202 /* not used bits -- */ 107 108 109 #define RX2_TRACKS 77 /* number of tracks */ 110 #define RX2_SECTORS 26 /* number of sectors / track */ 111 #define RX2_BYTE_SD 128 /* number of bytes / sector in single density */ 112 #define RX2_BYTE_DD 256 /* number of bytes / sector in double density */ 113 #define RX2_HEADS 1 /* number of heads */ 114 115