1 /* $NetBSD: rsp.h,v 1.3 2017/05/22 17:12:11 ragge Exp $ */ 2 /* 3 * Copyright (c) 1995 Ludd, University of Lule}, Sweden. 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 28 /* 29 * The Radial Serial Protocol (RSP) that TU58 (DECtape II) uses 30 * is a strange animal that is sent over serial lines. 31 * Most packet types can match the struct rsp, but some can't (i.e. 32 * data packets). 33 * More about RSP can be read in Digital Peripherals Handbook, p. 92. 34 */ 35 36 struct rsp { 37 char rsp_typ; /* Packet type */ 38 char rsp_sz; /* Packet size */ 39 char rsp_op; /* Operation */ 40 char rsp_mod; /* Modifier */ 41 char rsp_drv; /* Tape drive number */ 42 char rsp_sw; /* Switches */ 43 char rsp_xx1; /* Unused, always zero */ 44 char rsp_xx2; /* Unused, always zero */ 45 short rsp_cnt; /* Byte count to transfer */ 46 short rsp_blk; /* Block number */ 47 short rsp_sum; /* Checksum of packet */ 48 }; 49 50 /* Types of packets */ 51 #define RSP_TYP_DATA 001 /* DATA packet */ 52 #define RSP_TYP_COMMAND 002 /* COMMAND packet */ 53 #define RSP_TYP_INIT 004 /* INITIALIZE packet */ 54 #define RSP_TYP_BOOT 010 /* BOOTSTRAP packet (PDP11) */ 55 #define RSP_TYP_CONTINUE 020 /* CONTINUE packet */ 56 #define RSP_TYP_XOFF 023 /* XOFF packet */ 57 58 /* Operation types */ 59 #define RSP_OP_NOP 000 /* No operation */ 60 #define RSP_OP_RESET 001 /* Reset */ 61 #define RSP_OP_READ 002 /* Read data */ 62 #define RSP_OP_WRITE 003 /* Write data */ 63 #define RSP_OP_POS 005 /* Position tape */ 64 #define RSP_OP_DIAG 007 /* internal diagnose */ 65 #define RSP_OP_GSTAT 010 /* Get status */ 66 #define RSP_OP_SSTAT 011 /* Set status */ 67 #define RSP_OP_END 0100 /* End packet */ 68 69 /* Modifier */ 70 #define RSP_MOD_VERIFY 001 /* Verify read data */ 71 #define RSP_MOD_OK 000 /* Success */ 72 #define RSP_MOD_RETR 001 /* Success w/ retries */ 73 #define RSP_MOD_FAIL -1 /* Failed self-test */ 74 #define RSP_MOD_PART -2 /* Partial operation */ 75 #define RSP_MOD_NET -8 /* Non-existent tape drive */ 76 #define RSP_MOD_NOC -9 /* No cartridge */ 77 #define RSP_MOD_WP -11 /* Write protected */ 78 #define RSP_MOD_DERR -17 /* Data error */ 79 #define RSP_MOD_SERR -32 /* Seek error */ 80 #define RSP_MOD_STOP -33 /* Motor stopped */ 81 #define RSP_MOD_INVAL -48 /* Invalid opcode */ 82 #define RSP_MOD_INVBLK -55 /* Invalid bloch number */ 83 84