/* $NetBSD: rsp.h,v 1.3 2017/05/22 17:12:11 ragge Exp $ */ /* * Copyright (c) 1995 Ludd, University of Lule}, Sweden. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * The Radial Serial Protocol (RSP) that TU58 (DECtape II) uses * is a strange animal that is sent over serial lines. * Most packet types can match the struct rsp, but some can't (i.e. * data packets). * More about RSP can be read in Digital Peripherals Handbook, p. 92. */ struct rsp { char rsp_typ; /* Packet type */ char rsp_sz; /* Packet size */ char rsp_op; /* Operation */ char rsp_mod; /* Modifier */ char rsp_drv; /* Tape drive number */ char rsp_sw; /* Switches */ char rsp_xx1; /* Unused, always zero */ char rsp_xx2; /* Unused, always zero */ short rsp_cnt; /* Byte count to transfer */ short rsp_blk; /* Block number */ short rsp_sum; /* Checksum of packet */ }; /* Types of packets */ #define RSP_TYP_DATA 001 /* DATA packet */ #define RSP_TYP_COMMAND 002 /* COMMAND packet */ #define RSP_TYP_INIT 004 /* INITIALIZE packet */ #define RSP_TYP_BOOT 010 /* BOOTSTRAP packet (PDP11) */ #define RSP_TYP_CONTINUE 020 /* CONTINUE packet */ #define RSP_TYP_XOFF 023 /* XOFF packet */ /* Operation types */ #define RSP_OP_NOP 000 /* No operation */ #define RSP_OP_RESET 001 /* Reset */ #define RSP_OP_READ 002 /* Read data */ #define RSP_OP_WRITE 003 /* Write data */ #define RSP_OP_POS 005 /* Position tape */ #define RSP_OP_DIAG 007 /* internal diagnose */ #define RSP_OP_GSTAT 010 /* Get status */ #define RSP_OP_SSTAT 011 /* Set status */ #define RSP_OP_END 0100 /* End packet */ /* Modifier */ #define RSP_MOD_VERIFY 001 /* Verify read data */ #define RSP_MOD_OK 000 /* Success */ #define RSP_MOD_RETR 001 /* Success w/ retries */ #define RSP_MOD_FAIL -1 /* Failed self-test */ #define RSP_MOD_PART -2 /* Partial operation */ #define RSP_MOD_NET -8 /* Non-existent tape drive */ #define RSP_MOD_NOC -9 /* No cartridge */ #define RSP_MOD_WP -11 /* Write protected */ #define RSP_MOD_DERR -17 /* Data error */ #define RSP_MOD_SERR -32 /* Seek error */ #define RSP_MOD_STOP -33 /* Motor stopped */ #define RSP_MOD_INVAL -48 /* Invalid opcode */ #define RSP_MOD_INVBLK -55 /* Invalid bloch number */ |