| /* sim_tape.h: simulator tape support library definitions | |
| Copyright (c) 1993-2006, Robert M Supnik | |
| Permission is hereby granted, free of charge, to any person obtaining a | |
| copy of this software and associated documentation files (the "Software"), | |
| to deal in the Software without restriction, including without limitation | |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| and/or sell copies of the Software, and to permit persons to whom the | |
| Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| Except as contained in this notice, the name of Robert M Supnik shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from Robert M Supnik. | |
| 30-Aug-06 JDB Added erase gap support | |
| 14-Feb-06 RMS Added variable tape capacity | |
| 17-Dec-05 RMS Added write support for Paul Pierce 7b format | |
| 02-May-05 RMS Added support for Paul Pierce 7b format | |
| */ | |
| #ifndef _SIM_TAPE_H_ | |
| #define _SIM_TAPE_H_ 0 | |
| /* SIMH/E11 tape format */ | |
| typedef uint32 t_mtrlnt; /* magtape rec lnt */ | |
| #define MTR_TMK 0x00000000 /* tape mark */ | |
| #define MTR_EOM 0xFFFFFFFF /* end of medium */ | |
| #define MTR_GAP 0xFFFFFFFE /* primary gap */ | |
| #define MTR_FHGAP 0xFFFEFFFF /* fwd half gap (overwrite) */ | |
| #define MTR_RHGAP 0xFFFF0000 /* rev half gap (overwrite) */ | |
| #define MTR_M_RHGAP (~0x000080FF) /* range mask for rev gap */ | |
| #define MTR_MAXLEN 0x00FFFFFF /* max len is 24b */ | |
| #define MTR_ERF 0x80000000 /* error flag */ | |
| #define MTR_F(x) ((x) & MTR_ERF) /* record error flg */ | |
| #define MTR_L(x) ((x) & ~MTR_ERF) /* record length */ | |
| /* TPC tape format */ | |
| typedef uint16 t_tpclnt; /* magtape rec lnt */ | |
| /* P7B tape format */ | |
| #define P7B_SOR 0x80 /* start of record */ | |
| #define P7B_PAR 0x40 /* parity */ | |
| #define P7B_DATA 0x3F /* data */ | |
| #define P7B_DPAR (P7B_PAR|P7B_DATA) /* data and parity */ | |
| #define P7B_EOF 0x0F /* eof character */ | |
| #define TPC_TMK 0x0000 /* tape mark */ | |
| /* Unit flags */ | |
| #define MTUF_V_PNU (UNIT_V_UF + 0) /* position not upd */ | |
| #define MTUF_V_WLK (UNIT_V_UF + 1) /* write locked */ | |
| #define MTUF_V_FMT (UNIT_V_UF + 2) /* tape file format */ | |
| #define MTUF_W_FMT 3 /* 3b of formats */ | |
| #define MTUF_N_FMT (1u << MTUF_W_FMT) /* number of formats */ | |
| #define MTUF_M_FMT ((1u << MTUF_W_FMT) - 1) | |
| #define MTUF_F_STD 0 /* SIMH format */ | |
| #define MTUF_F_E11 1 /* E11 format */ | |
| #define MTUF_F_TPC 2 /* TPC format */ | |
| #define MTUF_F_P7B 3 /* P7B format */ | |
| #define MUTF_F_TDF 4 /* TDF format */ | |
| #define MTUF_V_UF (MTUF_V_FMT + MTUF_W_FMT) | |
| #define MTUF_PNU (1u << MTUF_V_PNU) | |
| #define MTUF_WLK (1u << MTUF_V_WLK) | |
| #define MTUF_FMT (MTUF_M_FMT << MTUF_V_FMT) | |
| #define MTUF_WRP (MTUF_WLK | UNIT_RO) | |
| #define MT_F_STD (MTUF_F_STD << MTUF_V_FMT) | |
| #define MT_F_E11 (MTUF_F_E11 << MTUF_V_FMT) | |
| #define MT_F_TPC (MTUF_F_TPC << MTUF_V_FMT) | |
| #define MT_F_P7B (MTUF_F_P7B << MTUF_V_FMT) | |
| #define MT_F_TDF (MTUF_F_TDF << MTUF_V_FMT) | |
| #define MT_SET_PNU(u) (u)->flags = (u)->flags | MTUF_PNU | |
| #define MT_CLR_PNU(u) (u)->flags = (u)->flags & ~MTUF_PNU | |
| #define MT_TST_PNU(u) ((u)->flags & MTUF_PNU) | |
| #define MT_GET_FMT(u) (((u)->flags >> MTUF_V_FMT) & MTUF_M_FMT) | |
| /* Return status codes */ | |
| #define MTSE_OK 0 /* no error */ | |
| #define MTSE_TMK 1 /* tape mark */ | |
| #define MTSE_UNATT 2 /* unattached */ | |
| #define MTSE_IOERR 3 /* IO error */ | |
| #define MTSE_INVRL 4 /* invalid rec lnt */ | |
| #define MTSE_FMT 5 /* invalid format */ | |
| #define MTSE_BOT 6 /* beginning of tape */ | |
| #define MTSE_EOM 7 /* end of medium */ | |
| #define MTSE_RECE 8 /* error in record */ | |
| #define MTSE_WRP 9 /* write protected */ | |
| /* Prototypes */ | |
| t_stat sim_tape_attach (UNIT *uptr, char *cptr); | |
| t_stat sim_tape_detach (UNIT *uptr); | |
| t_stat sim_tape_rdrecf (UNIT *uptr, uint8 *buf, t_mtrlnt *bc, t_mtrlnt max); | |
| t_stat sim_tape_rdrecr (UNIT *uptr, uint8 *buf, t_mtrlnt *bc, t_mtrlnt max); | |
| t_stat sim_tape_wrrecf (UNIT *uptr, uint8 *buf, t_mtrlnt bc); | |
| t_stat sim_tape_wrtmk (UNIT *uptr); | |
| t_stat sim_tape_wreom (UNIT *uptr); | |
| t_stat sim_tape_wrgap (UNIT *uptr, uint32 gaplen, uint32 bpi); | |
| t_stat sim_tape_sprecf (UNIT *uptr, t_mtrlnt *bc); | |
| t_stat sim_tape_sprecr (UNIT *uptr, t_mtrlnt *bc); | |
| t_stat sim_tape_rewind (UNIT *uptr); | |
| t_stat sim_tape_reset (UNIT *uptr); | |
| t_bool sim_tape_bot (UNIT *uptr); | |
| t_bool sim_tape_wrp (UNIT *uptr); | |
| t_bool sim_tape_eot (UNIT *uptr); | |
| t_stat sim_tape_set_fmt (UNIT *uptr, int32 val, char *cptr, void *desc); | |
| t_stat sim_tape_show_fmt (FILE *st, UNIT *uptr, int32 val, void *desc); | |
| t_stat sim_tape_set_capac (UNIT *uptr, int32 val, char *cptr, void *desc); | |
| t_stat sim_tape_show_capac (FILE *st, UNIT *uptr, int32 val, void *desc); | |
| #endif |