| /* sigma_pt.c: Sigma 7060 paper tape reader/punch | |
| Copyright (c) 2007-2008, 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. | |
| pt 7060 paper-tape reader/punch | |
| */ | |
| #include "sigma_io_defs.h" | |
| /* Device definitions */ | |
| #define PTR 0 | |
| #define PTP 1 | |
| /* Device states */ | |
| #define PTS_INIT 0x101 | |
| #define PTS_END 0x102 | |
| #define PTS_WRITE 0x1 | |
| #define PTS_READ 0x2 | |
| #define PTS_READI 0x82 | |
| /* Device status */ | |
| #define PTDV_PMAN 0x20 | |
| #define PTDV_RMAN 0x10 | |
| uint32 pt_cmd = 0; | |
| uint32 ptr_nzc = 0; | |
| uint32 ptr_stopioe = 1; | |
| uint32 ptp_stopioe = 1; | |
| extern uint32 chan_ctl_time; | |
| extern uint8 ascii_to_ebcdic[128]; | |
| extern uint8 ebcdic_to_ascii[256]; | |
| uint32 pt_disp (uint32 op, uint32 dva, uint32 *dvst); | |
| uint32 pt_tio_status (void); | |
| uint32 pt_tdv_status (void); | |
| t_stat pt_chan_err (uint32 st); | |
| t_stat pt_svc (UNIT *uptr); | |
| t_stat pt_reset (DEVICE *dptr); | |
| t_stat pt_attach (UNIT *uptr, char *cptr); | |
| /* PT data structures | |
| pt_dev PT device descriptor | |
| pt_unit PT unit descriptors | |
| pt_reg PT register list | |
| pt_mod PT modifiers list | |
| */ | |
| dib_t pt_dib = { DVA_PT, pt_disp }; | |
| UNIT pt_unit[] = { | |
| { UDATA (&pt_svc, UNIT_ATTABLE+UNIT_SEQ+UNIT_ROABLE, 0), SERIAL_IN_WAIT }, | |
| { UDATA (&pt_svc, UNIT_ATTABLE+UNIT_SEQ, 0), SERIAL_OUT_WAIT } | |
| }; | |
| REG pt_reg[] = { | |
| { HRDATA (CMD, pt_cmd, 9) }, | |
| { FLDATA (NZC, ptr_nzc,0) }, | |
| { DRDATA (RPOS, pt_unit[PTR].pos, T_ADDR_W), PV_LEFT }, | |
| { DRDATA (RTIME, pt_unit[PTR].wait, 24), PV_LEFT }, | |
| { FLDATA (RSTOP_IOE, ptr_stopioe, 0) }, | |
| { DRDATA (PPOS, pt_unit[PTP].pos, T_ADDR_W), PV_LEFT }, | |
| { DRDATA (PTIME, pt_unit[PTP].wait, 24), REG_NZ + PV_LEFT }, | |
| { FLDATA (PSTOP_IOE, ptp_stopioe, 0) }, | |
| { HRDATA (DEVNO, pt_dib.dva, 12), REG_HRO }, | |
| { NULL } | |
| }; | |
| MTAB pt_mod[] = { | |
| { MTAB_XTD|MTAB_VDV, 0, "CHAN", "CHAN", | |
| &io_set_dvc, &io_show_dvc, NULL }, | |
| { MTAB_XTD|MTAB_VDV, 0, "DVA", "DVA", | |
| &io_set_dva, &io_show_dva, NULL }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_NMO, 0, "CSTATE", NULL, | |
| NULL, &io_show_cst, NULL }, | |
| { 0 } | |
| }; | |
| DEVICE pt_dev = { | |
| "PT", pt_unit, pt_reg, pt_mod, | |
| 2, 10, 31, 1, 16, 8, | |
| NULL, NULL, &pt_reset, | |
| &io_boot, &pt_attach, NULL, | |
| &pt_dib, DEV_DISABLE | |
| }; | |
| /* Reader/punch: IO dispatch routine */ | |
| uint32 pt_disp (uint32 op, uint32 dva, uint32 *dvst) | |
| { | |
| switch (op) { /* case on op */ | |
| case OP_SIO: /* start I/O */ | |
| *dvst = pt_tio_status (); /* get status */ | |
| if ((*dvst & DVS_DST) == 0) { /* idle? */ | |
| pt_cmd = PTS_INIT; /* start dev thread */ | |
| sim_activate (&pt_unit[PTR], chan_ctl_time); | |
| } | |
| break; | |
| case OP_TIO: /* test status */ | |
| *dvst = pt_tio_status (); /* return status */ | |
| break; | |
| case OP_TDV: /* test status */ | |
| *dvst = pt_tdv_status (); /* return status */ | |
| break; | |
| case OP_HIO: /* halt I/O */ | |
| chan_clr_chi (pt_dib.dva); /* clr int*/ | |
| *dvst = pt_tio_status (); /* get status */ | |
| if ((*dvst & DVS_DST) != 0) { /* busy? */ | |
| sim_cancel (&pt_unit[PTR]); /* stop dev thread */ | |
| chan_uen (pt_dib.dva); /* uend */ | |
| } | |
| break; | |
| case OP_AIO: /* acknowledge int */ | |
| chan_clr_chi (pt_dib.dva); /* clr int*/ | |
| *dvst = 0; /* no status */ | |
| break; | |
| default: | |
| *dvst = 0; | |
| return SCPE_IERR; | |
| } | |
| return 0; | |
| } | |
| /* Service routine */ | |
| t_stat pt_svc (UNIT *uptr) | |
| { | |
| int32 c; | |
| uint32 cmd; | |
| uint32 st; | |
| switch (pt_cmd) { /* case on state */ | |
| case PTS_INIT: /* I/O init */ | |
| st = chan_get_cmd (pt_dib.dva, &cmd); /* get command */ | |
| if (CHS_IFERR (st)) /* channel error? */ | |
| return pt_chan_err (st); | |
| if ((cmd == PTS_WRITE) || /* valid command? */ | |
| ((cmd & 0x7F) == PTS_READ)) | |
| pt_cmd = cmd; /* next state */ | |
| else pt_cmd = PTS_END; /* no, end state */ | |
| sim_activate (uptr, chan_ctl_time); /* continue thread */ | |
| break; | |
| case PTS_READ: | |
| case PTS_READI: | |
| sim_activate (uptr, uptr->wait); /* continue thread */ | |
| if ((uptr->flags & UNIT_ATT) == 0) /* not attached? */ | |
| return ptr_stopioe? SCPE_UNATT: SCPE_OK; | |
| if ((c = getc (uptr->fileref)) == EOF) { /* read char */ | |
| if (feof (uptr->fileref)) { /* end of file? */ | |
| chan_set_chf (pt_dib.dva, CHF_LNTE); /* length error */ | |
| pt_cmd = PTS_END; /* end state */ | |
| break; | |
| } | |
| else { /* real error */ | |
| sim_perror ("PTR I/O error"); | |
| clearerr (uptr->fileref); | |
| chan_set_chf (pt_dib.dva, CHF_XMDE); /* data error */ | |
| return pt_chan_err (SCPE_IOERR); /* force uend */ | |
| } | |
| } | |
| uptr->pos = uptr->pos + 1; | |
| if (c != 0) /* leader done? */ | |
| ptr_nzc = 1; /* set flag */ | |
| if ((pt_cmd == PTS_READI) || ptr_nzc) { | |
| st = chan_WrMemB (pt_dib.dva, c); /* write to memory */ | |
| if (CHS_IFERR (st)) /* channel error? */ | |
| return pt_chan_err (st); | |
| if (st == CHS_ZBC) /* bc == 0? */ | |
| pt_cmd = PTS_END; /* end state */ | |
| } | |
| break; | |
| case PTS_WRITE: /* write */ | |
| sim_activate (uptr, pt_unit[PTP].wait); /* continue thread */ | |
| if ((pt_unit[PTP].flags & UNIT_ATT) == 0) /* not attached? */ | |
| return ptp_stopioe? SCPE_UNATT: SCPE_OK; | |
| st = chan_RdMemB (pt_dib.dva, &c); /* read from channel */ | |
| if (CHS_IFERR (st)) /* channel error? */ | |
| return pt_chan_err (st); | |
| if (putc (c, pt_unit[PTP].fileref) == EOF) { | |
| sim_perror ("PTP I/O error"); | |
| clearerr (pt_unit[PTP].fileref); | |
| chan_set_chf (pt_dib.dva, CHF_XMDE); /* data error */ | |
| return pt_chan_err (SCPE_IOERR); /* force uend */ | |
| } | |
| pt_unit[PTP].pos = pt_unit[PTP].pos + 1; | |
| if (st == CHS_ZBC) /* bc == 0? */ | |
| pt_cmd = PTS_END; /* end state */ | |
| break; | |
| case PTS_END: /* command done */ | |
| st = chan_end (pt_dib.dva); /* set channel end */ | |
| if (CHS_IFERR (st)) /* channel error? */ | |
| return pt_chan_err (st); | |
| if (st == CHS_CCH) { /* command chain? */ | |
| pt_cmd = PTS_INIT; /* restart thread */ | |
| sim_activate (uptr, chan_ctl_time); | |
| } | |
| break; | |
| } | |
| return SCPE_OK; | |
| } | |
| /* PT status routine */ | |
| uint32 pt_tio_status (void) | |
| { | |
| uint32 st; | |
| if (((pt_unit[PTR].flags & UNIT_ATT) == 0) || /* rdr not att? */ | |
| ((pt_unit[PTP].flags & UNIT_ATT) == 0)) /* pun not att? */ | |
| st = 0; | |
| else st = DVS_AUTO; /* otherwise ok */ | |
| if (sim_is_active (&pt_unit[PTR])) /* dev busy? */ | |
| st |= (DVS_CBUSY | DVS_DBUSY | (CC2 << DVT_V_CC)); | |
| return st; | |
| } | |
| uint32 pt_tdv_status (void) | |
| { | |
| uint32 st; | |
| st = 0; | |
| if ((pt_unit[PTR].flags & UNIT_ATT) == 0) /* rdr not att? */ | |
| st |= PTDV_RMAN; | |
| if ((pt_unit[PTP].flags & UNIT_ATT) == 0) /* pun not att? */ | |
| st |= PTDV_PMAN; | |
| return st; | |
| } | |
| /* Channel error */ | |
| t_stat pt_chan_err (uint32 st) | |
| { | |
| sim_cancel (&pt_unit[PTR]); /* stop dev thread */ | |
| chan_uen (pt_dib.dva); /* uend */ | |
| if (st < CHS_ERR) | |
| return st; | |
| return SCPE_OK; | |
| } | |
| /* Reset routine */ | |
| t_stat pt_reset (DEVICE *dptr) | |
| { | |
| sim_cancel (&pt_unit[PTR]); /* stop dev thread */ | |
| pt_cmd = 0; | |
| chan_reset_dev (pt_dib.dva); /* clr int, active */ | |
| return SCPE_OK; | |
| } | |
| /* Attach routine */ | |
| t_stat pt_attach (UNIT *uptr, char *cptr) | |
| { | |
| t_stat st; | |
| st = attach_unit (uptr, cptr); | |
| if ((uptr == &pt_unit[PTR]) && (st == SCPE_OK)) | |
| ptr_nzc = 0; | |
| return st; | |
| } |