| /* i7090_drum.c: IBM 7090 Drum | |
| Copyright (c) 2005-2016, Richard Cornwell | |
| 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 | |
| RICHARD CORNWELL 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. | |
| This supports the direct channel and 704 type drums. | |
| */ | |
| #include "i7090_defs.h" | |
| #ifdef NUM_DEVS_DR | |
| #define UNIT_DRM UNIT_ATTABLE | UNIT_DISABLE | UNIT_FIX | \ | |
| UNIT_BUFABLE | UNIT_MUSTBUF | |
| /* Device status information stored in u5 */ | |
| #define DRMSTA_READ 000001 /* Unit is in read */ | |
| #define DRMSTA_WRITE 000002 /* Unit is in write */ | |
| #define DRMSTA_CMD 000004 /* Unit has recieved a cmd */ | |
| #define DRMSTA_UNIT 000170 /* Unit mask */ | |
| #define DRMSTA_UNITSHIFT 3 | |
| #define DRMSTA_START 000200 /* Drum has started to transfer */ | |
| #define DRMWORDTIME us_to_ticks(96) /* Number of cycles per drum word */ | |
| #define DRMSIZE 2048 /* Number words per drum */ | |
| #define DRMMASK (DRMSIZE-1)/* Mask of drum address */ | |
| uint32 drm_cmd(UNIT *, uint16, uint16); | |
| t_stat drm_srv(UNIT *); | |
| t_stat drm_boot(int32, DEVICE *); | |
| void drm_ini(UNIT *, t_bool); | |
| t_stat drm_reset(DEVICE *); | |
| extern t_stat chan_boot(int32, DEVICE *); | |
| uint32 drum_addr; /* Read/write drum address */ | |
| t_stat set_units(UNIT * uptr, int32 val, CONST char *cptr, | |
| void *desc); | |
| t_stat drm_attach(UNIT * uptr, CONST char *file); | |
| t_stat drm_detach(UNIT * uptr); | |
| t_stat get_units(FILE * st, UNIT * uptr, int32 v, CONST void *desc); | |
| t_stat drm_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, | |
| const char *cptr); | |
| const char *drm_description (DEVICE *dptr); | |
| UNIT drm_unit[] = { | |
| {UDATA(&drm_srv, UNIT_S_CHAN(0) | UNIT_DRM, NUM_UNITS_DR * DRMSIZE), 0, | |
| NUM_UNITS_DR}, | |
| }; | |
| MTAB drm_mod[] = { | |
| {MTAB_XTD | MTAB_VUN | MTAB_VALR, 0, "UNITS", "UNITS", &set_units, | |
| &get_units, NULL}, | |
| #if NUM_CHAN != 1 | |
| {MTAB_XTD | MTAB_VUN | MTAB_VALR, 0, "CHAN", "CHAN", &set_chan, &get_chan, | |
| NULL}, | |
| #endif | |
| {0} | |
| }; | |
| DEVICE drm_dev = { | |
| "DR", drm_unit, NULL /* Registers */ , drm_mod, | |
| NUM_DEVS_DR, 8, 15, 1, 8, 36, | |
| NULL, NULL, &drm_reset, &drm_boot, &drm_attach, &drm_detach, | |
| &drm_dib, DEV_DISABLE | DEV_DEBUG, 0, dev_debug, | |
| NULL, NULL, &drm_help, NULL, NULL, &drm_description | |
| }; | |
| uint32 drm_cmd(UNIT * uptr, uint16 cmd, uint16 dev) | |
| { | |
| int chan = UNIT_G_CHAN(uptr->flags); | |
| int u = dev; | |
| u -= drm_dib.addr; | |
| if (u > uptr->u3) | |
| return SCPE_NODEV; | |
| if ((uptr->flags & UNIT_ATT) != 0) { | |
| switch (cmd) { | |
| case IO_RDS: | |
| /* Start device */ | |
| uptr->u5 = DRMSTA_READ | DRMSTA_CMD; | |
| sim_debug(DEBUG_CMD, &drm_dev, "RDS %o\n", dev); | |
| chan_set_sel(chan, 0); | |
| break; | |
| case IO_WRS: | |
| /* Start device */ | |
| uptr->u5 = DRMSTA_WRITE | DRMSTA_CMD; | |
| sim_debug(DEBUG_CMD, &drm_dev, "WRS %o\n", dev); | |
| chan_set_sel(chan, 1); | |
| break; | |
| default: | |
| return SCPE_IOERR; | |
| } | |
| /* Choose which part to use */ | |
| uptr->u5 |= u << DRMSTA_UNITSHIFT; | |
| drum_addr = 0; /* Set drum address */ | |
| chan_clear_status(chan); | |
| /* Make sure drum is spinning */ | |
| sim_activate(uptr, us_to_ticks(100)); | |
| return SCPE_OK; | |
| } | |
| return SCPE_IOERR; | |
| } | |
| t_stat drm_srv(UNIT * uptr) | |
| { | |
| int chan = UNIT_G_CHAN(uptr->flags); | |
| t_uint64 *buf = (t_uint64*)uptr->filebuf; | |
| t_stat r; | |
| uptr->u6++; /* Adjust rotation */ | |
| uptr->u6 &= DRMMASK; | |
| /* Channel has disconnected, abort current read. */ | |
| if (uptr->u5 & DRMSTA_CMD && chan_stat(chan, DEV_DISCO)) { | |
| uptr->u5 = 0; | |
| chan_clear(chan, DEV_WEOR | DEV_SEL | STA_ACTIVE); | |
| sim_debug(DEBUG_CHAN, &drm_dev, "Disconnect\n"); | |
| } | |
| /* Check if we have a address match */ | |
| if ((chan_flags[chan] & (STA_ACTIVE | DEV_SEL)) == (STA_ACTIVE | DEV_SEL) | |
| && (uptr->u5 & (DRMSTA_READ | DRMSTA_WRITE)) | |
| && (uint32)uptr->u6 == (drum_addr & DRMMASK)) { | |
| uint32 addr = | |
| (((uptr->u5 & DRMSTA_UNIT) >> DRMSTA_UNITSHIFT) << 11) | |
| + (drum_addr & DRMMASK); | |
| /* Try and transfer a word of data */ | |
| if (uptr->u5 & DRMSTA_READ) { | |
| r = chan_write(chan, &buf[addr], DEV_DISCO); | |
| } else { | |
| if (addr >= uptr->hwmark) | |
| uptr->hwmark = (uint32)addr + 1; | |
| r = chan_read(chan, &buf[addr], DEV_DISCO); | |
| } | |
| switch (r) { | |
| case DATA_OK: | |
| sim_debug(DEBUG_DATA, &drm_dev, "loc %6o data %012llo\n", addr, | |
| buf[addr]); | |
| addr++; | |
| addr &= DRMMASK; | |
| drum_addr &= ~DRMMASK; | |
| drum_addr |= addr; | |
| break; | |
| case END_RECORD: | |
| case TIME_ERROR: | |
| /* If no data, disconnect */ | |
| sim_debug(DEBUG_DATA, &drm_dev, "loc %6o missed\n", addr); | |
| chan_clear(chan, STA_ACTIVE | DEV_SEL); | |
| uptr->u5 = DRMSTA_CMD; | |
| break; | |
| } | |
| } | |
| /* Increase delay for index time */ | |
| if (uptr->u6 == 0) | |
| sim_activate(uptr, us_to_ticks(120)); | |
| else | |
| sim_activate(uptr, DRMWORDTIME); | |
| return SCPE_OK; | |
| } | |
| /* Boot from given device */ | |
| t_stat | |
| drm_boot(int32 unit_num, DEVICE * dptr) | |
| { | |
| UNIT *uptr = &dptr->units[unit_num]; | |
| t_uint64 *buf = (t_uint64*)uptr->filebuf; | |
| int addr; | |
| if ((uptr->flags & UNIT_ATT) == 0) | |
| return SCPE_UNATT; /* attached? */ | |
| /* Init for a read */ | |
| if (drm_cmd(uptr, IO_RDS, 0301) != SCPE_OK) | |
| return STOP_IONRDY; | |
| /* Copy first three records. */ | |
| addr = 0; | |
| M[0] = buf[addr++]; | |
| M[1] = buf[addr++]; | |
| drum_addr = 2; | |
| return chan_boot(unit_num, dptr); | |
| } | |
| void | |
| drm_ini(UNIT * uptr, t_bool f) | |
| { | |
| uptr->u5 = 0; | |
| } | |
| t_stat | |
| drm_reset(DEVICE * dptr) | |
| { | |
| return SCPE_OK; | |
| } | |
| /* Sets the number of drum units */ | |
| t_stat | |
| set_units(UNIT * uptr, int32 val, CONST char *cptr, void *desc) | |
| { | |
| int i; | |
| if (cptr == NULL) | |
| return SCPE_ARG; | |
| if (uptr == NULL) | |
| return SCPE_IERR; | |
| if (uptr->flags & UNIT_ATT) | |
| return SCPE_ALATT; | |
| i = 0; | |
| while (*cptr != '\0') { | |
| if (*cptr < '0' || *cptr > '9') | |
| return SCPE_ARG; | |
| i = (i * 10) + (*cptr++) - '0'; | |
| } | |
| if (i < 0 || i > NUM_UNITS_DR) | |
| return SCPE_ARG; | |
| uptr->capac = i * 2048; | |
| uptr->u3 = i; | |
| return SCPE_OK; | |
| } | |
| t_stat | |
| get_units(FILE * st, UNIT * uptr, int32 v, CONST void *desc) | |
| { | |
| if (uptr == NULL) | |
| return SCPE_IERR; | |
| fprintf(st, "Units=%d", uptr->u3); | |
| return SCPE_OK; | |
| } | |
| t_stat | |
| drm_attach(UNIT * uptr, CONST char *file) | |
| { | |
| t_stat r; | |
| if ((r = attach_unit(uptr, file)) != SCPE_OK) | |
| return r; | |
| return SCPE_OK; | |
| } | |
| t_stat | |
| drm_detach(UNIT * uptr) | |
| { | |
| sim_cancel(uptr); | |
| return detach_unit(uptr); | |
| } | |
| t_stat | |
| drm_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr) | |
| { | |
| const char *cpu = cpu_description(&cpu_dev); | |
| DIB *dibp = (DIB *) dptr->ctxt; | |
| int ctype = dibp->ctype; | |
| fprintf (st, "%s\n\n", drm_description(dptr)); | |
| fprintf (st, "Up to %d units of drum could be used\n", NUM_UNITS_DR); | |
| fprintf (st, " sim> set %s UNITS=n to set number of units\n", dptr->name); | |
| help_set_chan_type(st, dptr, "Drums"); | |
| fprintf (st, "Drums could be booted\n"); | |
| fprint_set_help(st, dptr); | |
| fprint_show_help(st, dptr); | |
| return SCPE_OK; | |
| } | |
| const char * | |
| drm_description (DEVICE *dptr) | |
| { | |
| return "IBM 704/709 Drum"; | |
| } | |
| #endif | |