| /* pdp11_dc.c: PDP-11 DC11 multiple terminal interface simulator | |
| Copyright (c) 1993-2013, 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. | |
| dci,dco DC11 terminal input/output | |
| 11-Oct-2013 RMS Poll DCI immediately after attach to pick up connect | |
| 18-Apr-2012 RMS Modified to use clock coscheduling | |
| 17-Aug-2011 RMS Added AUTOCONFIGURE modifier | |
| 19-Nov-2008 RMS Revised for common TMXR show routines | |
| Revised to autoconfigure vectors | |
| The simulator supports both hardwired and modem-like behavior. If modem | |
| control is not enabled, carrier detect, ring, and carrier change are | |
| never set. | |
| */ | |
| #if defined (VM_PDP10) /* PDP10 version */ | |
| #error "DC11 is not supported on the PDP-10!" | |
| #elif defined (VM_VAX) /* VAX version */ | |
| #error "DC11 is not supported on the VAX!" | |
| #else /* PDP-11 version */ | |
| #include "pdp11_defs.h" | |
| #endif | |
| #include "sim_sock.h" | |
| #include "sim_tmxr.h" | |
| #define DCX_MAXMUX (dcx_desc.lines - 1) | |
| /* Parity and modem control */ | |
| #define DCX_V_OPAR (TTUF_V_UF + 0) | |
| #define DCX_V_EPAR (TTUF_V_UF + 1) | |
| #define DCX_V_MDM (TTUF_V_UF + 2) | |
| #define DCX_OPAR (1u << DCX_V_OPAR) | |
| #define DCX_EPAR (1u << DCX_V_EPAR) | |
| #define DCX_MDM (1u << DCX_V_MDM) | |
| /* registers */ | |
| #define DCICSR_RD 0173777 | |
| #define DCICSR_WR 0003533 | |
| #define DCICSR_DTR 0000001 /* DTR (RW) */ | |
| #define DCICSR_XBR 0000002 /* xmit brk (RWNI) */ | |
| #define DCICSR_CDT 0000004 /* car det (RO) */ | |
| #define DCICSR_PAR 0000040 /* odd par (RO) */ | |
| #define DCICSR_OVR 0010000 /* overrun (RO) */ | |
| #define DCICSR_RNG 0020000 /* ring (RO) */ | |
| #define DCICSR_CCH 0040000 /* car change (RO) */ | |
| #define DCICSR_ALLERR (DCICSR_OVR|DCICSR_RNG|DCICSR_CCH) | |
| #define DCICSR_ERR 0100000 /* error */ | |
| #define DCOCSR_RD 0100737 | |
| #define DCOCSR_WR 0000535 | |
| #define DCOCSR_RTS 0000001 /* req to send (RW) */ | |
| #define DCOCSR_CTS 0000002 /* clr to send (RO) */ | |
| #define DCOCSR_MNT 0000004 /* maint (RWNI) */ | |
| extern int32 int_req[IPL_HLVL]; | |
| extern int32 tmxr_poll; | |
| uint16 dci_csr[DCX_LINES] = { 0 }; /* control/status */ | |
| uint8 dci_buf[DCX_LINES] = { 0 }; | |
| uint32 dci_ireq = 0; | |
| uint16 dco_csr[DCX_LINES] = { 0 }; /* control/status */ | |
| uint8 dco_buf[DCX_LINES] = { 0 }; | |
| uint32 dco_ireq = 0; | |
| TMLN dcx_ldsc[DCX_LINES] = { {0} }; /* line descriptors */ | |
| TMXR dcx_desc = { DCX_LINES, 0, 0, dcx_ldsc }; /* mux descriptor */ | |
| static const uint8 odd_par[] = { | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* 00 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* 10 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* 20 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* 30 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* 40 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* 50 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* 60 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* 70 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* 80 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* 90 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* A0 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* B0 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* C0 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* D0 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, /* E0 */ | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, | |
| 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0, /* F0 */ | |
| 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80 | |
| }; | |
| t_stat dcx_rd (int32 *data, int32 PA, int32 access); | |
| t_stat dcx_wr (int32 data, int32 PA, int32 access); | |
| t_stat dcx_reset (DEVICE *dptr); | |
| t_stat dci_svc (UNIT *uptr); | |
| t_stat dco_svc (UNIT *uptr); | |
| t_stat dcx_attach (UNIT *uptr, CONST char *cptr); | |
| t_stat dcx_detach (UNIT *uptr); | |
| t_stat dcx_set_lines (UNIT *uptr, int32 val, CONST char *cptr, void *desc); | |
| void dcx_enbdis (int32 dis); | |
| void dci_clr_int (int32 ln); | |
| void dci_set_int (int32 ln); | |
| int32 dci_iack (void); | |
| void dco_clr_int (int32 ln); | |
| void dco_set_int (int32 ln); | |
| int32 dco_iack (void); | |
| void dcx_reset_ln (int32 ln); | |
| t_stat dcx_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr); | |
| const char *dcx_description (DEVICE *dptr); | |
| /* DCI data structures | |
| dci_dev DCI device descriptor | |
| dci_unit DCI unit descriptor | |
| dci_reg DCI register list | |
| */ | |
| #define IOLN_DC 010 | |
| DIB dci_dib = { | |
| IOBA_AUTO, IOLN_DC * DCX_LINES, &dcx_rd, &dcx_wr, | |
| 2, IVCL (DCI), VEC_AUTO, { &dci_iack, &dco_iack }, IOLN_DC, | |
| }; | |
| UNIT dci_unit = { UDATA (&dci_svc, 0, 0), TMLN_SPD_9600_BPS }; | |
| REG dci_reg[] = { | |
| { BRDATAD (BUF, dci_buf, DEV_RDX, 8, DCX_LINES, "input control/stats register") }, | |
| { BRDATAD (CSR, dci_csr, DEV_RDX, 16, DCX_LINES, "input buffer") }, | |
| { GRDATAD (IREQ, dci_ireq, DEV_RDX, DCX_LINES, 0, "interrupt requests") }, | |
| { DRDATAD (TIME, dci_unit.wait, 24, "input polling interval"), PV_LEFT }, | |
| { DRDATA (LINES, dcx_desc.lines, 6), REG_HRO }, | |
| { GRDATA (DEVADDR, dci_dib.ba, DEV_RDX, 32, 0), REG_HRO }, | |
| { GRDATA (DEVIOLN, dci_dib.lnt, DEV_RDX, 32, 0), REG_HRO }, | |
| { GRDATA (DEVVEC, dci_dib.vec, DEV_RDX, 16, 0), REG_HRO }, | |
| { NULL } | |
| }; | |
| MTAB dci_mod[] = { | |
| { MTAB_XTD|MTAB_VDV|MTAB_VALR, 1, NULL, "DISCONNECT", | |
| &tmxr_dscln, NULL, &dcx_desc, "Disconnect a specific line" }, | |
| { UNIT_ATT, UNIT_ATT, "summary", NULL, | |
| NULL, &tmxr_show_summ, (void *) &dcx_desc, "Display a summary of line states" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_NMO, 1, "CONNECTIONS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &dcx_desc, "Display current connections" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_NMO, 0, "STATISTICS", NULL, | |
| NULL, &tmxr_show_cstat, (void *) &dcx_desc, "Display multiplexer statistics" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_VALR, 010, "ADDRESS", "ADDRESS", | |
| &set_addr, &show_addr, NULL, "Bus address" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_VALR, 1, "VECTOR", "VECTOR", | |
| &set_vec, &show_vec_mux, (void *) &dcx_desc, "Interrupt vector" }, | |
| { MTAB_XTD|MTAB_VDV|MTAB_VALR, 0, "LINES", "LINES=n", | |
| &dcx_set_lines, &tmxr_show_lines, (void *) &dcx_desc, "Display number of lines" }, | |
| { 0 } | |
| }; | |
| DEVICE dci_dev = { | |
| "DCI", &dci_unit, dci_reg, dci_mod, | |
| 1, 10, 31, 1, 8, 8, | |
| NULL, NULL, &dcx_reset, | |
| NULL, &dcx_attach, &dcx_detach, | |
| &dci_dib, DEV_UBUS | DEV_QBUS | DEV_DISABLE | DEV_DIS | DEV_MUX, | |
| 0, NULL, NULL, NULL, | |
| &dcx_help, NULL, /* help and attach_help routines */ | |
| (void *)&dcx_desc, /* help context variable */ | |
| &dcx_description /* description routine */ | |
| }; | |
| /* DCO data structures | |
| dco_dev DCO device descriptor | |
| dco_unit DCO unit descriptor | |
| dco_reg DCO register list | |
| */ | |
| UNIT dco_unit[] = { | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT }, | |
| { UDATA (&dco_svc, TT_MODE_7P+DCX_EPAR+DCX_MDM, 0), SERIAL_OUT_WAIT } | |
| }; | |
| REG dco_reg[] = { | |
| { BRDATAD (BUF, dco_buf, DEV_RDX, 8, DCX_LINES, "control/stats register") }, | |
| { BRDATAD (CSR, dco_csr, DEV_RDX, 16, DCX_LINES, "buffer") }, | |
| { GRDATAD (IREQ, dco_ireq, DEV_RDX, DCX_LINES, 0, "interrupt requests") }, | |
| { URDATAD (TIME, dco_unit[0].wait, 10, 31, 0, | |
| DCX_LINES, PV_LEFT, "time from I/O initiation to interrupt") }, | |
| { NULL } | |
| }; | |
| MTAB dco_mod[] = { | |
| { TT_MODE, TT_MODE_UC, "UC", "UC", NULL, NULL, NULL, "lower case converted to upper, high bit cleared" }, | |
| { TT_MODE, TT_MODE_7B, "7b", "7B", NULL, NULL, NULL, "7 bit mode" }, | |
| { TT_MODE, TT_MODE_8B, "8b", "8B", NULL, NULL, NULL, "8 bit mode" }, | |
| { TT_MODE, TT_MODE_7P, "7p", "7P", NULL, NULL, NULL, "7 bit mode - non printing suppressed" }, | |
| { DCX_OPAR+DCX_EPAR, 0, "no parity", "NOPARITY", NULL }, | |
| { DCX_OPAR+DCX_EPAR, DCX_OPAR, "odd parity", "ODDPARITY", NULL }, | |
| { DCX_OPAR+DCX_EPAR, DCX_EPAR, "even parity", "EVENPARITY", NULL }, | |
| { DCX_MDM, 0, "no dataset", "NODATASET", NULL }, | |
| { DCX_MDM, DCX_MDM, "dataset", "DATASET", NULL }, | |
| { MTAB_XTD|MTAB_VUN, 1, NULL, "DISCONNECT", | |
| &tmxr_dscln, NULL, &dcx_desc, "Disconnect a specific line" }, | |
| { MTAB_XTD|MTAB_VUN|MTAB_NC, 0, NULL, "LOG=file", | |
| &tmxr_set_log, tmxr_show_log, &dcx_desc, "Display logging for designated line" }, | |
| { MTAB_XTD|MTAB_VUN, 0, NULL, "NOLOG", | |
| &tmxr_set_nolog, NULL, &dcx_desc, "Disable logging on designated line" }, | |
| { 0 } | |
| }; | |
| DEVICE dco_dev = { | |
| "DCO", dco_unit, dco_reg, dco_mod, | |
| DCX_LINES, 10, 31, 1, 8, 8, | |
| NULL, NULL, &dcx_reset, | |
| NULL, NULL, NULL, | |
| NULL, DEV_UBUS | DEV_DISABLE | DEV_DIS, | |
| 0, NULL, NULL, NULL, | |
| &dcx_help, NULL, /* help and attach_help routines */ | |
| (void *)&dcx_desc, /* help context variable */ | |
| &dcx_description /* description routine */ | |
| }; | |
| /* Terminal input routines */ | |
| t_stat dcx_rd (int32 *data, int32 PA, int32 access) | |
| { | |
| int32 ln = ((PA - dci_dib.ba) >> 3); | |
| if (ln > DCX_MAXMUX) /* validate line number */ | |
| return SCPE_IERR; | |
| switch ((PA >> 1) & 03) { /* decode PA<2:1> */ | |
| case 00: /* dci csr */ | |
| if (dci_csr[ln] & DCICSR_ALLERR) | |
| dci_csr[ln] |= DCICSR_ERR; | |
| else dci_csr[ln] &= ~DCICSR_ERR; | |
| *data = dci_csr[ln] & DCICSR_RD; | |
| dci_csr[ln] &= ~(CSR_DONE|DCICSR_ALLERR|DCICSR_ERR); | |
| return SCPE_OK; | |
| case 01: /* dci buf */ | |
| dci_clr_int (ln); | |
| *data = dci_buf[ln]; | |
| /* Reschedule the next poll preceisely so that the | |
| the programmed input speed is observed. */ | |
| sim_clock_coschedule_abs (&dci_unit, tmxr_poll); | |
| return SCPE_OK; | |
| case 02: /* dco csr */ | |
| *data = dco_csr[ln] & DCOCSR_RD; | |
| return SCPE_OK; | |
| case 03: /* dco buf */ | |
| *data = dco_buf[ln]; | |
| return SCPE_OK; | |
| } /* end switch PA */ | |
| return SCPE_NXM; | |
| } | |
| t_stat dcx_wr (int32 data, int32 PA, int32 access) | |
| { | |
| int32 ln = ((PA - dci_dib.ba) >> 3); | |
| TMLN *lp = &dcx_ldsc[ln]; | |
| if (ln > DCX_MAXMUX) /* validate line number */ | |
| return SCPE_IERR; | |
| switch ((PA >> 1) & 03) { /* decode PA<2:1> */ | |
| case 00: /* dci csr */ | |
| if (access == WRITEB) /* byte write? */ | |
| data = (PA & 1)? | |
| (dci_csr[ln] & 0377) | (data << 8): | |
| (dci_csr[ln] & ~0377) | data; | |
| if ((data & CSR_IE) == 0) /* clr ie? */ | |
| dci_clr_int (ln); /* clr int req */ | |
| else if ((dci_csr[ln] & (CSR_DONE + CSR_IE)) == CSR_DONE) | |
| dci_set_int (ln); | |
| if (((data ^ dci_csr[ln]) & DCICSR_DTR) && /* DTR change? */ | |
| (dco_unit[ln].flags & DCX_MDM)) { /* modem ctl? */ | |
| if (data & DCICSR_DTR) { /* setting DTR? */ | |
| if (lp->conn) { /* ringing? */ | |
| dci_csr[ln] = (dci_csr[ln] & ~DCICSR_RNG) | | |
| (DCICSR_CDT|DCICSR_CCH|DCICSR_ERR); | |
| dco_csr[ln] |= DCOCSR_CTS; /* set CDT,CCH,CTS */ | |
| if (data & CSR_IE) /* if ie, req int */ | |
| dci_set_int (ln); | |
| } | |
| } /* end DTR 0->1 */ | |
| else { /* clearing DTR */ | |
| if (lp->conn) { /* connected? */ | |
| tmxr_linemsg (lp, "\r\nLine hangup\r\n"); | |
| tmxr_reset_ln (lp); /* reset line */ | |
| if (dci_csr[ln] & DCICSR_CDT) { /* carrier det? */ | |
| dci_csr[ln] |= (DCICSR_CCH|DCICSR_ERR); | |
| if (data & CSR_IE) /* if ie, req int */ | |
| dci_set_int (ln); | |
| } | |
| } | |
| dci_csr[ln] &= ~(DCICSR_CDT|DCICSR_RNG); | |
| dco_csr[ln] &= ~DCOCSR_CTS; /* clr CDT,RNG,CTS */ | |
| } /* end DTR 1->0 */ | |
| } /* end DTR chg+modem */ | |
| dci_csr[ln] = (uint16) ((dci_csr[ln] & ~DCICSR_WR) | (data & DCICSR_WR)); | |
| return SCPE_OK; | |
| case 01: /* dci buf */ | |
| return SCPE_OK; | |
| case 02: /* dco csr */ | |
| if (access == WRITEB) /* byte write? */ | |
| data = (PA & 1)? | |
| (dco_csr[ln] & 0377) | (data << 8): | |
| (dco_csr[ln] & ~0377) | data; | |
| if ((data & CSR_IE) == 0) /* clr ie? */ | |
| dco_clr_int (ln); /* clr int req */ | |
| else if ((dco_csr[ln] & (CSR_DONE + CSR_IE)) == CSR_DONE) | |
| dco_set_int (ln); | |
| dco_csr[ln] = (uint16) ((dco_csr[ln] & ~DCOCSR_WR) | (data & DCOCSR_WR)); | |
| return SCPE_OK; | |
| case 03: /* dco buf */ | |
| if ((PA & 1) == 0) | |
| dco_buf[ln] = data & 0377; | |
| dco_csr[ln] &= ~CSR_DONE; /* clr done */ | |
| dco_clr_int (ln); /* clr int req */ | |
| sim_activate (&dco_unit[ln], dco_unit[ln].wait); | |
| return SCPE_OK; | |
| } /* end switch PA */ | |
| return SCPE_NXM; | |
| } | |
| /* Terminal input service */ | |
| t_stat dci_svc (UNIT *uptr) | |
| { | |
| int32 ln, c, temp; | |
| if ((uptr->flags & UNIT_ATT) == 0) /* attached? */ | |
| return SCPE_OK; | |
| ln = tmxr_poll_conn (&dcx_desc); /* look for connect */ | |
| if (ln >= 0) { /* got one? */ | |
| dcx_ldsc[ln].rcve = 1; /* set rcv enb */ | |
| if (dco_unit[ln].flags & DCX_MDM) { /* modem control? */ | |
| if (dci_csr[ln] & DCICSR_DTR) /* DTR already set? */ | |
| dci_csr[ln] |= (DCICSR_CDT|DCICSR_CCH|DCICSR_ERR); | |
| else dci_csr[ln] |= (DCICSR_RNG|DCICSR_ERR); /* no, ring */ | |
| if (dci_csr[ln] & CSR_IE) /* if ie, */ | |
| dci_set_int (ln); /* req int */ | |
| } | |
| else dco_csr[ln] |= DCOCSR_CTS; /* just connect */ | |
| } | |
| tmxr_poll_rx (&dcx_desc); /* poll for input */ | |
| for (ln = 0; ln < DCX_LINES; ln++) { /* loop thru lines */ | |
| if (dcx_ldsc[ln].conn) { /* connected? */ | |
| if ((temp = tmxr_getc_ln (&dcx_ldsc[ln])) && /* get char */ | |
| !(temp & SCPE_BREAK)) { /* not break? */ | |
| c = sim_tt_inpcvt (temp, TT_GET_MODE (dco_unit[ln].flags)); | |
| if (dci_csr[ln] & CSR_DONE) /* overrun? */ | |
| dci_csr[ln] |= DCICSR_OVR; | |
| else dci_csr[ln] |= CSR_DONE; /* set done */ | |
| if (dci_csr[ln] & CSR_IE) /* if ie, */ | |
| dci_set_int (ln); /* req int */ | |
| if (dco_unit[ln].flags & DCX_OPAR) /* odd parity */ | |
| c = (c & 0177) | odd_par[c & 0177]; | |
| else if (dco_unit[ln].flags & DCX_EPAR) /* even parity */ | |
| c = (c & 0177) | (odd_par[c & 0177] ^ 0200); | |
| dci_buf[ln] = (uint8)c; | |
| if ((c & 0200) == odd_par[c & 0177]) /* odd par? */ | |
| dci_csr[ln] |= DCICSR_PAR; | |
| else dci_csr[ln] &= ~DCICSR_PAR; | |
| } | |
| } | |
| else { /* disconnected */ | |
| if ((dco_unit[ln].flags & DCX_MDM) && /* modem control? */ | |
| (dci_csr[ln] & DCICSR_CDT)) { /* carrier detect? */ | |
| dci_csr[ln] |= (DCICSR_CCH|DCICSR_ERR); /* carrier change */ | |
| if (dci_csr[ln] & CSR_IE) /* if ie, */ | |
| dci_set_int (ln); /* req int */ | |
| } | |
| dci_csr[ln] &= ~(DCICSR_CDT|DCICSR_RNG); /* clr CDT,RNG,CTS */ | |
| dco_csr[ln] &= ~DCOCSR_CTS; | |
| } | |
| } | |
| return sim_clock_coschedule (uptr, tmxr_poll); /* continue poll */ | |
| } | |
| /* Terminal output service */ | |
| t_stat dco_svc (UNIT *uptr) | |
| { | |
| int32 c; | |
| int32 ln = uptr - dco_unit; /* line # */ | |
| if (dcx_ldsc[ln].conn) { /* connected? */ | |
| if (dcx_ldsc[ln].xmte) { /* tx enabled? */ | |
| TMLN *lp = &dcx_ldsc[ln]; /* get line */ | |
| c = sim_tt_outcvt (dco_buf[ln], TT_GET_MODE (dco_unit[ln].flags)); | |
| if (c >= 0) /* output char */ | |
| tmxr_putc_ln (lp, c); | |
| tmxr_poll_tx (&dcx_desc); /* poll xmt */ | |
| } | |
| else { | |
| tmxr_poll_tx (&dcx_desc); /* poll xmt */ | |
| sim_activate (uptr, dco_unit[ln].wait); /* wait */ | |
| return SCPE_OK; | |
| } | |
| } | |
| dco_csr[ln] |= CSR_DONE; /* set done */ | |
| if (dco_csr[ln] & CSR_IE) /* ie set? */ | |
| dco_set_int (ln); /* req int */ | |
| return SCPE_OK; | |
| } | |
| /* Interrupt routines */ | |
| void dci_clr_int (int32 ln) | |
| { | |
| dci_ireq &= ~(1 << ln); /* clr mux rcv int */ | |
| if (dci_ireq == 0) /* all clr? */ | |
| CLR_INT (DCI); | |
| else SET_INT (DCI); /* no, set intr */ | |
| return; | |
| } | |
| void dci_set_int (int32 ln) | |
| { | |
| dci_ireq |= (1 << ln); /* clr mux rcv int */ | |
| SET_INT (DCI); /* set master intr */ | |
| return; | |
| } | |
| int32 dci_iack (void) | |
| { | |
| int32 ln; | |
| for (ln = 0; ln < DCX_LINES; ln++) { /* find 1st line */ | |
| if (dci_ireq & (1 << ln)) { | |
| dci_clr_int (ln); /* clear intr */ | |
| return (dci_dib.vec + (ln * 010)); /* return vector */ | |
| } | |
| } | |
| return 0; | |
| } | |
| void dco_clr_int (int32 ln) | |
| { | |
| dco_ireq &= ~(1 << ln); /* clr mux rcv int */ | |
| if (dco_ireq == 0) /* all clr? */ | |
| CLR_INT (DCO); | |
| else SET_INT (DCO); /* no, set intr */ | |
| return; | |
| } | |
| void dco_set_int (int32 ln) | |
| { | |
| dco_ireq |= (1 << ln); /* clr mux rcv int */ | |
| SET_INT (DCO); /* set master intr */ | |
| return; | |
| } | |
| int32 dco_iack (void) | |
| { | |
| int32 ln; | |
| for (ln = 0; ln < DCX_LINES; ln++) { /* find 1st line */ | |
| if (dco_ireq & (1 << ln)) { | |
| dco_clr_int (ln); /* clear intr */ | |
| return (dci_dib.vec + (ln * 010) + 4); /* return vector */ | |
| } | |
| } | |
| return 0; | |
| } | |
| /* Reset */ | |
| t_stat dcx_reset (DEVICE *dptr) | |
| { | |
| int32 ln; | |
| dcx_enbdis (dptr->flags & DEV_DIS); /* sync enables */ | |
| sim_cancel (&dci_unit); /* assume stop */ | |
| if (dci_unit.flags & UNIT_ATT) /* if attached, */ | |
| sim_clock_coschedule (&dci_unit, tmxr_poll); /* activate */ | |
| for (ln = 0; ln < DCX_LINES; ln++) /* for all lines */ | |
| dcx_reset_ln (ln); | |
| return auto_config (dci_dev.name, dcx_desc.lines); /* auto config */ | |
| } | |
| /* Reset individual line */ | |
| void dcx_reset_ln (int32 ln) | |
| { | |
| dci_buf[ln] = 0; /* clear buf */ | |
| dci_csr[ln] = 0; | |
| dco_buf[ln] = 0; /* clear buf */ | |
| dco_csr[ln] = CSR_DONE; | |
| sim_cancel (&dco_unit[ln]); /* deactivate */ | |
| dci_clr_int (ln); | |
| dco_clr_int (ln); | |
| return; | |
| } | |
| /* Attach master unit */ | |
| t_stat dcx_attach (UNIT *uptr, CONST char *cptr) | |
| { | |
| t_stat r; | |
| r = tmxr_attach (&dcx_desc, uptr, cptr); /* attach */ | |
| if (r != SCPE_OK) /* error? */ | |
| return r; | |
| sim_activate (uptr, 0); /* start poll at once */ | |
| return SCPE_OK; | |
| } | |
| /* Detach master unit */ | |
| t_stat dcx_detach (UNIT *uptr) | |
| { | |
| int32 i; | |
| t_stat r; | |
| r = tmxr_detach (&dcx_desc, uptr); /* detach */ | |
| for (i = 0; i < DCX_LINES; i++) /* all lines, */ | |
| dcx_ldsc[i].rcve = 0; /* disable rcv */ | |
| sim_cancel (uptr); /* stop poll */ | |
| return r; | |
| } | |
| /* Enable/disable device */ | |
| void dcx_enbdis (int32 dis) | |
| { | |
| if (dis) { | |
| dci_dev.flags = dci_dev.flags | DEV_DIS; | |
| dco_dev.flags = dco_dev.flags | DEV_DIS; | |
| } | |
| else { | |
| dci_dev.flags = dci_dev.flags & ~DEV_DIS; | |
| dco_dev.flags = dco_dev.flags & ~DEV_DIS; | |
| } | |
| return; | |
| } | |
| /* Change number of lines */ | |
| t_stat dcx_set_lines (UNIT *uptr, int32 val, CONST char *cptr, void *desc) | |
| { | |
| int32 newln, i, t; | |
| t_stat r; | |
| if (cptr == NULL) | |
| return SCPE_ARG; | |
| newln = get_uint (cptr, 10, DCX_LINES, &r); | |
| if ((r != SCPE_OK) || (newln == dcx_desc.lines)) | |
| return r; | |
| if (newln == 0) | |
| return SCPE_ARG; | |
| if (newln < dcx_desc.lines) { | |
| for (i = newln, t = 0; i < dcx_desc.lines; i++) | |
| t = t | dcx_ldsc[i].conn; | |
| if (t && !get_yn ("This will disconnect users; proceed [N]?", FALSE)) | |
| return SCPE_OK; | |
| for (i = newln; i < dcx_desc.lines; i++) { | |
| if (dcx_ldsc[i].conn) { | |
| tmxr_linemsg (&dcx_ldsc[i], "\r\nOperator disconnected line\r\n"); | |
| tmxr_reset_ln (&dcx_ldsc[i]); /* reset line */ | |
| } | |
| dco_unit[i].flags |= UNIT_DIS; | |
| dcx_reset_ln (i); | |
| } | |
| } | |
| else { | |
| for (i = dcx_desc.lines; i < newln; i++) { | |
| dco_unit[i].flags &= ~UNIT_DIS; | |
| dcx_reset_ln (i); | |
| } | |
| } | |
| dcx_desc.lines = newln; | |
| dci_dib.lnt = newln * 010; /* upd IO page lnt */ | |
| return auto_config (dci_dev.name, newln); /* auto config */ | |
| } | |
| t_stat dcx_help (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, const char *cptr) | |
| { | |
| fprintf (st, "DC11 Additional Terminal Interfaces (DCI/DCO)\n\n"); | |
| fprintf (st, "For very early system programs, the PDP-11 simulator supports up to sixteen\n"); | |
| fprintf (st, "additional DC11 terminal interfaces. The additional terminals consist of two\n"); | |
| fprintf (st, "independent devices, DCI and DCO. The entire set is modeled as a terminal\n"); | |
| fprintf (st, "multiplexer, with DCI as the master controller. The additional terminals\n"); | |
| fprintf (st, "perform input and output through Telnet sessions connected to a user-specified\n"); | |
| fprintf (st, "port. The number of lines is specified with a SET command:\n\n"); | |
| fprintf (st, " sim> SET DCI LINES=n set number of additional lines to n [1-16]\n\n"); | |
| fprintf (st, "The ATTACH command specifies the port to be used:\n\n"); | |
| tmxr_attach_help (st, dptr, uptr, flag, cptr); | |
| fprintf (st, "The additional terminals can be set to one of four modes: UC, 7P, 7B, or 8B.\n\n"); | |
| fprintf (st, " mode input characters output characters\n\n"); | |
| fprintf (st, " UC lower case converted lower case converted to upper case,\n"); | |
| fprintf (st, " to upper case, high-order bit cleared,\n"); | |
| fprintf (st, " high-order bit cleared non-printing characters suppressed\n"); | |
| fprintf (st, " 7P high-order bit cleared high-order bit cleared,\n"); | |
| fprintf (st, " non-printing characters suppressed\n"); | |
| fprintf (st, " 7B high-order bit cleared high-order bit cleared\n"); | |
| fprintf (st, " 8B no changes no changes\n\n"); | |
| fprintf (st, "The default mode is 7P. In addition, each line can be configured to\n"); | |
| fprintf (st, "behave as though it was attached to a dataset, or hardwired to a terminal:\n\n"); | |
| fprintf (st, " sim> SET DCOn DATASET simulate attachment to a dataset (modem)\n"); | |
| fprintf (st, " sim> SET DCOn NODATASET simulate direct attachment to a terminal\n\n"); | |
| fprintf (st, "Finally, each line supports output logging. The SET DCOn LOG command enables\n"); | |
| fprintf (st, "logging on a line:\n\n"); | |
| fprintf (st, " sim> SET DCOn LOG=filename log output of line n to filename\n\n"); | |
| fprintf (st, "The SET DCOn NOLOG command disables logging and closes the open log file,\n"); | |
| fprintf (st, "if any.\n\n"); | |
| fprintf (st, "Once DCI is attached and the simulator is running, the terminals listen for\n"); | |
| fprintf (st, "connections on the specified port. They assume that the incoming connections\n"); | |
| fprintf (st, "are Telnet connections. The connections remain open until disconnected either\n"); | |
| fprintf (st, "by the Telnet client, a SET DCI DISCONNECT command, or a DETACH DCI command.\n\n"); | |
| fprintf (st, "Other special commands:\n\n"); | |
| fprintf (st, " sim> SHOW DCI CONNECTIONS show current connections\n"); | |
| fprintf (st, " sim> SHOW DCI STATISTICS show statistics for active connections\n"); | |
| fprintf (st, " sim> SET DCOn DISCONNECT disconnects the specified line.\n"); | |
| fprint_reg_help (st, &dci_dev); | |
| fprint_reg_help (st, &dco_dev); | |
| fprintf (st, "\nThe additional terminals do not support save and restore. All open connections\n"); | |
| fprintf (st, "are lost when the simulator shuts down or DCI is detached.\n"); | |
| return SCPE_OK; | |
| } | |
| const char *dcx_description (DEVICE *dptr) | |
| { | |
| return (dptr == &dci_dev) ? "DC11 asynchronous line interface - receiver" | |
| : "DC11 asynchronous line interface - transmitter"; | |
| } |