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/* pdp1_dcs.c: PDP-1D terminal multiplexor simulator
Copyright (c) 2006-2013, Robert M Supnik
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copy of this software and associated documentation files (the "Software"),
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Software is furnished to do so, subject to the following conditions:
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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Except as contained in this notice, the name of Robert M Supnik shall not be
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dcs Type 630 data communications subsystem
11-Oct-2013 RMS Poll DCS immediately after attach to pick up connect
19-Nov-2008 RMS Revised for common TMXR show routines
This module implements up to 32 individual serial interfaces.
*/
#include "pdp1_defs.h"
#include "sim_sock.h"
#include "sim_tmxr.h"
#define DCS_LINES 32 /* lines */
#define DCS_LINE_MASK (DCS_LINES - 1)
#define DCSL_WAIT 1000 /* output wait */
#define DCS_NUMLIN dcs_desc.lines
int32 dcs_sbs = 0; /* SBS level */
uint32 dcs_send = 0; /* line for send */
uint32 dcs_scan = 0; /* line for scanner */
uint8 dcs_flg[DCS_LINES]; /* line flags */
uint8 dcs_buf[DCS_LINES]; /* line bufffers */
extern int32 iosta, stop_inst;
extern int32 tmxr_poll;
TMLN dcs_ldsc[DCS_LINES] = { {0} }; /* line descriptors */
TMXR dcs_desc = { DCS_LINES, 0, 0, dcs_ldsc }; /* mux descriptor */
t_stat dcsi_svc (UNIT *uptr);
t_stat dcso_svc (UNIT *uptr);
t_stat dcs_reset (DEVICE *dptr);
t_stat dcs_attach (UNIT *uptr, char *cptr);
t_stat dcs_detach (UNIT *uptr);
t_stat dcs_vlines (UNIT *uptr, int32 val, char *cptr, void *desc);
void dcs_reset_ln (int32 ln);
void dcs_scan_next (t_bool unlk);
/* DCS data structures
dcs_dev DCS device descriptor
dcs_unit DCS unit descriptor
dcs_reg DCS register list
dcs_mod DCS modifiers list
*/
UNIT dcs_unit = { UDATA (&dcsi_svc, UNIT_ATTABLE, 0) };
REG dcs_reg[] = {
{ BRDATA (BUF, dcs_buf, 8, 8, DCS_LINES) },
{ BRDATA (FLAGS, dcs_flg, 8, 1, DCS_LINES) },
{ FLDATA (SCNF, iosta, IOS_V_DCS) },
{ ORDATA (SCAN, dcs_scan, 5) },
{ ORDATA (SEND, dcs_send, 5) },
{ DRDATA (SBSLVL, dcs_sbs, 4), REG_HRO },
{ NULL }
};
MTAB dcs_mod[] = {
{ MTAB_XTD|MTAB_VDV, 0, "SBSLVL", "SBSLVL",
&dev_set_sbs, &dev_show_sbs, (void *) &dcs_sbs },
{ MTAB_XTD | MTAB_VDV, 0, "LINES", "LINES",
&dcs_vlines, &tmxr_show_lines, (void *) &dcs_desc },
{ MTAB_XTD | MTAB_VDV, 1, NULL, "DISCONNECT",
&tmxr_dscln, NULL, (void *) &dcs_desc },
{ UNIT_ATT, UNIT_ATT, "summary", NULL,
NULL, &tmxr_show_summ, (void *) &dcs_desc },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, 1, "CONNECTIONS", NULL,
NULL, &tmxr_show_cstat, (void *) &dcs_desc },
{ MTAB_XTD | MTAB_VDV | MTAB_NMO, 0, "STATISTICS", NULL,
NULL, &tmxr_show_cstat, (void *) &dcs_desc },
{ 0 }
};
DEVICE dcs_dev = {
"DCS", &dcs_unit, dcs_reg, dcs_mod,
1, 10, 31, 1, 8, 8,
&tmxr_ex, &tmxr_dep, &dcs_reset,
NULL, &dcs_attach, &dcs_detach,
NULL, DEV_MUX | DEV_DISABLE | DEV_DIS
};
/* DCSL data structures
dcsl_dev DCSL device descriptor
dcsl_unit DCSL unit descriptor
dcsl_reg DCSL register list
dcsl_mod DCSL modifiers list
*/
UNIT dcsl_unit[] = {
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT },
{ UDATA (&dcso_svc, TT_MODE_UC, 0), DCSL_WAIT }
};
MTAB dcsl_mod[] = {
{ TT_MODE, TT_MODE_UC, "UC", "UC", NULL },
{ TT_MODE, TT_MODE_7B, "7b", "7B", NULL },
{ TT_MODE, TT_MODE_8B, "8b", "8B", NULL },
{ TT_MODE, TT_MODE_7P, "7p", "7P", NULL },
{ MTAB_XTD|MTAB_VUN, 0, NULL, "DISCONNECT",
&tmxr_dscln, NULL, &dcs_desc },
{ MTAB_XTD|MTAB_VUN|MTAB_NC, 0, "LOG", "LOG",
&tmxr_set_log, &tmxr_show_log, &dcs_desc },
{ MTAB_XTD|MTAB_VUN|MTAB_NC, 0, NULL, "NOLOG",
&tmxr_set_nolog, NULL, &dcs_desc },
{ 0 }
};
REG dcsl_reg[] = {
{ URDATA (TIME, dcsl_unit[0].wait, 10, 24, 0,
DCS_LINES, REG_NZ + PV_LEFT) },
{ NULL }
};
DEVICE dcsl_dev = {
"DCSL", dcsl_unit, dcsl_reg, dcsl_mod,
DCS_LINES, 10, 31, 1, 8, 8,
NULL, NULL, &dcs_reset,
NULL, NULL, NULL,
NULL, DEV_DIS | DEV_MUX
};
/* DCS IOT routine */
int32 dcs (int32 inst, int32 dev, int32 dat)
{
int32 pls = (inst >> 6) & 077;
if (dcs_dev.flags & DEV_DIS) /* disabled? */
return (stop_inst << IOT_V_REASON) | dat; /* illegal inst */
if (pls & 020) /* pulse 20? clr IO */
dat = 0;
switch (pls & 057) { /* case IR<6,8:11> */
case 000: /* RCH */
dat |= dcs_buf[dcs_scan]; /* return line buf */
dcs_flg[dcs_scan] = 0; /* clr line flag */
break;
case 001: /* RRC */
dat |= dcs_scan; /* return line num */
break;
case 010: /* RCC */
dat |= dcs_buf[dcs_scan]; /* return line buf */
dcs_flg[dcs_scan] = 0; /* clr line flag */
/* fall through */
case 011: /* RSC */
dcs_scan_next (TRUE); /* unlock scanner */
break;
case 040: /* TCB */
dcs_buf[dcs_send] = dat & 0377; /* load buffer */
dcs_flg[dcs_send] = 0; /* clr line flag */
sim_activate (&dcsl_unit[dcs_send], dcsl_unit[dcs_send].wait);
break;
case 041: /* SSB */
dcs_send = dat & DCS_LINE_MASK; /* load line num */
break;
case 050: /* TCC */
dcs_buf[dcs_scan] = dat & 0377; /* load buffer */
dcs_flg[dcs_scan] = 0; /* clr line flag */
sim_activate (&dcsl_unit[dcs_scan], dcsl_unit[dcs_scan].wait);
dcs_scan_next (TRUE); /* unlock scanner */
break;
default:
return (stop_inst << IOT_V_REASON) | dat; /* illegal inst */
} /* end case */
return dat;
}
/* Unit service - receive side
Poll all active lines for input
Poll for new connections
*/
t_stat dcsi_svc (UNIT *uptr)
{
int32 ln, c, out;
if ((uptr->flags & UNIT_ATT) == 0) /* attached? */
return SCPE_OK;
if (dcs_dev.flags & DEV_DIS)
return SCPE_OK;
sim_activate (uptr, tmxr_poll); /* continue poll */
ln = tmxr_poll_conn (&dcs_desc); /* look for connect */
if (ln >= 0) { /* got one? */
dcs_ldsc[ln].rcve = 1; /* set rcv enable */
}
tmxr_poll_rx (&dcs_desc); /* poll for input */
for (ln = 0; ln < DCS_NUMLIN; ln++) { /* loop thru lines */
if (dcs_ldsc[ln].conn) { /* connected? */
if ((c = tmxr_getc_ln (&dcs_ldsc[ln]))) { /* get char */
if (c & SCPE_BREAK) /* break? */
c = 0;
else c = sim_tt_inpcvt (c, TT_GET_MODE (dcsl_unit[ln].flags)|TTUF_KSR);
dcs_buf[ln] = c; /* save char */
dcs_flg[ln] = 1; /* set line flag */
dcs_scan_next (FALSE); /* kick scanner */
out = sim_tt_outcvt (c & 0177, TT_GET_MODE (dcsl_unit[ln].flags));
if (out >= 0) {
tmxr_putc_ln (&dcs_ldsc[ln], out); /* echo char */
tmxr_poll_tx (&dcs_desc); /* poll xmt */
}
}
}
else dcs_ldsc[ln].rcve = 0; /* disconnected */
} /* end for */
return SCPE_OK;
}
/* Unit service - transmit side */
t_stat dcso_svc (UNIT *uptr)
{
int32 c;
uint32 ln = uptr - dcsl_unit; /* line # */
if (dcs_dev.flags & DEV_DIS)
return SCPE_OK;
if (dcs_ldsc[ln].conn) { /* connected? */
if (dcs_ldsc[ln].xmte) { /* xmt enabled? */
c = sim_tt_outcvt (dcs_buf[ln] & 0177, TT_GET_MODE (uptr->flags));
if (c >= 0) /* output char */
tmxr_putc_ln (&dcs_ldsc[ln], c);
tmxr_poll_tx (&dcs_desc); /* poll xmt */
}
else { /* buf full */
tmxr_poll_tx (&dcs_desc); /* poll xmt */
sim_activate (uptr, uptr->wait); /* reschedule */
return SCPE_OK;
}
}
dcs_flg[ln] = 1; /* set line flag */
dcs_scan_next (FALSE); /* kick scanner */
return SCPE_OK;
}
/* Kick scanner */
void dcs_scan_next (t_bool unlk)
{
int32 i;
if (unlk) /* unlock? */
iosta &= ~IOS_DCS;
else if (iosta & IOS_DCS) /* no, locked? */
return;
for (i = 0; i < DCS_LINES; i++) { /* scan flags */
dcs_scan = (dcs_scan + 1) & DCS_LINE_MASK; /* next flag */
if (dcs_flg[dcs_scan] != 0) { /* flag set? */
iosta |= IOS_DCS; /* lock scanner */
dev_req_int (dcs_sbs); /* request intr */
return;
}
}
return;
}
/* Reset routine */
t_stat dcs_reset (DEVICE *dptr)
{
int32 i;
if (dcs_dev.flags & DEV_DIS) /* master disabled? */
dcsl_dev.flags = dcsl_dev.flags | DEV_DIS; /* disable lines */
else dcsl_dev.flags = dcsl_dev.flags & ~DEV_DIS;
if (dcs_unit.flags & UNIT_ATT) /* master att? */
sim_activate_abs (&dcs_unit, tmxr_poll); /* activate */
else sim_cancel (&dcs_unit); /* else stop */
for (i = 0; i < DCS_LINES; i++) /* reset lines */
dcs_reset_ln (i);
dcs_send = 0;
dcs_scan = 0;
iosta &= ~IOS_DCS; /* clr intr req */
return SCPE_OK;
}
/* Attach master unit */
t_stat dcs_attach (UNIT *uptr, char *cptr)
{
t_stat r;
r = tmxr_attach (&dcs_desc, uptr, cptr); /* attach */
if (r != SCPE_OK) /* error */
return r;
sim_activate_abs (uptr, 0); /* start poll at once */
return SCPE_OK;
}
/* Detach master unit */
t_stat dcs_detach (UNIT *uptr)
{
int32 i;
t_stat r;
r = tmxr_detach (&dcs_desc, uptr); /* detach */
for (i = 0; i < DCS_LINES; i++) /* disable rcv */
dcs_ldsc[i].rcve = 0;
sim_cancel (uptr); /* stop poll */
return r;
}
/* Change number of lines */
t_stat dcs_vlines (UNIT *uptr, int32 val, char *cptr, void *desc)
{
int32 newln, i, t;
t_stat r;
if (cptr == NULL)
return SCPE_ARG;
newln = get_uint (cptr, 10, DCS_LINES, &r);
if ((r != SCPE_OK) || (newln == DCS_NUMLIN))
return r;
if (newln == 0)
return SCPE_ARG;
if (newln < DCS_LINES) {
for (i = newln, t = 0; i < DCS_NUMLIN; i++)
t = t | dcs_ldsc[i].conn;
if (t && !get_yn ("This will disconnect users; proceed [N]?", FALSE))
return SCPE_OK;
for (i = newln; i < DCS_NUMLIN; i++) {
if (dcs_ldsc[i].conn) {
tmxr_linemsg (&dcs_ldsc[i], "\r\nOperator disconnected line\r\n");
tmxr_reset_ln (&dcs_ldsc[i]); /* reset line */
}
dcsl_unit[i].flags = dcsl_unit[i].flags | UNIT_DIS;
dcs_reset_ln (i);
}
}
else {
for (i = DCS_NUMLIN; i < newln; i++) {
dcsl_unit[i].flags = dcsl_unit[i].flags & ~UNIT_DIS;
dcs_reset_ln (i);
}
}
DCS_NUMLIN = newln;
return SCPE_OK;
}
/* Reset an individual line */
void dcs_reset_ln (int32 ln)
{
sim_cancel (&dcsl_unit[ln]);
dcs_buf[ln] = 0;
dcs_flg[ln] = 0;
return;
}