235 lines
7.1 KiB
C
235 lines
7.1 KiB
C
/* pdp18b_tt1.c: 18b PDP's second Teletype
|
||
|
||
Copyright (c) 1993-2001, 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.
|
||
|
||
tti1 keyboard
|
||
tto1 teleprinter
|
||
|
||
19-Sep-01 RMS Fixed typo
|
||
17-Sep-01 RMS Changed to use terminal multiplexor library
|
||
07-Sep-01 RMS Moved function prototypes
|
||
10-Jun-01 RMS Cleaned up IOT decoding to reflect hardware
|
||
*/
|
||
|
||
#include "pdp18b_defs.h"
|
||
#include "sim_sock.h"
|
||
#include "sim_tmxr.h"
|
||
#include <ctype.h>
|
||
|
||
#define UNIT_V_UC (UNIT_V_UF + 0) /* UC only */
|
||
#define UNIT_UC (1 << UNIT_V_UC)
|
||
|
||
extern int32 int_req, saved_PC;
|
||
extern int32 tmxr_poll; /* calibrated poll */
|
||
TMLN tt1_ldsc = { 0 }; /* line descriptors */
|
||
TMXR tt_desc = { 1, 0, &tt1_ldsc }; /* mux descriptor */
|
||
|
||
t_stat tti1_svc (UNIT *uptr);
|
||
t_stat tto1_svc (UNIT *uptr);
|
||
t_stat tti1_reset (DEVICE *dptr);
|
||
t_stat tto1_reset (DEVICE *dptr);
|
||
t_stat tti1_attach (UNIT *uptr, char *cptr);
|
||
t_stat tti1_detach (UNIT *uptr);
|
||
t_stat tti1_status (UNIT *uptr, FILE *st);
|
||
|
||
/* TTI1 data structures
|
||
|
||
tti1_dev TTI1 device descriptor
|
||
tti1_unit TTI1 unit
|
||
tto1_mod TTI1 modifier list
|
||
tti1_reg TTI1 register list
|
||
*/
|
||
|
||
UNIT tti1_unit = { UDATA (&tti1_svc, UNIT_ATTABLE+UNIT_UC, 0), KBD_POLL_WAIT };
|
||
|
||
REG tti1_reg[] = {
|
||
{ ORDATA (BUF, tti1_unit.buf, 8) },
|
||
{ FLDATA (INT, int_req, INT_V_TTI1) },
|
||
{ FLDATA (DONE, int_req, INT_V_TTI1) },
|
||
{ FLDATA (UC, tti1_unit.flags, UNIT_V_UC), REG_HRO },
|
||
{ DRDATA (POS, tt1_ldsc.rxcnt, 31), PV_LEFT },
|
||
{ DRDATA (TIME, tti1_unit.wait, 24), REG_NZ + PV_LEFT },
|
||
{ NULL } };
|
||
|
||
MTAB ttx1_mod[] = {
|
||
{ UNIT_ATT, UNIT_ATT, "line status:", NULL, &tti1_status },
|
||
{ UNIT_UC, 0, "lower case", "LC", NULL },
|
||
{ UNIT_UC, UNIT_UC, "upper case", "UC", NULL },
|
||
{ 0 } };
|
||
|
||
DEVICE tti1_dev = {
|
||
"TTI1", &tti1_unit, tti1_reg, ttx1_mod,
|
||
1, 10, 31, 1, 8, 8,
|
||
&tmxr_ex, &tmxr_dep, &tti1_reset,
|
||
NULL, &tti1_attach, &tti1_detach };
|
||
|
||
/* TTO1 data structures
|
||
|
||
tto1_dev TTO1 device descriptor
|
||
tto1_unit TTO1 unit
|
||
tto1_mod TTO1 modifier list
|
||
tto1_reg TTO1 register list
|
||
*/
|
||
|
||
UNIT tto1_unit = { UDATA (&tto1_svc, UNIT_UC, 0), SERIAL_OUT_WAIT };
|
||
|
||
REG tto1_reg[] = {
|
||
{ ORDATA (BUF, tto1_unit.buf, 8) },
|
||
{ FLDATA (INT, int_req, INT_V_TTO1) },
|
||
{ FLDATA (DONE, int_req, INT_V_TTO1) },
|
||
{ DRDATA (POS, tt1_ldsc.txcnt, 31), PV_LEFT },
|
||
{ DRDATA (TIME, tto1_unit.wait, 24), PV_LEFT },
|
||
{ NULL } };
|
||
|
||
DEVICE tto1_dev = {
|
||
"TTO1", &tto1_unit, tto1_reg, ttx1_mod,
|
||
1, 10, 31, 1, 8, 8,
|
||
NULL, NULL, &tto1_reset,
|
||
NULL, NULL, NULL };
|
||
|
||
/* Terminal input: IOT routine */
|
||
|
||
int32 tti1 (int32 pulse, int32 AC)
|
||
{
|
||
if (pulse & 001) { /* KSF1 */
|
||
if (int_req & INT_TTI1) AC = AC | IOT_SKP; }
|
||
if (pulse & 002) { /* KRB1 */
|
||
int_req = int_req & ~INT_TTI1; /* clear flag */
|
||
AC= AC | tti1_unit.buf; } /* return buffer */
|
||
return AC;
|
||
}
|
||
|
||
/* Unit service */
|
||
|
||
t_stat tti1_svc (UNIT *uptr)
|
||
{
|
||
int32 temp, newln;
|
||
|
||
if (tt1_ldsc.conn) { /* connected? */
|
||
tmxr_poll_rx (&tt_desc); /* poll for input */
|
||
if (temp = tmxr_getc_ln (&tt1_ldsc)) { /* get char */
|
||
temp = temp & 0177;
|
||
if ((uptr -> flags & UNIT_UC) &&
|
||
islower (temp)) temp = toupper (temp);
|
||
uptr -> buf = temp | 0200; /* got char */
|
||
int_req = int_req | INT_TTI1; } /* set flag */
|
||
sim_activate (uptr, uptr -> wait); } /* continue poll */
|
||
if (uptr -> flags & UNIT_ATT) { /* attached? */
|
||
newln = tmxr_poll_conn (&tt_desc, uptr); /* poll connect */
|
||
if (newln >= 0) { /* got one? */
|
||
sim_activate (&tti1_unit, tti1_unit.wait);
|
||
tt1_ldsc.rcve = 1; } /* rcv enabled */
|
||
sim_activate (uptr, tmxr_poll); } /* sched poll */
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Reset routine */
|
||
|
||
t_stat tti1_reset (DEVICE *dptr)
|
||
{
|
||
tti1_unit.buf = 0; /* clear buffer */
|
||
int_req = int_req & ~INT_TTI1; /* clear flag */
|
||
if (tt1_ldsc.conn) { /* if conn, */
|
||
sim_activate (&tti1_unit, tti1_unit.wait); /* activate, */
|
||
tt1_ldsc.rcve = 1; } /* enable */
|
||
else if (tti1_unit.flags & UNIT_ATT) /* if attached, */
|
||
sim_activate (&tti1_unit, tmxr_poll); /* activate */
|
||
else sim_cancel (&tti1_unit); /* else stop */
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Terminal output: IOT routine */
|
||
|
||
int32 tto1 (int32 pulse, int32 AC)
|
||
{
|
||
if (pulse & 001) { /* TSF */
|
||
if (int_req & INT_TTO1) AC = AC | IOT_SKP; }
|
||
if (pulse & 002) int_req = int_req & ~INT_TTO1; /* clear flag */
|
||
if (pulse & 004) { /* load buffer */
|
||
sim_activate (&tto1_unit, tto1_unit.wait); /* activate unit */
|
||
tto1_unit.buf = AC & 0377; } /* load buffer */
|
||
return AC;
|
||
}
|
||
|
||
/* Unit service */
|
||
|
||
t_stat tto1_svc (UNIT *uptr)
|
||
{
|
||
int32 out;
|
||
|
||
int_req = int_req | INT_TTO1; /* set flag */
|
||
out = tto1_unit.buf & 0177;
|
||
if (tt1_ldsc.conn) { /* connected? */
|
||
if (tt1_ldsc.xmte) { /* tx enabled? */
|
||
if (!(tto1_unit.flags & UNIT_UC) ||
|
||
((out >= 007) && (out <= 0137)))
|
||
tmxr_putc_ln (&tt1_ldsc, out); /* output char */
|
||
tmxr_poll_tx (&tt_desc); } /* poll xmt */
|
||
else { tmxr_poll_tx (&tt_desc); /* poll xmt */
|
||
sim_activate (&tto1_unit, tmxr_poll); /* wait */
|
||
return SCPE_OK; } }
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Reset routine */
|
||
|
||
t_stat tto1_reset (DEVICE *dptr)
|
||
{
|
||
tto1_unit.buf = 0; /* clear buffer */
|
||
int_req = int_req & ~INT_TTO1; /* clear flag */
|
||
sim_cancel (&tto1_unit); /* deactivate unit */
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Attach routine */
|
||
|
||
t_stat tti1_attach (UNIT *uptr, char *cptr)
|
||
{
|
||
t_stat r;
|
||
|
||
r = tmxr_attach (&tt_desc, uptr, cptr); /* attach */
|
||
if (r != SCPE_OK) return r; /* error */
|
||
sim_activate (uptr, tmxr_poll); /* start poll */
|
||
return SCPE_OK;
|
||
}
|
||
|
||
/* Detach routine */
|
||
|
||
t_stat tti1_detach (UNIT *uptr)
|
||
{
|
||
t_stat r;
|
||
|
||
r = tmxr_detach (&tt_desc, uptr); /* detach */
|
||
tt1_ldsc.rcve = 0; /* disable rcv */
|
||
sim_cancel (uptr); /* stop poll */
|
||
return r;
|
||
}
|
||
|
||
/* Status routine */
|
||
|
||
t_stat tti1_status (UNIT *uptr, FILE *st)
|
||
{
|
||
tmxr_fstatus (st, &tt1_ldsc, -1);
|
||
return SCPE_OK;
|
||
}
|