First Commit of my working state

[simh.git] / NOVA / nova_tt.c

/* nova_tt.c: NOVA console terminal simulator\r
\r
   Copyright (c) 1993-2008, Robert M. Supnik\r
\r
   Permission is hereby granted, free of charge, to any person obtaining a\r
   copy of this software and associated documentation files (the "Software"),\r
   to deal in the Software without restriction, including without limitation\r
   the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
   and/or sell copies of the Software, and to permit persons to whom the\r
   Software is furnished to do so, subject to the following conditions:\r
\r
   The above copyright notice and this permission notice shall be included in\r
   all copies or substantial portions of the Software.\r
\r
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL\r
   ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r
   IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
   CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r
\r
   Except as contained in this notice, the name of Robert M Supnik shall not be\r
   used in advertising or otherwise to promote the sale, use or other dealings\r
   in this Software without prior written authorization from Robert M Supnik.\r
\r
   tti          terminal input\r
   tto          terminal output\r
\r
   04-Jul-07    BKR     fixed Dasher CR/LF swap function in 'tti_svc()',\r
                        DEV_SET/CLR macros now used,\r
                        TTO device may now be DISABLED\r
   29-Dec-03    RMS     Added console backpressure support\r
   25-Apr-03    RMS     Revised for extended file support\r
   05-Jan-02    RMS     Fixed calling sequence for setmod\r
   03-Oct-02    RMS     Added DIBs\r
   30-May-02    RMS     Widened POS to 32b\r
   30-Nov-01    RMS     Added extended SET/SHOW support\r
   17-Sep-01    RMS     Removed multiconsole support\r
   07-Sep-01    RMS     Moved function prototypes\r
   31-May-01    RMS     Added multiconsole support\r
\r
   Notes:\r
    - TTO output is always masked to 7 bits in this rev\r
    - TTO "Dasher" attribute sends '\b' to console instead of '\031'\r
    - TTO may be disabled\r
    - TTI input is always masked to 7 bits in this rev\r
    - TTI "Dasher" attribute swaps <CR> and <LF>\r
    - TTI may not be disabled\r
*/\r
\r
#include "nova_defs.h"\r
\r
#define UNIT_V_DASHER   (UNIT_V_UF + 0)                 /* Dasher mode */\r
#define UNIT_DASHER     (1 << UNIT_V_DASHER)\r
\r
extern int32 int_req, dev_busy, dev_done, dev_disable;\r
\r
int32 tti (int32 pulse, int32 code, int32 AC);\r
int32 tto (int32 pulse, int32 code, int32 AC);\r
t_stat tti_svc (UNIT *uptr);\r
t_stat tto_svc (UNIT *uptr);\r
t_stat tti_reset (DEVICE *dptr);\r
t_stat tto_reset (DEVICE *dptr);\r
t_stat ttx_setmod (UNIT *uptr, int32 val, char *cptr, void *desc);\r
\r
/* TTI data structures\r
\r
   tti_dev      TTI device descriptor\r
   tti_unit     TTI unit descriptor\r
   tti_reg      TTI register list\r
   ttx_mod      TTI/TTO modifiers list\r
*/\r
\r
DIB tti_dib = { DEV_TTI, INT_TTI, PI_TTI, &tti };\r
\r
UNIT tti_unit = { UDATA (&tti_svc, 0, 0), KBD_POLL_WAIT };\r
\r
REG tti_reg[] = {\r
    { ORDATA (BUF, tti_unit.buf, 8) },\r
    { FLDATA (BUSY, dev_busy, INT_V_TTI) },\r
    { FLDATA (DONE, dev_done, INT_V_TTI) },\r
    { FLDATA (DISABLE, dev_disable, INT_V_TTI) },\r
    { FLDATA (INT, int_req, INT_V_TTI) },\r
    { DRDATA (POS, tti_unit.pos, T_ADDR_W), PV_LEFT },\r
    { DRDATA (TIME, tti_unit.wait, 24), REG_NZ + PV_LEFT },\r
    { NULL }\r
    };\r
\r
MTAB ttx_mod[] = {\r
    { UNIT_DASHER, 0, "ANSI", "ANSI", &ttx_setmod },\r
    { UNIT_DASHER, UNIT_DASHER, "Dasher", "DASHER", &ttx_setmod },\r
    { 0 }\r
    } ;\r
\r
DEVICE tti_dev = {\r
    "TTI", &tti_unit, tti_reg, ttx_mod,\r
    1, 10, 31, 1, 8, 8,\r
    NULL, NULL, &tti_reset,\r
    NULL, NULL, NULL,\r
    &tti_dib, 0\r
    };\r
\r
/* TTO data structures\r
\r
   tto_dev      TTO device descriptor\r
   tto_unit     TTO unit descriptor\r
   tto_reg      TTO register list\r
*/\r
\r
DIB tto_dib = { DEV_TTO, INT_TTO, PI_TTO, &tto };\r
\r
UNIT tto_unit = { UDATA (&tto_svc, 0, 0), SERIAL_OUT_WAIT };\r
\r
REG tto_reg[] = {\r
    { ORDATA (BUF, tto_unit.buf, 8) },\r
    { FLDATA (BUSY, dev_busy, INT_V_TTO) },\r
    { FLDATA (DONE, dev_done, INT_V_TTO) },\r
    { FLDATA (DISABLE, dev_disable, INT_V_TTO) },\r
    { FLDATA (INT, int_req, INT_V_TTO) },\r
    { DRDATA (POS, tto_unit.pos, T_ADDR_W), PV_LEFT },\r
    { DRDATA (TIME, tto_unit.wait, 24), PV_LEFT },\r
    { NULL }\r
    };\r
\r
DEVICE tto_dev = {\r
    "TTO", &tto_unit, tto_reg, ttx_mod,\r
    1, 10, 31, 1, 8, 8,\r
    NULL, NULL, &tto_reset,\r
    NULL, NULL, NULL,\r
    &tto_dib, DEV_DISABLE\r
    };\r
\r
/* Terminal input: IOT routine */\r
\r
int32 tti (int32 pulse, int32 code, int32 AC)\r
{\r
int32 iodata;\r
\r
\r
if (code == ioDIA)\r
    iodata = tti_unit.buf & 0377;\r
else iodata = 0;\r
\r
switch (pulse)\r
    {                                                   /* decode IR<8:9> */\r
  case iopS:                                            /* start */\r
    DEV_SET_BUSY( INT_TTI ) ;\r
    DEV_CLR_DONE( INT_TTI ) ;\r
    DEV_UPDATE_INTR ;\r
    break;\r
\r
  case iopC:                                            /* clear */\r
    DEV_CLR_BUSY( INT_TTI ) ;\r
    DEV_CLR_DONE( INT_TTI ) ;\r
    DEV_UPDATE_INTR ;\r
    break;\r
    }                                                   /* end switch */\r
\r
return iodata;\r
}\r
\r
/* Unit service */\r
\r
t_stat tti_svc (UNIT *uptr)\r
{\r
int32 temp;\r
\r
sim_activate (&tti_unit, tti_unit.wait);                /* continue poll */\r
if ((temp = sim_poll_kbd ()) < SCPE_KFLAG)\r
    return temp;                                        /* no char or error? */\r
tti_unit.buf = temp & 0177;\r
if (tti_unit.flags & UNIT_DASHER) {\r
    if (tti_unit.buf == '\r')\r
        tti_unit.buf = '\n';                            /* Dasher: cr -> nl */\r
    else if (tti_unit.buf == '\n')\r
        tti_unit.buf = '\r' ;                           /* Dasher: nl -> cr */\r
    }\r
DEV_CLR_BUSY( INT_TTI ) ;\r
DEV_SET_DONE( INT_TTI ) ;\r
DEV_UPDATE_INTR ;\r
++(uptr->pos) ;\r
return SCPE_OK;\r
}\r
\r
/* Reset routine */\r
\r
t_stat tti_reset (DEVICE *dptr)\r
{\r
tti_unit.buf = 0;                                       /* <not DG compatible>  */\r
DEV_CLR_BUSY( INT_TTI ) ;\r
DEV_CLR_DONE( INT_TTI ) ;\r
DEV_UPDATE_INTR ;\r
sim_activate (&tti_unit, tti_unit.wait);                /* activate unit */\r
return SCPE_OK;\r
}\r
\r
/* Terminal output: IOT routine */\r
\r
int32 tto (int32 pulse, int32 code, int32 AC)\r
{\r
if (code == ioDOA)\r
    tto_unit.buf = AC & 0377; \r
\r
switch (pulse)\r
    {                                                   /* decode IR<8:9> */\r
  case iopS:                                            /* start */\r
    DEV_SET_BUSY( INT_TTO ) ;\r
    DEV_CLR_DONE( INT_TTO ) ;\r
    DEV_UPDATE_INTR ;\r
    sim_activate (&tto_unit, tto_unit.wait);            /* activate unit */\r
    break;\r
\r
  case iopC:                                            /* clear */\r
    DEV_CLR_BUSY( INT_TTO ) ;\r
    DEV_CLR_DONE( INT_TTO ) ;\r
    DEV_UPDATE_INTR ;\r
    sim_cancel (&tto_unit);                             /* deactivate unit */\r
    break;\r
    }                                                   /* end switch */\r
return 0;\r
}\r
\r
\r
/* Unit service */\r
\r
t_stat tto_svc (UNIT *uptr)\r
{\r
int32   c;\r
t_stat  r;\r
\r
c = tto_unit.buf & 0177;\r
if ((tto_unit.flags & UNIT_DASHER) && (c == 031))\r
    c = '\b';\r
if ((r = sim_putchar_s (c)) != SCPE_OK) {               /* output; error? */\r
    sim_activate (uptr, uptr->wait);                    /* try again */\r
    return ((r == SCPE_STALL)? SCPE_OK : r);            /* !stall? report */\r
    }\r
DEV_CLR_BUSY( INT_TTO ) ;\r
DEV_SET_DONE( INT_TTO ) ;\r
DEV_UPDATE_INTR ;\r
++(tto_unit.pos);\r
return SCPE_OK;\r
}\r
\r
/* Reset routine */\r
\r
t_stat tto_reset (DEVICE *dptr)\r
{\r
tto_unit.buf = 0;                                       /* <not DG compatible!>  */\r
DEV_CLR_BUSY( INT_TTO ) ;\r
DEV_CLR_DONE( INT_TTO ) ;\r
DEV_UPDATE_INTR ;\r
sim_cancel (&tto_unit);                                 /* deactivate unit */\r
return SCPE_OK;\r
}\r
\r
t_stat ttx_setmod (UNIT *uptr, int32 val, char *cptr, void *desc)\r
{\r
tti_unit.flags = (tti_unit.flags & ~UNIT_DASHER) | val;\r
tto_unit.flags = (tto_unit.flags & ~UNIT_DASHER) | val;\r
return SCPE_OK;\r
}\r