/* ka10_imx.c: Input multplexor for A/D.
Copyright (c) 2018,2020, Lars Brinkhoff
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 is a device which has 128 A/D channels. It's specific to the MIT
AI lab PDP-10.
*/
#include <time.h>
#include "kx10_defs.h"
#include "sim_video.h"
#ifndef NUM_DEVS_IMX
#define NUM_DEVS_IMX 0
#endif
#if (NUM_DEVS_IMX > 0)
#define IMX_DEVNUM 0574
#define IMX_PIA 0000007
#define IMX_DONE 0000010
#define IMX_PACK 0000040
#define IMX_SEQUENCE 0000100
#define IMX_TEST 0000200
#define IMX_RATE 0377000
#define IMX_ASSIGNED 0400000000000LL
#define IMX_CONO (IMX_PIA | IMX_PACK | IMX_SEQUENCE | IMX_RATE)
#define IMX_CONI (IMX_PIA | IMX_DONE | IMX_PACK | IMX_SEQUENCE | IMX_TEST | IMX_ASSIGNED)
#define IMX_CHANNEL 0000177
#define JOY_MAX_UNITS 4
#define JOY_MAX_AXES 4
#define JOY_NO_CHAN (IMX_CHANNEL + 1)
t_stat imx_devio(uint32 dev, uint64 *data);
t_stat imx_svc (UNIT *uptr);
t_stat imx_reset (DEVICE *dptr);
const char *imx_description (DEVICE *dptr);
#if MPX_DEV
t_stat imx_set_mpx (UNIT *uptr, int32 val, CONST char *cptr, void *desc) ;
t_stat imx_show_mpx (FILE *st, UNIT *uptr, int32 val, CONST void *desc);
#endif
t_stat imx_show_channel (FILE* st, UNIT* uptr, int32 val, CONST void* desc);
t_stat imx_set_channel (UNIT* uptr, int32 val, CONST char* cptr, void* desc);
static uint64 status = IMX_ASSIGNED;
static uint64 imx_data;
static uint64 imx_samples;
static int initial_channel = 0;
static int current_channel = 0;
static int imx_mpx_lvl;
static int imx_inputs[0200];
static int imx_map[JOY_MAX_UNITS][JOY_MAX_AXES];
UNIT imx_unit[] = {
{ UDATA (&imx_svc, UNIT_IDLE, 0) }
};
DIB imx_dib = {IMX_DEVNUM, 1, &imx_devio, NULL};
MTAB imx_mod[] = {
#if MPX_DEV
{MTAB_XTD|MTAB_VDV|MTAB_VALR, 0, "MPX", "MPX",
&imx_set_mpx, &imx_show_mpx, NULL},
#endif
{MTAB_XTD|MTAB_VDV|MTAB_VALR, 0, "CHANNEL", "CHANNEL",
&imx_set_channel, &imx_show_channel, NULL},
{ 0 }
};
DEVICE imx_dev = {
"IMX", imx_unit, NULL, imx_mod,
1, 8, 0, 1, 8, 36,
NULL, NULL, imx_reset, NULL, NULL, NULL,
&imx_dib, DEV_DISABLE | DEV_DIS | DEV_DEBUG, 0, NULL,
NULL, NULL, NULL, NULL, NULL, &imx_description
};
static void imx_joy_motion(int which, int axis, int value)
{
int chan;
if (which < JOY_MAX_UNITS && axis < JOY_MAX_AXES) {
chan = imx_map[which][axis];
if (chan == JOY_NO_CHAN)
return;
value += 32768;
if (chan < 0) {
chan = -chan;
value = 65535 - value;
}
imx_inputs[chan] = value >> 5;
sim_debug(DEBUG_DETAIL, &imx_dev, "Channel %d value %o\n",
chan, imx_inputs[chan]);
}
}
static int imx_sample (void)
{
int sample = imx_inputs[current_channel];
if (status & IMX_SEQUENCE)
current_channel = (current_channel + 1) & IMX_CHANNEL;
else
current_channel = initial_channel;
return sample;
}
static void imx_activate (void)
{
int micros;
if (status & IMX_DONE) {
sim_cancel (imx_unit);
sim_debug(DEBUG_IRQ, &imx_dev, "Cancel\n");
return;
}
micros = (status >> 16) & 0377;
if (micros < 10)
micros = 10;
sim_activate_after (imx_unit, micros);
sim_debug(DEBUG_IRQ, &imx_dev, "Activate\n");
}
t_stat imx_reset (DEVICE *dptr)
{
static int init = 1;
int i, j;
if (dptr->flags & DEV_DIS) {
imx_samples = 0;
imx_data = 0;
for (i = 0; i <= IMX_CHANNEL; i++)
imx_inputs[i] = 1000;
for (i = 0; i < JOY_MAX_UNITS; i++) {
for (j = 0; j < JOY_MAX_UNITS; j++)
imx_map[i][j] = JOY_NO_CHAN;
}
} else {
if (init) {
vid_register_gamepad_motion_callback (imx_joy_motion);
init = 0;
}
}
return SCPE_OK;
}
t_stat imx_devio(uint32 dev, uint64 *data)
{
DEVICE *dptr = &imx_dev;
switch(dev & 07) {
case CONO|4:
sim_debug(DEBUG_CONO, &imx_dev, "%06llo\n", *data);
status &= ~(IMX_CONO|IMX_DONE);
status |= *data & IMX_CONO;
imx_data = 0;
imx_samples = 0;
current_channel = initial_channel;
clr_interrupt (IMX_DEVNUM);
imx_activate ();
break;
case CONI|4:
*data = status & IMX_CONI;
sim_debug(DEBUG_CONI, &imx_dev, "%012llo\n", *data);
break;
case DATAO|4:
sim_debug(DEBUG_DATAIO, &imx_dev, "DATAO %012llo\n", *data);
initial_channel = *data & IMX_CHANNEL;
break;
case DATAI|4:
*data = imx_data;
sim_debug(DEBUG_DATAIO, &imx_dev, "DATAI %012llo\n", *data);
imx_data = 0;
imx_samples = 0;
status &= ~IMX_DONE;
clr_interrupt (IMX_DEVNUM);
sim_debug(DEBUG_IRQ, &imx_dev, "Clear interrupt\n");
imx_activate ();
break;
}
return SCPE_OK;
}
t_stat imx_svc (UNIT *uptr)
{
int max_samples;
if (status & IMX_PACK) {
max_samples = 3;
} else {
max_samples = 1;
}
if (imx_samples < max_samples) {
imx_data <<= 12;
imx_data |= imx_sample();
imx_samples++;
}
if (imx_samples == max_samples) {
status |= IMX_DONE;
if (status & 7) {
set_interrupt_mpx (IMX_DEVNUM, status & 7, imx_mpx_lvl);
sim_debug(DEBUG_IRQ, &imx_dev, "Raise interrupt\n");
}
}
imx_activate ();
return SCPE_OK;
}
#if MPX_DEV
/* set MPX level number */
t_stat imx_set_mpx (UNIT *uptr, int32 val, CONST char *cptr, void *desc)
{
int32 mpx;
t_stat r;
if (cptr == NULL)
return SCPE_ARG;
mpx = (int32) get_uint (cptr, 8, 8, &r);
if (r != SCPE_OK)
return r;
imx_mpx_lvl = mpx;
return SCPE_OK;
}
t_stat imx_show_mpx (FILE *st, UNIT *uptr, int32 val, CONST void *desc)
{
if (uptr == NULL)
return SCPE_IERR;
fprintf (st, "MPX=%o", imx_mpx_lvl);
return SCPE_OK;
}
#endif
t_stat imx_set_channel (UNIT *uptr, int32 val, CONST char *cptr, void *desc)
{
int chan, unit, axis, negate = 0;
char gbuf[CBUFSIZE];
CONST char *tptr;
t_stat r;
if (cptr == NULL || *cptr == 0)
return SCPE_ARG;
tptr = get_glyph (cptr, gbuf, ';');
if (tptr == NULL)
return SCPE_ARG;
chan = (int) get_uint (gbuf, 8, IMX_CHANNEL, &r);
if (r != SCPE_OK)
return r;
tptr = get_glyph (tptr, gbuf, ';');
if (tptr == NULL || strncasecmp (gbuf, "unit", 4) != 0)
return SCPE_ARG;
unit = (int) get_uint (gbuf + 4, 10, JOY_MAX_UNITS - 1, &r);
if (r != SCPE_OK)
return r;
tptr = get_glyph (tptr, gbuf, ';');
if (strncasecmp (gbuf, "axis", 4) != 0)
return SCPE_ARG;
axis = (int) get_uint (gbuf + 4, 10, JOY_MAX_AXES - 1, &r);
if (r != SCPE_OK)
return r;
if (*tptr != 0) {
if (strcasecmp (tptr, "negate") != 0)
return SCPE_ARG;
negate = 1;
}
if (negate)
chan = -chan;
imx_map[unit][axis] = chan;
return SCPE_OK;
}
t_stat imx_show_channel (FILE *st, UNIT *uptr, int32 val, CONST void *desc)
{
int nothing = 1;
const char *negate, *comma = "";
int chan, i, j;
if (uptr == NULL)
return SCPE_IERR;
for (i = 0; i < JOY_MAX_UNITS; i++) {
for (j = 0; j < JOY_MAX_AXES; j++) {
chan = imx_map[i][j];
if (chan != JOY_NO_CHAN) {
if (chan < 0) {
chan = -chan;
negate = ";NEGATE";
} else
negate = "";
fprintf (st, "%sCHANNEL=%o;JOY%d;AXIS%d%s", comma, chan, i, j, negate);
comma = ", ";
nothing = 0;
}
}
}
if (nothing)
fprintf (st, "CHANNEL=(NO MAPPINGS)");
return SCPE_OK;
}
const char *imx_description (DEVICE *dptr)
{
return "A/D input multiplexor";
}
#endif