segatools/chunihook/jvs.c

92 lines
1.9 KiB
C

#include <windows.h>
#include <assert.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "amex/jvs.h"
#include "board/io3.h"
#include "chuniio/chuniio.h"
#include "jvs/jvs-bus.h"
#include "util/dprintf.h"
struct chunithm_jvs_ir_mask {
uint16_t p1;
uint16_t p2;
};
static void chunithm_jvs_read_switches(void *ctx, struct io3_switch_state *out);
static uint16_t chunithm_jvs_read_coin_counter(void *ctx, uint8_t slot_no);
static const struct io3_ops chunithm_jvs_io3_ops = {
.read_switches = chunithm_jvs_read_switches,
.read_coin_counter = chunithm_jvs_read_coin_counter,
};
static const struct chunithm_jvs_ir_mask chunithm_jvs_ir_masks[] = {
{ 0x0000, 0x0020 },
{ 0x0020, 0x0000 },
{ 0x0000, 0x0010 },
{ 0x0010, 0x0000 },
{ 0x0000, 0x0008 },
{ 0x0008, 0x0000 },
};
static struct io3 chunithm_jvs_io3;
void chunithm_jvs_init(void)
{
io3_init(&chunithm_jvs_io3, NULL, &chunithm_jvs_io3_ops, NULL);
jvs_attach(&chunithm_jvs_io3.jvs);
}
static void chunithm_jvs_read_switches(void *ctx, struct io3_switch_state *out)
{
uint8_t opbtn;
uint8_t beams;
size_t i;
assert(out != NULL);
opbtn = 0;
beams = 0;
chuni_io_jvs_poll(&opbtn, &beams);
out->system = 0x00;
out->p1 = 0x0000;
out->p2 = 0x0000;
if (opbtn & 0x01) {
out->system = 0x80;
} else {
out->system = 0x00;
}
if (opbtn & 0x02) {
out->p1 |= 0x4000;
}
for (i = 0 ; i < 6 ; i++) {
/* Beam "press" is active-low hence the ~ */
if (~beams & (1 << i)) {
out->p1 |= chunithm_jvs_ir_masks[i].p1;
out->p2 |= chunithm_jvs_ir_masks[i].p2;
}
}
}
static uint16_t chunithm_jvs_read_coin_counter(void *ctx, uint8_t slot_no)
{
if (slot_no > 0) {
return 0;
}
return chuni_io_jvs_read_coin_counter();
}