141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/device.h>
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#include <86box/gameport.h>
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#include <86box/io.h>
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#include <86box/snd_resid.h>
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#include <86box/sound.h>
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typedef struct ssi2001_t {
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void *psid;
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int16_t buffer[SOUNDBUFLEN * 2];
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int pos;
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int gameport_enabled;
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} ssi2001_t;
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static void
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ssi2001_update(ssi2001_t *ssi2001)
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{
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if (ssi2001->pos >= sound_pos_global)
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return;
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sid_fillbuf(&ssi2001->buffer[ssi2001->pos], sound_pos_global - ssi2001->pos, ssi2001->psid);
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ssi2001->pos = sound_pos_global;
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}
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static void
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ssi2001_get_buffer(int32_t *buffer, int len, void *p)
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{
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ssi2001_t *ssi2001 = (ssi2001_t *) p;
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ssi2001_update(ssi2001);
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for (int c = 0; c < len * 2; c++)
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buffer[c] += ssi2001->buffer[c >> 1] / 2;
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ssi2001->pos = 0;
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}
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static uint8_t
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ssi2001_read(uint16_t addr, void *p)
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{
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ssi2001_t *ssi2001 = (ssi2001_t *) p;
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ssi2001_update(ssi2001);
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return sid_read(addr, p);
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}
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static void
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ssi2001_write(uint16_t addr, uint8_t val, void *p)
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{
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ssi2001_t *ssi2001 = (ssi2001_t *) p;
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ssi2001_update(ssi2001);
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sid_write(addr, val, p);
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}
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void *
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ssi2001_init(const device_t *info)
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{
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ssi2001_t *ssi2001 = malloc(sizeof(ssi2001_t));
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memset(ssi2001, 0, sizeof(ssi2001_t));
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ssi2001->psid = sid_init();
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sid_reset(ssi2001->psid);
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uint16_t addr = device_get_config_hex16("base");
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ssi2001->gameport_enabled = device_get_config_int("gameport");
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io_sethandler(addr, 0x0020, ssi2001_read, NULL, NULL, ssi2001_write, NULL, NULL, ssi2001);
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if (ssi2001->gameport_enabled)
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gameport_remap(gameport_add(&gameport_201_device), 0x201);
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sound_add_handler(ssi2001_get_buffer, ssi2001);
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return ssi2001;
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}
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void
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ssi2001_close(void *p)
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{
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ssi2001_t *ssi2001 = (ssi2001_t *) p;
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sid_close(ssi2001->psid);
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free(ssi2001);
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}
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static const device_config_t ssi2001_config[] = {
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// clang-format off
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{
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.name = "base",
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.description = "Address",
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.type = CONFIG_HEX16,
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.default_string = "",
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.default_int = 0x280,
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.file_filter = "",
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.spinner = { 0 },
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.selection = {
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{
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.description = "0x280",
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.value = 0x280
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},
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{
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.description = "0x2A0",
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.value = 0x2A0
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},
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{
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.description = "0x2C0",
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.value = 0x2C0
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},
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{
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.description = "0x2E0",
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.value = 0x2E0
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},
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{ .description = "" }
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}
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},
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{ "gameport", "Enable Game port", CONFIG_BINARY, "", 1 },
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{ "", "", -1 }
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// clang-format off
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};
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const device_t ssi2001_device =
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{
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.name = "Innovation SSI-2001",
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.internal_name = "ssi2001",
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.flags = DEVICE_ISA,
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.local = 0,
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.init = ssi2001_init,
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.close = ssi2001_close,
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.reset = NULL,
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{ .available = NULL },
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = ssi2001_config
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};
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