int vic20_snapshot_read(const char *name, int event_mode)
{
    snapshot_t *s;
    BYTE minor, major;

    s = snapshot_open(name, &major, &minor, machine_name);
    if (s == NULL) {
        return -1;
    }

    if (major != SNAP_MAJOR || minor != SNAP_MINOR) {
        log_error(LOG_DEFAULT,
                  "Snapshot version (%d.%d) not valid: expecting %d.%d.",
                  major, minor, SNAP_MAJOR, SNAP_MINOR);
        goto fail;
    }

    joyport_clear_devices();

    /* FIXME: Missing sound.  */
    if (maincpu_snapshot_read_module(s) < 0
        || vic20_snapshot_read_module(s) < 0
        || vic_snapshot_read_module(s) < 0
        || viacore_snapshot_read_module(machine_context.via1, s) < 0
        || viacore_snapshot_read_module(machine_context.via2, s) < 0
        || drive_snapshot_read_module(s) < 0
        || event_snapshot_read_module(s, event_mode) < 0
        || tapeport_snapshot_read_module(s) < 0
        || keyboard_snapshot_read_module(s) < 0
        || joyport_snapshot_read_module(s, JOYPORT_1) < 0
        || userport_snapshot_read_module(s) < 0) {
        goto fail;
    }

    if (viacore_snapshot_read_module(machine_context.ieeevia1, s) < 0
        || viacore_snapshot_read_module(machine_context.ieeevia2, s) < 0) {
        /* IEEE488 module not undumped */
        resources_set_int("IEEE488", 0);
    } else {
        resources_set_int("IEEE488", 1);
    }

    snapshot_close(s);

    sound_snapshot_finish();

    return 0;

fail:
    if (s != NULL) {
        snapshot_close(s);
    }

    machine_trigger_reset(MACHINE_RESET_MODE_SOFT);

    return -1;
}
int c64dtv_snapshot_read(const char *name, int event_mode)
{
    snapshot_t *s;
    BYTE minor, major;

    s = snapshot_open(name, &major, &minor, machine_name);
    if (s == NULL) {
        return -1;
    }

    if (major != SNAP_MAJOR || minor != SNAP_MINOR) {
        log_error(LOG_DEFAULT,
                  "Snapshot version (%d.%d) not valid: expecting %d.%d.",
                  major, minor, SNAP_MAJOR, SNAP_MINOR);
        goto fail;
    }

    vicii_snapshot_prepare();

    joyport_clear_devices();

    if (maincpu_snapshot_read_module(s) < 0
        || c64dtv_snapshot_read_module(s) < 0
        || c64dtvdma_snapshot_read_module(s) < 0
        || c64dtvblitter_snapshot_read_module(s) < 0
        || c64dtvmisc_snapshot_read_module(s) < 0
        || ciacore_snapshot_read_module(machine_context.cia1, s) < 0
        || ciacore_snapshot_read_module(machine_context.cia2, s) < 0
        || sid_snapshot_read_module(s) < 0
        || drive_snapshot_read_module(s) < 0
        || vicii_snapshot_read_module(s) < 0
        || event_snapshot_read_module(s, event_mode) < 0
        || keyboard_snapshot_read_module(s) < 0
        || joyport_snapshot_read_module(s, JOYPORT_1) < 0
        || joyport_snapshot_read_module(s, JOYPORT_2) < 0
        || userport_snapshot_read_module(s) < 0) {
        goto fail;
    }

    snapshot_close(s);

    sound_snapshot_finish();

    return 0;

fail:
    if (s != NULL) {
        snapshot_close(s);
    }

    machine_trigger_reset(MACHINE_RESET_MODE_SOFT);

    return -1;
}
int cbm2_snapshot_read(const char *name, int event_mode)
{
    snapshot_t *s;
    BYTE minor, major;

    s = snapshot_open(name, &major, &minor, machine_get_name());

    if (s == NULL) {
        return -1;
    }

    if (major != SNAP_MAJOR || minor != SNAP_MINOR) {
        log_error(LOG_DEFAULT,
                  "Snapshot version (%d.%d) not valid: expecting %d.%d.",
                  major, minor, SNAP_MAJOR, SNAP_MINOR);
        goto fail;
    }

    vicii_snapshot_prepare();

    if (maincpu_snapshot_read_module(s) < 0
        || vicii_snapshot_read_module(s) < 0
        || cbm2_c500_snapshot_read_module(s) < 0
        || cbm2_snapshot_read_module(s) < 0
        || ciacore_snapshot_read_module(machine_context.cia1, s) < 0
        || tpicore_snapshot_read_module(machine_context.tpi1, s) < 0
        || tpicore_snapshot_read_module(machine_context.tpi2, s) < 0
        || acia1_snapshot_read_module(s) < 0
        || sid_snapshot_read_module(s) < 0
        || drive_snapshot_read_module(s) < 0
        || event_snapshot_read_module(s, event_mode) < 0
        || tape_snapshot_read_module(s) < 0
        || keyboard_snapshot_read_module(s) < 0
        || joystick_snapshot_read_module(s) < 0) {
        goto fail;
    }

    sound_snapshot_finish();

    return 0;

fail:
    if (s != NULL) {
        snapshot_close(s);
    }

    machine_trigger_reset(MACHINE_RESET_MODE_SOFT);

    return -1;
}
int pet_snapshot_read(const char *name, int event_mode)
{
    snapshot_t *s;
    BYTE minor, major;
    int ef = 0;

    s = snapshot_open(name, &major, &minor, machine_name);

    if (s == NULL) {
        return -1;
    }

    if (major != SNAP_MAJOR || minor != SNAP_MINOR) {
        log_error(LOG_DEFAULT,
                  "Snapshot version (%d.%d) not valid: expecting %d.%d.",
                  major, minor, SNAP_MAJOR, SNAP_MINOR);
        ef = -1;
    }

    if (ef
        || maincpu_snapshot_read_module(s) < 0
        || cpu6809_snapshot_read_module(s) < 0
        || pet_snapshot_read_module(s) < 0
        || crtc_snapshot_read_module(s) < 0
        || pia1_snapshot_read_module(s) < 0
        || pia2_snapshot_read_module(s) < 0
        || petdww_snapshot_read_module(s) < 0
        || viacore_snapshot_read_module(machine_context.via, s) < 0
        || drive_snapshot_read_module(s) < 0
        || event_snapshot_read_module(s, event_mode) < 0
        || tape_snapshot_read_module(s) < 0
        || keyboard_snapshot_read_module(s) < 0
        || joystick_snapshot_read_module(s) < 0) {
        ef = -1;
    }

    if (!ef) {
        acia1_snapshot_read_module(s);  /* optional, so no error check */
    }

    snapshot_close(s);

    if (ef) {
        machine_trigger_reset(MACHINE_RESET_MODE_SOFT);
    }

    sound_snapshot_finish();

    return ef;
}