int c64_glue_snapshot_read_module(snapshot_t *s)
{
BYTE major_version, minor_version;
int snap_type, snap_alarm_active;
snapshot_module_t *m;
m = snapshot_module_open(s, snap_module_name,
&major_version, &minor_version);
if (m == NULL) {
return -1;
}
if (major_version > SNAP_MAJOR || minor_version > SNAP_MINOR) {
log_error(LOG_ERR,
"GlueLogic: Snapshot module version (%d.%d) newer than %d.%d.",
major_version, minor_version,
SNAP_MAJOR, SNAP_MINOR);
goto fail;
}
if (0
|| SMR_B_INT(m, &snap_type) < 0
|| SMR_B_INT(m, &old_vbank) < 0
|| SMR_B_INT(m, &snap_alarm_active) < 0) {
goto fail;
}
if (snap_type != glue_logic_type) {
log_warning(LOG_DEFAULT,
"GlueLogic: Snapshot type %i differs from selected type %i, changing.",
snap_type, glue_logic_type);
glue_logic_type = snap_type;
}
if (glue_alarm_active) {
glue_alarm_unset();
}
glue_alarm_active = snap_alarm_active;
if (glue_alarm_active && (glue_logic_type == 1)) {
glue_alarm_set();
}
snapshot_module_close(m);
return 0;
fail:
if (m != NULL) {
snapshot_module_close(m);
}
return -1;
}
void c64_glue_set_vbank(int vbank, int ddr_flag)
{
int new_vbank = vbank;
int update_now = 1;
if (glue_logic_type == 1) {
if (((old_vbank ^ vbank) == 3) && ((vbank & (vbank - 1)) == 0) && (vbank != 0)) {
new_vbank = 3;
glue_alarm_set();
} else if (ddr_flag && (vbank < old_vbank) && ((old_vbank ^ vbank) != 3)) {
/* this is not quite accurate; the results flicker in some cases */
update_now = 0;
glue_alarm_set();
}
}
if (update_now) {
perform_vbank_switch(new_vbank);
}
old_vbank = vbank;
}
int c64_glue_snapshot_read_module(snapshot_t *s)
{
BYTE major_version, minor_version;
int snap_type, snap_alarm_active;
snapshot_module_t *m;
m = snapshot_module_open(s, snap_module_name, &major_version, &minor_version);
if (m == NULL) {
return -1;
}
/* Do not accept versions higher than current */
if (major_version > SNAP_MAJOR || minor_version > SNAP_MINOR) {
snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION);
goto fail;
}
if (0
|| SMR_B_INT(m, &snap_type) < 0
|| SMR_B_INT(m, &old_vbank) < 0
|| SMR_B_INT(m, &snap_alarm_active) < 0) {
goto fail;
}
if (snap_type != glue_logic_type) {
log_warning(LOG_DEFAULT,
"GlueLogic: Snapshot type %i differs from selected type %i, changing.",
snap_type, glue_logic_type);
glue_logic_type = snap_type;
}
if (glue_alarm_active) {
glue_alarm_unset();
}
glue_alarm_active = snap_alarm_active;
if (glue_alarm_active && (glue_logic_type == 1)) {
glue_alarm_set();
}
snapshot_module_close(m);
return 0;
fail:
if (m != NULL) {
snapshot_module_close(m);
}
return -1;
}
