/* Disable full drive emulation. */
void drive_disable(drive_context_t *drv)
{
int drive_true_emulation = 0;
drive_t *drive;
drive = drv->drive;
/* This must come first, because this might be called before the true
drive initialization. */
drive->enable = 0;
resources_get_int("DriveTrueEmulation", &drive_true_emulation);
if (rom_loaded) {
if (drive->type == DRIVE_TYPE_2000 || drive->type == DRIVE_TYPE_4000) {
drivecpu65c02_sleep(drv);
} else {
drivecpu_sleep(drv);
}
machine_drive_port_default(drv);
drive_gcr_data_writeback(drive);
}
/* Make sure the UI is updated. */
drive_enable_update_ui(drv);
}
/* Activate full drive emulation. */
int drive_enable(drive_context_t *drv)
{
int drive_true_emulation = 0;
unsigned int dnr;
drive_t *drive;
dnr = drv->mynumber;
drive = drv->drive;
/* This must come first, because this might be called before the drive
initialization. */
if (!rom_loaded) {
return -1;
}
resources_get_int("DriveTrueEmulation", &drive_true_emulation);
/* Always disable kernal traps. */
if (!drive_true_emulation) {
return 0;
}
if (drive->type == DRIVE_TYPE_NONE) {
return 0;
}
/* Recalculate drive geometry. */
if (drive->image != NULL) {
drive_image_attach(drive->image, dnr + 8);
}
/* resync */
drv->cpu->stop_clk = *(drv->clk_ptr);
if (drive->type == DRIVE_TYPE_2000 || drive->type == DRIVE_TYPE_4000) {
drivecpu65c02_wake_up(drv);
} else {
drivecpu_wake_up(drv);
}
/* Make sure the UI is updated. */
drive_enable_update_ui(drv);
return 0;
}
static int drive_resources_type(int val, void *param)
{
unsigned int type, dnr;
int busses;
drive_t *drive, *drive0;
dnr = vice_ptr_to_uint(param);
drive = drive_context[dnr]->drive;
type = (unsigned int)val;
busses = iec_available_busses();
/* if bus for drive type is not allowed, set to default value for bus */
if (!drive_check_bus(type, busses)) {
if (busses & IEC_BUS_IEC) {
type = DRIVE_TYPE_1541;
} else
if (busses & IEC_BUS_IEEE) {
type = DRIVE_TYPE_2031;
} else {
type = DRIVE_TYPE_NONE;
}
}
if (is_drive0(dnr)) {
if (drive_check_dual(type)) {
int drive1 = mk_drive1(dnr);
/* dual disk drives disable second emulated unit */
log_warning(drive->log,
"Dual disk drive %d disables emulated drive %d", dnr, drive1);
drive_resources_type(DRIVE_TYPE_NONE, int_to_void_ptr(drive1));
}
} else {
drive0 = drive_context[mk_drive0(dnr)]->drive;
if (drive0->enable && drive_check_dual(drive0->type)) {
/* dual disk drives disable second emulated unit */
log_warning(drive->log,
"Dual disk drive %d disables emulated drive %d", mk_drive0(dnr), dnr);
type = DRIVE_TYPE_NONE;
}
}
switch (type) {
case DRIVE_TYPE_1541:
case DRIVE_TYPE_1541II:
case DRIVE_TYPE_1551:
case DRIVE_TYPE_1570:
case DRIVE_TYPE_1571:
case DRIVE_TYPE_1571CR:
case DRIVE_TYPE_1581:
case DRIVE_TYPE_2000:
case DRIVE_TYPE_4000:
case DRIVE_TYPE_2031:
case DRIVE_TYPE_1001:
case DRIVE_TYPE_2040:
case DRIVE_TYPE_3040:
case DRIVE_TYPE_4040:
case DRIVE_TYPE_8050:
case DRIVE_TYPE_8250:
if (drive->type != type) {
drive->current_half_track = 2 * 18;
if ((type == DRIVE_TYPE_1001)
|| (type == DRIVE_TYPE_8050)
|| (type == DRIVE_TYPE_8250)) {
drive->current_half_track = 2 * 38;
}
}
drive->type = type;
if (drive_true_emulation) {
drive->enable = 1;
drive_enable(drive_context[dnr]);
/* 1551 drive does not use the IEC bus */
machine_bus_status_drivetype_set(dnr + 8, drive_check_bus(type,
IEC_BUS_IEC));
} else {
drive_enable_update_ui(drive_context[dnr]);
}
drive_set_disk_drive_type(type, drive_context[dnr]);
driverom_initialize_traps(drive);
machine_drive_idling_method(dnr);
return 0;
case DRIVE_TYPE_NONE:
drive->type = type;
drive_disable(drive_context[dnr]);
machine_bus_status_drivetype_set(dnr + 8, 0);
return 0;
default:
return -1;
}
}
