/* Initialize the hardware-level drive emulation (should be called at least
once before anything else). Return 0 on success, -1 on error. */
int drive_init(void)
{
unsigned int dnr;
drive_t *drive;
if (rom_loaded)
return 0;
drive_init_was_called = 1;
driverom_init();
drive_image_init();
drive_log = log_open("Drive");
for (dnr = 0; dnr < DRIVE_NUM; dnr++) {
char *logname;
drive = drive_context[dnr]->drive;
logname = lib_msprintf("Drive %i", dnr + 8);
drive->log = log_open(logname);
lib_free(logname);
drive_clk[dnr] = 0L;
drive->clk = &drive_clk[dnr];
drive->mynumber = dnr;
}
if (driverom_load_images() < 0) {
resources_set_int("Drive8Type", DRIVE_TYPE_NONE);
resources_set_int("Drive9Type", DRIVE_TYPE_NONE);
resources_set_int("Drive10Type", DRIVE_TYPE_NONE);
resources_set_int("Drive11Type", DRIVE_TYPE_NONE);
return -1;
}
log_message(drive_log, "Finished loading ROM images.");
rom_loaded = 1;
drive_overflow_init();
for (dnr = 0; dnr < DRIVE_NUM; dnr++) {
drive = drive_context[dnr]->drive;
drive->drive_ram_expand2 = NULL;
drive->drive_ram_expand4 = NULL;
drive->drive_ram_expand6 = NULL;
drive->drive_ram_expand8 = NULL;
drive->drive_ram_expanda = NULL;
machine_drive_port_default(drive_context[dnr]);
if (drive_check_type(drive->type, dnr) < 1)
resources_set_int_sprintf("Drive%iType", DRIVE_TYPE_NONE, dnr + 8);
machine_drive_rom_setup_image(dnr);
drive->rtc_offset = (time_t)0; /* TODO: offset */
drive->ds1216 = ds1216e_init(&drive->rtc_offset);
drive->ds1216->hours12 = 1;
}
for (dnr = 0; dnr < DRIVE_NUM; dnr++) {
drive = drive_context[dnr]->drive;
drive->gcr = gcr_create_image();
drive->p64 = lib_calloc(1, sizeof(TP64Image));
P64ImageCreate(drive->p64);
drive->byte_ready_level = 1;
drive->byte_ready_edge = 1;
drive->GCR_dirty_track = 0;
drive->GCR_write_value = 0x55;
drive->GCR_track_start_ptr = drive->gcr->data;
drive->GCR_current_track_size = 0;
drive->attach_clk = (CLOCK)0;
drive->detach_clk = (CLOCK)0;
drive->attach_detach_clk = (CLOCK)0;
drive->old_led_status = 0;
drive->old_half_track = 0;
drive->side = 0;
drive->GCR_image_loaded = 0;
drive->P64_image_loaded = 0;
drive->P64_dirty = 0;
drive->read_only = 0;
drive->clock_frequency = 1;
drive->led_last_change_clk = *(drive->clk);
drive->led_last_uiupdate_clk = *(drive->clk);
drive->led_active_ticks = 0;
rotation_reset(drive);
drive_image_init_track_size_d64(drive);
/* Position the R/W head on the directory track. */
drive_set_half_track(36, drive);
drive_led_color[dnr] = DRIVE_ACTIVE_RED;
}
for (dnr = 0; dnr < DRIVE_NUM; dnr++) {
drive = drive_context[dnr]->drive;
driverom_initialize_traps(drive, 1);
drivesync_clock_frequency(drive->type, drive);
rotation_init((drive->clock_frequency == 2) ? 1 : 0, dnr);
if (drive->type == DRIVE_TYPE_2000 || drive->type == DRIVE_TYPE_4000) {
drivecpu65c02_init(drive_context[dnr], drive->type);
} else {
drivecpu_init(drive_context[dnr], drive->type);
}
/* Make sure the sync factor is acknowledged correctly. */
drivesync_factor(drive_context[dnr]);
/* Make sure the traps are moved as needed. */
if (drive->enable)
drive_enable(drive_context[dnr]);
}
return 0;
}
static int drive_resources_type(int val, void *param)
{
unsigned int type, dnr;
int busses;
drive_t *drive, *drive0;
char *rtc_device = NULL;
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;
}
}
if (type == DRIVE_TYPE_2000 || type == DRIVE_TYPE_4000) {
if (drive->type != DRIVE_TYPE_2000 && drive->type != DRIVE_TYPE_4000) {
rtc_device = lib_msprintf("FD%d", dnr + 8);
drive->ds1216 = ds1216e_init(rtc_device);
drive->ds1216->hours12 = 1;
lib_free(rtc_device);
}
} else {
if (drive->type == DRIVE_TYPE_2000 || drive->type == DRIVE_TYPE_4000) {
if (drive->ds1216) {
ds1216e_destroy(drive->ds1216, drive->rtc_save);
drive->ds1216 = NULL;
}
}
}
switch (type) {
case DRIVE_TYPE_1540:
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;
}
}
