int scpu64_snapshot_write(const char *name, int save_roms, int save_disks, int event_mode)
{
snapshot_t *s;
s = snapshot_create(name, ((BYTE)(SNAP_MAJOR)), ((BYTE)(SNAP_MINOR)), machine_get_name());
if (s == NULL) {
return -1;
}
sound_snapshot_prepare();
/* Execute drive CPUs to get in sync with the main CPU. */
drive_cpu_execute_all(maincpu_clk);
if (maincpu_snapshot_write_module(s) < 0
|| scpu64_snapshot_write_module(s, save_roms) < 0
|| ciacore_snapshot_write_module(machine_context.cia1, s) < 0
|| ciacore_snapshot_write_module(machine_context.cia2, s) < 0
|| sid_snapshot_write_module(s) < 0
|| drive_snapshot_write_module(s, save_disks, save_roms) < 0
|| vicii_snapshot_write_module(s) < 0
|| scpu64_glue_snapshot_write_module(s) < 0
|| event_snapshot_write_module(s, event_mode) < 0
|| keyboard_snapshot_write_module(s)
|| joystick_snapshot_write_module(s)) {
snapshot_close(s);
ioutil_remove(name);
return -1;
}
snapshot_close(s);
return 0;
}
static void read_sdr(cia_context_t *cia_context)
{
if (burst_mod == BURST_MOD_CIA1) {
drive_cpu_execute_all(maincpu_clk);
}
cia_context->c_cia[CIA_SDR] = read_userport_sp1(cia_context->c_cia[CIA_SDR]);
}
static BYTE read_pa(tpi_context_t *tpi_context)
{
BYTE byte;
drive_cpu_execute_all(maincpu_clk);
byte = 0xff;
if (ieee_is_out) {
if (parallel_nrfd) {
byte &= 0x7f;
}
if (parallel_ndac) {
byte &= 0xbf;
}
} else {
if (parallel_dav) {
byte &= 0xef;
}
if (parallel_eoi) {
byte &= 0xdf;
}
}
if (ieee_is_dev) {
if (parallel_atn) {
byte &= 0xf7;
}
}
byte = (byte & ~(tpi_context->c_tpi)[TPI_DDPA]) | (tpi_context->c_tpi[TPI_PA] & tpi_context->c_tpi[TPI_DDPA]);
return byte;
}
BYTE parallel_cable_cpu_read(int type)
{
if (!(drive_context[0]->drive->enable)
&& !(drive_context[1]->drive->enable)) {
return 0;
}
drive_cpu_execute_all(maincpu_clk);
return parallel_cable_cpu_value & parallel_cable_drive_value[0] & parallel_cable_drive_value[1];
}
void parallel_cable_cpu_write(int type, BYTE data)
{
if (!(drive_context[0]->drive->enable)
&& !(drive_context[1]->drive->enable)) {
return;
}
drive_cpu_execute_all(last_write_cycle);
parallel_cable_cpu_value = data;
}
static BYTE read_pb(tpi_context_t *tpi_context)
{
BYTE byte;
drive_cpu_execute_all(maincpu_clk);
byte = ieee_is_out ? 0xff : parallel_bus;
byte = (byte & ~(tpi_context->c_tpi)[TPI_DDPB]) | (tpi_context->c_tpi[TPI_PB] & tpi_context->c_tpi[TPI_DDPB]);
return byte;
}
static BYTE read_pa(tpi_context_t *tpi_context)
{
BYTE byte;
drive_cpu_execute_all(maincpu_clk);
byte = 0x07;
byte += parallel_atn ? 0 : 8;
byte += parallel_dav ? 0 : 16;
byte += parallel_eoi ? 0 : 32;
byte += parallel_ndac ? 0 : 64;
byte += parallel_nrfd ? 0 : 128;
byte = (byte & ~(tpi_context->c_tpi)[TPI_DDPA])
| (tpi_context->c_tpi[TPI_PA] & tpi_context->c_tpi[TPI_DDPA]);
return byte;
}
/* read_* functions must return 0xff if nothing to read!!! */
static BYTE read_ciapa(cia_context_t *cia_context)
{
BYTE byte;
drive_cpu_execute_all(maincpu_clk);
/* this reads the 8 bit IEEE488 data bus, but joystick 1 and 2 buttons
can pull down inputs pa6 and pa7 resp. */
byte = parallel_bus;
if (parallel_debug) {
log_message(LOG_DEFAULT,
"read: parallel_bus=%02x, pra=%02x, ddra=%02x -> %02x\n",
parallel_bus, cia_context->c_cia[CIA_PRA],
cia_context->c_cia[CIA_DDRA], byte);
}
byte = ((byte & ~(cia_context->c_cia[CIA_DDRA]))
| (cia_context->c_cia[CIA_PRA] & cia_context->c_cia[CIA_DDRA]));
return byte;
}
/* Make sure the drive clock counters never overflow; return nonzero if
they have been decremented to prevent overflow. */
CLOCK drivecpu_prevent_clk_overflow(drive_context_t *drv, CLOCK sub)
{
if (sub != 0) {
/* First, get in sync with what the main CPU has done. Notice that
`clk' has already been decremented at this point. */
if (drv->drive->enable) {
if (drv->cpu->last_clk < sub) {
/* Hm, this is kludgy. :-( */
drive_cpu_execute_all(maincpu_clk + sub);
}
drv->cpu->last_clk -= sub;
} else {
drv->cpu->last_clk = maincpu_clk;
}
}
/* Then, check our own clock counters. */
return clk_guard_prevent_overflow(drv->cpu->clk_guard);
}
int c64dtv_snapshot_write(const char *name, int save_roms, int save_disks,
int event_mode)
{
snapshot_t *s;
s = snapshot_create(name, ((BYTE)(SNAP_MAJOR)), ((BYTE)(SNAP_MINOR)),
machine_name);
if (s == NULL) {
return -1;
}
sound_snapshot_prepare();
/* Execute drive CPUs to get in sync with the main CPU. */
drive_cpu_execute_all(maincpu_clk);
if (maincpu_snapshot_write_module(s) < 0
|| c64dtv_snapshot_write_module(s, save_roms) < 0
|| c64dtvdma_snapshot_write_module(s) < 0
|| c64dtvblitter_snapshot_write_module(s) < 0
|| c64dtvmisc_snapshot_write_module(s) < 0
|| ciacore_snapshot_write_module(machine_context.cia1, s) < 0
|| ciacore_snapshot_write_module(machine_context.cia2, s) < 0
|| sid_snapshot_write_module(s) < 0
|| drive_snapshot_write_module(s, save_disks, save_roms) < 0
|| vicii_snapshot_write_module(s) < 0
|| event_snapshot_write_module(s, event_mode) < 0
|| keyboard_snapshot_write_module(s) < 0
|| joyport_snapshot_write_module(s, JOYPORT_1) < 0
|| joyport_snapshot_write_module(s, JOYPORT_2) < 0
|| userport_snapshot_write_module(s) < 0) {
snapshot_close(s);
ioutil_remove(name);
return -1;
}
snapshot_close(s);
return 0;
}
static void read_sdr(cia_context_t *cia_context)
{
if (burst_mod == BURST_MOD_CIA1) {
drive_cpu_execute_all(maincpu_clk);
}
}
