/**
* Reset custom chips
*/
void customreset(void)
{
pendingInterrupts = 0;
/* In case the 6301 was executing a custom program from its RAM */
/* we must turn it back to the 'normal' mode. */
IKBD_Reset_ExeMode ();
/* Reseting the GLUE video chip should also set freq/res register to 0 */
Video_Reset_Glue ();
/* Reset the YM2149 (stop any sound) */
PSG_Reset ();
}
void PSG_Init(unsigned int clock, unsigned int rate)
{
int i, j;
double out;
#if PSG_DEBUG_LEVEL > 0
if (psg_debug_file == NULL)
{
psg_debug_file = fopen("psg.log", "w");
fprintf(psg_debug_file, "PSG logging :\n\n");
}
#endif
for(i = 1; i < 1024; i++)
{
// Step calculation
out = (double) (clock) / (double) (i << 4); // out = frequency
out /= (double) (rate);
out *= 65536.0;
PSG_Step_Table[i] = (unsigned int) out;
}
PSG_Step_Table[0] = PSG_Step_Table[1];
for(i = 0; i < 3; i++)
{
out = (double) (clock) / (double) (1 << (9 + i));
out /= (double) (rate);
out *= 65536.0;
PSG_Noise_Step_Table[i] = (unsigned int) out;
}
PSG_Noise_Step_Table[3] = 0;
out = (double) MAX_OUTPUT / 3.0;
for (i = 0; i < 15; i++)
{
PSG_Volume_Table[i] = (unsigned int) out;
out /= 1.258925412; // = 10 ^ (2/20) = 2dB
}
PSG_Volume_Table[15] = 0;
PSG_Reset();
}
/**
* Reset custom chips
* In case the RESET instruction is called, we must reset all the peripherals
* connected to the CPU's reset pin.
*/
void customreset(void)
{
pendingInterrupts = 0;
/* Reset the IKBD */
IKBD_Reset ( false );
/* Reseting the GLUE video chip should also set freq/res register to 0 */
Video_Reset_Glue ();
/* Reset the YM2149 (stop any sound) */
PSG_Reset ();
/* Reset the MFP */
MFP_Reset ();
/* Reset the FDC */
FDC_Reset ( false );
}
/**
* Reset ST emulator states, chips, interrupts and registers.
* Return zero or negative TOS image load error code.
*/
static int Reset_ST(bool bCold)
{
if (bCold)
{
int ret;
Floppy_GetBootDrive(); /* Find which device to boot from (A: or C:) */
ret = TOS_LoadImage(); /* Load TOS, writes into cartridge memory */
if (ret)
return ret; /* If we can not load a TOS image, return now! */
Cart_ResetImage(); /* Load cartridge program into ROM memory. */
Cart_Patch();
}
CycInt_Reset(); /* Reset interrupts */
MFP_Reset(); /* Setup MFP chip */
Video_Reset(); /* Reset video */
VDI_Reset(); /* Reset internal VDI variables */
NvRam_Reset(); /* reset NvRAM (video) settings */
GemDOS_Reset(); /* Reset GEMDOS emulation */
if (bCold)
{
FDC_Reset( bCold ); /* Reset FDC */
}
Floppy_Reset(); /* Reset Floppy */
if (ConfigureParams.System.nMachineType == MACHINE_FALCON
|| ConfigureParams.System.nMachineType == MACHINE_TT)
{
Ncr5380_Reset();
}
if (ConfigureParams.System.nMachineType == MACHINE_FALCON)
{
DSP_Reset(); /* Reset the DSP */
Crossbar_Reset(bCold); /* Reset Crossbar sound */
}
else
DmaSnd_Reset(bCold); /* Reset DMA sound */
PSG_Reset(); /* Reset PSG */
Sound_Reset(); /* Reset Sound */
ACIA_Reset( ACIA_Array ); /* ACIA */
IKBD_Reset(bCold); /* Keyboard (after ACIA) */
if (ConfigureParams.System.nMachineType == MACHINE_FALCON && !bUseVDIRes)
VIDEL_reset();
else
Screen_Reset(); /* Reset screen */
M68000_Reset(bCold); /* Reset CPU */
DebugCpu_SetDebugging(); /* Re-set debugging flag if needed */
DebugDsp_SetDebugging();
Midi_Reset();
#if defined(__linux__)
nf_scsidrv_reset();
#endif
/* Start HBL, Timer B and VBL interrupts with a 0 cycle delay */
Video_StartInterrupts( 0 );
return 0;
}
