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/***************************************************************************
machine.c
Functions to emulate general aspects of the machine (RAM, ROM, interrupts,
I/O ports)
***************************************************************************/
#include "driver.h"
#include "machine/namcoio.h"
#include "sound/samples.h"
UINT8 *gaplus_customio_3;
/************************************************************************************
* *
* Gaplus custom I/O chips (preliminary) *
* *
************************************************************************************/
WRITE8_HANDLER( gaplus_customio_3_w )
{
if ((offset == 0x09) && (data >= 0x0f))
sample_start(0,0,0);
gaplus_customio_3[offset] = data;
}
READ8_HANDLER( gaplus_customio_3_r )
{
int mode;
mode = gaplus_customio_3[8];
if (mode == 2)
{
switch (offset)
{
case 0:
return readinputport( 4 ); /* cabinet & test mode */
break;
case 2:
return 0x0f;
break;
default:
return gaplus_customio_3[offset];
}
}
else
{
switch (offset)
{
case 0:
return readinputport( 4 ); /* cabinet & test mode */
break;
case 1:
return 0x0f;
break;
case 2:
return 0x0e;
break;
case 3:
return 0x01;
break;
default:
return gaplus_customio_3[offset];
}
}
}
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