//---------------------------------------------------------------------------
UINT8
PortRead (UINT16 PortNo)
{
switch (PortNo & 0xff)
{
case 0x0:
pending_command = 0;
return sound_code;
break;
case 0x4:
return YM2610_status_port_0_A_r (0);
break;
case 0x5:
return YM2610_read_port_0_r (0);
break;
case 0x6:
return YM2610_status_port_0_B_r (0);
break;
default:
//printf("Unimplemented Z80 Read Port: %d\n",PortNo&0xff);
break;
};
return 0;
}
uint8 mame_z80_readport16(uint16 PortNo)
#endif
{
//static int bank[4];
//printf ("read _port_ %x \n",(PortNo & 0xff));
switch( PortNo & 0xff)
{
case 0x0:
pending_command = 0;
return sound_code;
break;
case 0x4:
return YM2610_status_port_0_A_r(0);
break;
case 0x5:
return YM2610_read_port_0_r(0);
break;
case 0x6:
return YM2610_status_port_0_B_r(0);
break;
/*
case 0x08:
{
bank[3] = 0x0800 * ((PortNo >> 8) & 0x7f);
return 0;
break;
}
case 0x09:
{
bank[2] = 0x1000 * ((PortNo >> 8) & 0x3f);
return 0;
break;
}
case 0x0a:
{
bank[1] = 0x2000 * ((PortNo >> 8) & 0x1f);
return 0;
break;
}
case 0x0b:
{
bank[0] = 0x4000 * ((PortNo >> 8) & 0x0f);
return 0;
break;
}
*/
default:
//printf("Unimplemented Z80 Read Port: %d\n",PortNo&0xff);
break;
};
return 0;
}
/* Z80 IO port handler */
inline uint8 z80_port_read(uint16 PortNo)
{
// printf("z80_port_read PC=%04x p=%04x ",cpu_z80_get_pc(),PortNo);
switch (PortNo & 0xff)
{
case 0x0:
pending_command = 0;
return sound_code;
break;
case 0x4:
//printf("v=%02x\n",YM2610_status_port_0_A_r(0));
return YM2610_status_port_0_A_r(0);
break;
case 0x5:
//printf("v=%02x\n",YM2610_read_port_0_r(0));
return YM2610_read_port_0_r(0);
break;
case 0x6:
//printf("v=%02x\n",YM2610_status_port_0_B_r(0));
return YM2610_status_port_0_B_r(0);
break;
/*
case 0x08:
//printf("v=00 (sb3)\n");
//cpu_z80_switchbank(3, PortNo);
return 0;
break;
case 0x09:
//printf("v=00 (sb2)\n");
//cpu_z80_switchbank(2, PortNo);
return 0;
break;
case 0x0a:
//printf("v=00 (sb1)\n");
//cpu_z80_switchbank(1, PortNo);
return 0;
break;
case 0x0b:
//printf("v=00 (sb0)\n");
//cpu_z80_switchbank(0, PortNo);
return 0;
break;
*/
default: break;
};
return 0;
}
//---------------------------------------------------------------------------
UINT16 PortRead(UINT16 PortNo, struct z80PortRead *ptr)
{
//static int bank[4];
switch( PortNo & 0xff)
{
case 0x0:
pending_command = 0;
return sound_code;
break;
case 0x4:
return YM2610_status_port_0_A_r(0);
break;
case 0x5:
return YM2610_read_port_0_r(0);
break;
case 0x6:
return YM2610_status_port_0_B_r(0);
break;
/*
case 0x08:
{
bank[3] = 0x0800 * ((PortNo >> 8) & 0x7f); //NG AES/MVS?
return 0;
break;
}
case 0x09:
{
bank[2] = 0x1000 * ((PortNo >> 8) & 0x3f);//NG AES/MVS?
return 0;
break;
}
case 0x0a:
{
bank[1] = 0x2000 * ((PortNo >> 8) & 0x1f);//NG AES/MVS?
return 0;
break;
}
case 0x0b:
{
bank[0] = 0x4000 * ((PortNo >> 8) & 0x0f);//NG AES/MVS?
return 0;
break;
}
*/
default: break;
};
return 0;
}
