public static bool Init()
{
try
{
uint nResult = 0;
try
{
nResult = LPT.IsInpOutDriverOpen();
return(true);
}
catch (BadImageFormatException)
{
nResult = LPT.IsInpOutDriverOpen_x64();
if (nResult != 0)
{
IsLPTX64 = true;
}
else
{
return(false);
}
}
}
catch (DllNotFoundException ex)
{
return(false);
}
return(false);
}
public bool Init(int rate)
{
bool result = LPT.Init();
Reset();
return(result);
}
void OPL3LPTWrite(ushort reg, byte data)
{
int i;
short lpt_data;
short lpt_ctrl;
if (port == 0)
{
return;
}
lpt_data = (short)port;
lpt_ctrl = (short)(port + 2);
/* Select OPL3 register */
LPT.outportb(lpt_data, (short)(reg & 0xFF));
if (reg < 0x100)
{
LPT.outportb(lpt_ctrl, 13);
LPT.outportb(lpt_ctrl, 9);
LPT.outportb(lpt_ctrl, 13);
}
else
{
LPT.outportb(lpt_ctrl, 5);
LPT.outportb(lpt_ctrl, 1);
LPT.outportb(lpt_ctrl, 5);
}
/* Wait at least 3.3 microseconds */
for (i = 0; i < 6; i++)
{
LPT.inportb(lpt_ctrl);
}
/* Set value */
LPT.outportb(lpt_data, data);
LPT.outportb(lpt_ctrl, 12);
LPT.outportb(lpt_ctrl, 8);
LPT.outportb(lpt_ctrl, 12);
/* 3.3 microseconds is sufficient here as well for OPL3 */
for (i = 0; i < 6; i++)
{
LPT.inportb(lpt_ctrl);
}
}
void OPL2LPTWrite(ushort reg, byte data)
{
short lpt_data;
short lpt_ctrl;
if (port == 0)
{
return;
}
lpt_data = (short)port;
lpt_ctrl = (short)(port + 2);
/* Select OPL2 register */
LPT.outportb(lpt_data, (short)reg);
LPT.outportb(lpt_ctrl, 13);
LPT.outportb(lpt_ctrl, 9);
LPT.outportb(lpt_ctrl, 13);
/* Wait at least 3.3 microseconds */
//for (i = 0; i < 6; i++)
//for (i = 0; i < 1; i++)
//{
// LPT.inportb(lpt_ctrl);
//}
/* Set value */
LPT.outportb(lpt_data, data);
LPT.outportb(lpt_ctrl, 12);
LPT.outportb(lpt_ctrl, 8);
LPT.outportb(lpt_ctrl, 12);
/* Wait at least 23 microseconds */
//for (i = 0; i < 35; i++)
//for (i = 0; i < 1; i++)
//{
// LPT.inportb(lpt_ctrl);
//}
}
public byte ReadRegister(int port)
{
return(LPT.inportb((short)port));
}
