How to pass sbit variables to other functions?

Hi All,

I am running into problem, where I could not pass sbit variables to a function.

Here's an example:

My SBIT definitions:

sbit OLD_JTAG_TCK = 0xB0+3;
sbit NEW_JTAG_TCK = 0x80+7;

My Function:
void Pulse_TCK(bit sbJTAG_TCK)
{
sbJTAG_TCK = 1;
}

My Main code:

if (old_hardware)
{
Pulse_TCK(OLD_JTAG_TCK)
}
else
{
Pulse_TCK(NEW_JTAG_TCK)
}
For some reason, the above code does not work as I dont see any activity on the TCK pins. Can anyone please help me how to resolve this issue?. Note that I had used the type bit in my function parameter instead of sbit as the later gives syntax error.