hello every body
i m sachin Gupta from KIET Ghaziabad.
i m new to Rabbit Micro Controller I want to know Some thing as i show the code that is:

#define SYSIO
#define RECEIVER 0 //Laser Receiver, Port A bit 0

void main()
{
int laserInput;

WrPortI(PBDDR, &PBDDRShadow, 0x00);

laserInput = 0;

while (1)
{
laserInput = RdPortI(PBDR);

printf("laser input = %d\n", laserInput);
}
}

it run & give the response Is

""" laser input = 62 """"

cont........

but i want to know

there is one function RdPortI(PBDR)
And Function
WrPortI(PBDDR, &PBDDRShadow, 0x00);
plese tell me

functionalty of these function and Why Use "PBDR"

please give me response on my e-mailid s...@gmail.com

my contact no is +91- 09259065693

please response

i m waiting
please help me



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