Help with INPUT bit read

[janiga]

Hello,
I am interfacing a card reader with my project and am having a bit of trouble figuring out how to store the data read into my variable.
I am reading data on two pins my question is, as my pin goes low indicating each bit read, how can I move the bits into my variable.

Example:

int readpin;

if (input(PIN_A0)==0)
readpin = bits read on input(PIN_A0);

For instance if I get four low pulses I want my variable to store a 0b00001000, if only two pulses then 0b00000010;

Thanks!

[PCM programmer]

Look at the CCS example files in which they do software SPI.
Here's part of the code from the 25640.C file. They want to
read 8 bits from the eeprom into the byte variable 'data'.
They create a for() loop that executes 8 times, once for each bit.
They use the input() function to read the eeprom pin, and they
use the shift_left function to shift the bits into the 'data' variable.
They are also do a short clock pulse after each read operation.