#include <stdio.h>
#include <stdint.h>

#define BYTE_TO_BINARY_PATTERN "%c%c%c%c%c%c%c%c"
#define BYTE_TO_BINARY(byte)  \
  (byte & 0x80 ? '1' : '0'), \
  (byte & 0x40 ? '1' : '0'), \
  (byte & 0x20 ? '1' : '0'), \
  (byte & 0x10 ? '1' : '0'), \
  (byte & 0x08 ? '1' : '0'), \
  (byte & 0x04 ? '1' : '0'), \
  (byte & 0x02 ? '1' : '0'), \
  (byte & 0x01 ? '1' : '0')


//--------------------------------------------------------------

uint8_t scratch[16] = {
    0xFF, 0x00, 0x00, 0xFF,
    0x00, 0xFF, 0x00, 0x00,
    0x00, 0x00, 0xFF, 0x00,
    0xFF, 0x00, 0x00, 0x00,
};


int main()
{
    uint16_t tt = 0;

    for(int i = 0; i < 16; i++) {
        if (scratch[i] == 0xFF)
            tt = (tt>>1) | 0x8000;
        else
            tt = tt>>1;

        printf("i=%02d (0x%02X) tt=0x%04X " BYTE_TO_BINARY_PATTERN BYTE_TO_BINARY_PATTERN "\n",
               i,
               scratch[i],
               tt,
               BYTE_TO_BINARY(((tt>>8) & 0xFF)),
               BYTE_TO_BINARY(((tt) & 0xFF)));
    }

    return 0;
}