Concerning this line of code:
MOSI = d & 0x80;
When loading a bit variable from a byte does the MSB of the byte go into the bit variable? I thought the LSB will go into the bit variable. So this line of code:
if( ( d & 0x80) != 0 ) )
MOSI = 1;
else
MOSI = 0;
If I am wrong about loading bit variables, sorry.
This might work also but would be confusing: MOSI = d && 0x80;