gcar fix

[Mike Pitts]

>Mike Pitts put the fix in for me and the data was 
>back to normal.


The fix is simple.  The original gcar's read function 
would return a single byte.  It used $FF as the end 
of buffer indicator.  You know why this is not good. 

To fix it, change the read routine to return a short 
integer (or any data type larger than a byte).  In my 
case, I use the value $0100 as the end of buffer 
indicator.

-Mike