4.2BSB Buffered I/O buffersize

[Jay Roth]

I've got a program that is having trouble getting input because of the 
limitations of the input buffer for buffered i/o (about 256), I'm occasionally
getting myself into trouble.

1) Is there a way to change the buffersize for reading input?
2) Is there a non-buffered way to do this?

I want to read up to (and including) a carriage return (equivalent to gets).
Any ideas?  Thanks in advance.