John, Thanks for info. Is that a TELCOM limit? The reason I ask is because when running virtual T with TS-DOS, I notice that the buffer can go to 255. Or at least the byte which holds the buffer size. Kurt
On Monday, October 17, 2016 11:36 AM, John R. Hogerhuis <jho...@pobox.com> wrote: On Mon, Oct 17, 2016 at 7:14 AM, Kurt McCullum <kurt.mccul...@att.net> wrote: Even though the buffer is 256 bytes in size, TELCOM sends the XON/XOFF commands when the buffer is only slightly full, so I have had to block the sending of the data in small packets and check for XOFF. The serial receive buffer is 64 bytes. -- John.