[Coco] Ultimaterm problems

[Robert Gault]

Art Flexser wrote:
> This sounds similar to a problem I encountered many years ago with Colorcom-E's
> Xmodem.  After much investigation, I traced it to the fact that the disk
> controller was halting the CPU due to an accumulation of data to be stored to
> disk.  I cured it by patching the terminal program to insert a short pause after
> each block was stored on the disk, allowing the disk controller to catch up with
> the CPU.  You might try seeing if the same problem occurs if you save the data
> to ramdisk instead of physical disk;  if not, you've found the culprit.
> 
> Art

Well the problem occurs whether Ultimaterm saves to a real or RAM disk. 
The problem is there using an alternative program, Tera Term Pro, 
instead of Hyperterminal.

Since the problem of not getting past the 9th data block does not occur 
under NitrOS-9 running OSTerm but only with Ultimaterm under Disk Basic, 
I have to believe there is a problem with Ultimaterm. After all, the 
hardware and PC software is identical. The only difference is the 
software on the Coco.

Also I've tried this at 2400 instead of 19200 baud and that does not 
make any difference.

The problem does not exist going from the Coco to the PC but only going 
from the PC to the Coco. That suggests it is not the transfer protocol 
in use by Ultimaterm but rather some fluke regards file size.