— HP 98644A
serial communications interface
dca0 at dio? scode 9 flags 1
dca* at dio?
The 98644A is a single port EIA RS-232C (CCITT V.28) communications interface
with a single character buffer. Such an interface is built-in to all series
Input and output for each line may be set to one of the following baud rates:
50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400.
An optional argument flags
may be set to 1 if
the line should be treated as hard-wired with carrier always present or 0 if
modem control is desired.
- dca0: silo overflow.
- The single-character input “silo” has
overflowed and incoming data has been lost.
Data loss is possible on busy systems with baud rates greater than 300. The
has never been tested with modem control
enabled or on anything but the built-in interface.