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GSX-86 Device Specific Information
K-26
HOUSTON INSTRUMENTS HIPLOT DMP-3/4-443 MULTIPEN PLOTTER
FILENAME
DDHI3M.SYS
DEVICE INDEX
The actual device index for this device is determined
in the ASSIGN.SYS file, which associates a device
index with a GIOS module (device driver).
MAXIMUM BAUD RATE
9600 baud
COMMUNICATIONS
Standard serial communications (RS-232C). The
Clear to Send (CTS) signal must be functional at the
host and carried through to pin 5 at the plotter
connector. Also pin 9 must be jumpered to pin 7 at
the plotter connector to enable HIPLOT mode 2
communications. The Input/Output uses this form
of handshaking communications since, at high baud
rates, the plotter cannot plot data as fast as it
receives data from the computer. Also note that to
set the baud rate at the plotter end, pin 6 must be
wired to one of the following pins:
GRAPHIC INPUT (GIN)
TEXT
Pin
14
15
16
17
18
19
Baud Rate
9600
4800
2400
1200
600
300
The plotter does not support GIN.
The DMP-3/4-443 has five character sizes. Text can
be rotated in 90-degree increments.
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