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GSX-86 Device Specific Information
HEWLETT-PACKARD 7220 GRAPHICS PLOTTER
FILENAME
DD7220.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
2400 baud
COMMUNICATIONS
Standard serial communications (RS-232C).
GRAPHIC INPUT (GIN)
The pen holder is used to indicate what point is to be
input. The pen holder is moved by pressing the
position keys on the front panel. When the cursor is
at the desired location, the point can be selected by
pressing ENTER. This causes the coordinates of the
point to be transmitted back to the user program.
TEXT
The HP 7220 has continuous scaling of character
sizes. Text can be rotated in one-degree increments.
MARKERS
I
2
+
3
*
4 0
5
X
LINESTYLE
The 7220 plotter has seven hardware linestyles.
Linestyle I is solid, and linestyles 2 - 7 are combina-
tions of dashed and dotted lines.
COLOR
The 7220 has eight pens. The index parameters in
the routines that set a color index correspond
directly to a plotter pen number (i.e. index 0 corres-
ponds to pen I, index I to pen 2, ... index 7 to pen 8).
Indices greater than 7 are mapped to pen 8. Indices
less than 0 are mapped to pen I.
K-21
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