Sharp MZ-800 Service Manual page 43

4. COlOR PLOTTER-PRINTER CONTROL CODES
4-1. Control codes used in the text mode
• Text code ($01)
Places the printer in the text mode.
MZ-800
• Graphic code ($02) ................................................ Same as the BASIC PMOOE statement.
Places the printer in the graphics mode.
• Line up ($03) .......................................................... Same as the BASIC PSKIP statement.
Moves the paper one line in the reverse direction. The line counter is decremented by 1.
• Pen test ($04) ......................................................... Same as the BASIC PTEST statement.
Writes the following patterns to start ink flowing from the pens, then sets scale = 1 (40 chr/line),
colour =0.
Black Blue Green Red
DODO
• Reduction scale ($09)
+
($09)
+
($09)
Reduces the scale from 1 to 0 (80 chr/line).
• Reduction cancel ($09)
+
($09)
+
($OB)
Enlarges the scale from 0 to 1 (40 chr/line).
• Line counter set ($09)
+
($09)
+
(ASCIIh
+
(ASCIIh
+
(ASCII)o
+
($00)
........................................................................... Same as the BASIC PTEST statement.
Specifies the number of lines per page as indicated by the 3 ASCII bytes code. The maximum num-
ber of lines per page is 255. Automatically set to 66 when the power is turned on or the system is reset.
• Line feed ($OA) ....................................................... Same as the BASIC PSKIP statement.
Moves the paper one line in the forward direction. The line counter is incremented by 1.
• Magnify scale ($OB)
Enlarges the scale from 2 to 1. (26 chr/line)
• Magnify scale ($OC)
Reduces the scale from 2 to 1 .
• Carriage return ($00)
Moves the carriage to the left side of the print area.
• Back space ($OE)
Moves the carriage one column to the left. This code is ignored when the carriage is at the left sfde
of the print area.
• Form feed ($OF)
Moves the paper to the beginning of the next page and resets the line counter to O.
• Next colour ($10)
Changes the pen to the next colour.
4-2. Character scale
• The character scale is automatically set to 1 (40 chr/line) when the power is turned on. Afterwards,
it can be changed by the control codes and commands.
• In the graphics mode, the scale can be changed within the range 0 to 63.
• The scale is set to 1 when the mode is switched from graphics to text.
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