Unisys EFP9800 manual EF4270 Emulation Commands Graphics 5 Dot, Dots Top to Bottom Bit

EF4270 Emulation Commands

Graphics: 5 Dot

Enters or exits graphics printing mode which prints only the top five dots of the column (corresponding to the top five wires of the printhead). These top five dots correspond to the least significant five bits (bits 0-4) of the data sent to the printer as shown in the table.

Dots (Top to Bottom)		Bit
1st Dot (Top)		4		24	16
2nd Dot		3		23	8
3rd Dot		2		22	4
4th Dot		1		21	2
5th Dot (Bottom)		0		20	1
Hexadecimal	Decimal		ASCII
1B 1D	27 29		ESC GS

Use the following characters to define the graphics (least significant five bits):

•Hexadecimal: 20-3F

•Decimal: 32-63

•ASCII: SP-?

Each byte of data sent defines each column of the graphic to be printed. The first byte defines the column in the left margin, with the following bytes defining the columns to the right, for a total of up to 200 columns in the print line. The print line is printed unidirectionally. Graphics and text may be printed on the same line.

Use three Vertical Tab commands (0B) to overlap printing by half a dot with the next line. Each vertical tab advances the paper by 0.02083 inches, with three tabs advancing the paper by 0.062 inches.

Note: This command provides compatibility with earlier model printers. It is generally not used for new applications. See the Graphics command (1E) for the more generally used command.

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