IBM 4400 manual Select Italic Character Set, Select 9-Pin Graphics Mode, Select Print Quality

Chapter 6 Configuring the Epson FX-1050 Emulation with Control Codes

Select Italic Character Set

ASCII Code ESC t n

Hex Code	1B 74 n
Dec Code	27 116 n
Purpose	Selects the italics characters from hex 80 through hex FF, or
	selects the graphics characters from hex 80 through hex FF.
where:	n = hex 1 selects the graphics character set
	n = hex 0 selects the italics character set
Comment	The graphics character set is the IBM Graphics Code Page 437.

Select 9-Pin Graphics Mode

ASCII Code ESC ^ m n1 n2 d1 ... dk

Hex Code 1B 5E m n1 n2 d1 ... dk

Dec Code 27 94 m n1 n2 d1 ... dk

Purpose Turns on 9-pin bit image graphics mode.

Comment m defines the plot density as shown in Table 42 on page 185. (n1 + 256n2) = The total number of columns.

This mode requires two bytes of graphic data for every column of print. Each column is sent as a pair: d1, d3, ... d(k-1) set the top 8 bits of a normal dot column, just like ESC K; d2, d4, ... dk set the ninth dot in the column (the most significant bit) just below the bottom-most dot of columns d1, d3, ... d(k-1).

Select Print Quality

ASCII Code ESC x n

Hex Code	1B 78 n
Dec Code	27 120 n
Purpose	Selects print quality.
Comment	This command is ignored on thermal printers.

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