Intermec 6822 6820 Series 80-Column Printer User Manual (for printers purchase - Page 50
Understanding Control Code Definitions, I/O Buffer, Print Image Buffer, Special Notations
View all Intermec 6822 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 50 highlights
Chapter 4 - Control Code Definitions Understanding Control Code Definitions I/O Buffer All characters and control codes received by the printer are stored in this buffer. Characters and controls codes are read from this buffer and acted upon to form the print buffer. Characters are removed from the I/O buffer as they are processed. Print Image Buffer All characters go through this buffer on their way to the printed page. This buffer contains the graphic image of the dots to print, from which characters are rendered. It is cleared when its contents are printed. Special Notations The following information defines notations included in the format definitions of the escape sequences, throughout this section. Special Notations Notation (0) (1) * NUL Description Used in the ASCII column of any of the Format definitions, indicates that its value can only be zero (and not the character "0"). For example: Select Top-Down Printing ESC US (0). Used in the ASCII column of any of the Format definitions, indicates that its value can only be one (and not the character "1"). For example: Select Bottom-Up Printing ESC US (1). When a number (at the end of an escape sequence) is marked with an asterisk, then either the value corresponding to that number or the value of the string character can be used for that number. For example, if 1* is shown, then either the value (1), or the value of the string character (decimal: 49, hex: 31) can be used. The NUL character is represented in the Dec column as 0, in the Hex column as 00, and in the ASCII column as NUL. 34 6820 Series 80-Column Printer User Manual