Intermec 6820 Series User Manual page 100

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Chapter 5 Control Code Definitions
84
Copy ROM to RAM
The characters in ROM are copied into RAM, so a complete user-defined
character set is created by editing selected characters. This ensures that all
characters are defined when a user-defined character set is selected. This
eliminates the need to unselect the user-defined character set when print-
ing defined characters. Note that this function is only useful with the default
SBCS character set.
Format
Decimal
27 58 0 0 0
Define User-Defined Characters
Characters are redefined by the user in the currently selected mode. How-
ever, they can only be used in draft mode. Note that this function is only
useful with the default SBCS character set.
Format
Decimal
27 38 0 k1 k2 s1
d1 ... d11
where k1 is the character code of the first character to redefine, k2 is the
character code of the last character to redefine (any character between
0–255 can be redefined), and (k1 could equal k2, if only one character
is defined).
For each character defined, 12 bytes of data must be supplied, as follows:
where s1 is the first byte that describes the character format. Bits 0–3
represent the end position in the grid, bits 4–6 represent the start posi-
tion in the grid, and bit 7 determines whether the character uses the top
eight pins or the bottom eight pins of the print head. If bit 7 = 0, the
top eight pins are used. If bit 7 = 1, the bottom eight pins are used. The
start and end positions are ignored during character imaging, but must
be accurate to redefine the character code. d1...d11 is the data that com-
prises the dot image pattern of the defined character.
When printable code expansion is enabled with ESC
Code Area Expansion function, and the user-defined character set is selected
with ESC %" (1), the Select User-Defined Set function, then the codes
"
(less than 20h and greater than 7Fh) can be defined for use and are print-
able.
When printable code expansion is enabled with the Enable Printing of
Codes 128-255 function, and the user-defined character set is selected with
the Select User-Defined Set function, then codes (between 80h and 9Fh)
can be defined for use and are printable.
For a list of these characters, refer to the Printable Code Expansion Charac-
ters table on page 86.
Hex
1B 3A 00 00 00
Hex
1B 26 00 k1 k2 s1
d1 ... d11
6820 Series 80-Column Printer User's Manual
ASCII
ESC ":" NUL NUL NUL
ASCII
ESC "&" k1 k2 s1
NUL
d1 ... d11
I", the Printable
"