CognitiveTPG A799 - Manual (Page 80)

Chapter 4: Programming Commands 80 Revision D 12/09
A799-PG00001D
A word (2 bytes) is used to identify the attribute mapping, with “m” bits 0 – 6 identifying which original attributes should
be mapped:
Original attribute mapped table
m bit on attribute mapped
0 Bold
1 Italic
2 Reverse
3 Underline
4 Double high
5 Double wide
6 Compressed print
The following “s” bits and “m” bit 7 set the attributes that substitute for the mapped set:
Attributes substituted table
m bit on attributes substituted
7 Bold substituted
s bit on attributes substituted
0 Italic
1 Reverse
2 Underline
3 Double high
4 Double wide
5 Compressed print
6 Alternate color
7 Color reverse
This command configures into EEPROM (permanent configuration switch setting) one or two combinations of character
attribute mappings, including substitute attribute settings for color effects. The attributes of the character code are used
to form the desired pixel character when the code is placed into the raster print buffer. An “m” bit value set to on in the
“original attribute mapped table” above will have its attributes set to the corresponding bit value of “s” in the “attributes
substituted table”. If m = 0 then no substitution takes place.
The command is available only in A760 native mode. Once attributes have been defined and enabled they can be used in
any emulation mode. A760 native mode must be used to turn the feature off.
The operational theory of this command is that if (input character attributes) AND (original) = (original); then (output
character attributes) = ([original] XOR [input character attributes]) OR (substituted). The input character’s original
attributes are mapped to the substituted attributes, but any attributes not specified for mapping are unchanged.
In the tables you will see that there are 7 input attributes and 9 outputs. It is expected that the alternate color attribute will
be used most. For example, when the alternate color attribute is combined with the reverse substitution attribute, the result
is white characters on a color background. The color reverse attribute without alternate color will print black text on a
color background.
Any mappings utilizing compressed and/or double-wide attributes will effect the length of a line and could cause
unintended line wraps. Mappings containing double-high attributes could cause unintended receipt lengths.
When both attribute mappings are set, processing is perform in order sequence. When two text attribute substitutions
contain conflicting dependent remappings, the result is undefined.