Compuprint 914N, User Manual

Page: 111 / 146

{11} not supported
All graphic characters are 30 dot high, even though anly 24
dots are defined for each column. An underscored character
is defined as a blank graphic character (all zeros) and it is
automatically generated by the printer. A shading character
repeats dots 1-6 of each column as dots 25 through 30
respectively. A line drawing character repeats dots 23 and 24
as the pairs 25 and 26,27 and 28, and 29 and 30.
Bit 5 to 0 The number of dot columns of the character shape minus one.
For example:the character width of Draft generator is 10 dots
and bit 5 to 0 must be set to {9}
Bit 5 to 9 Compression mask description. It is used to optimize the
memory occuption and it is based on the concept that a dot
column equal to the dot column on its left is not stored. You
can can calculate the compression mask of a character only
after designing the entire character. Every bit is associated
with a dot column with the bit 7 of byte 5 associated with the
leftmost column. The bit is set to {1} , if the column is equal
to the preceeding one; otherwise, it is set to {0}. If the
character is longer than 39 dot columns, the remaining dot
columns must be stored without compression.The bit 40 (bit
0 of byte 9) must be 0. If no compression is present in the
character, byte 5 to 9 is composed by all zeros.
If you wish to copy an entry over another entry so that two characters with the
same characteristics and different code are present in the same look up table, the
DLL sequence ESC = {n} {m} {id} {p} {t} has the following meaning:
{n} and {m} indicate the byte number of the sequence. {n} is the low part
and {m} is the high part.
{id} indicate the printer model. The {id} related to your printer is
{23H}
{p} and {t} indicate the memory address of the character that you wish to
replace. {p} is the low part and {t} is the high part.
{data} is the entry (9 bytes) of the character that you want to position
at address specified by {p} and {t}.
C
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mm
an
ds
Appendix A
A78401740-001
A.27