Microcom 334M Operator's Manual page 139

Downloadable Fonts
<Image Data> is the compressed binary image.
7.4.1.2 Save Compressed FONT to FLASH (D135)
The following is the format of the ^D135 command when used to store a compressed FONT
file into FLASH.
^A<FLASH Memory Slot Number>^D135<CR>
<Rotation> <Count> <Image Data>
Where:
<FLASH Memory Slot Number> is the memory slot location (1-120) where the FONT will be
saved in the printer's FLASH memory. The printer uses the same TCI of "7" to select
downloadable fonts or graphics for storage into FLASH memory. Therefore, a font and a
graphic cannot have the same Slot Number or CGN number.
<Rotation> is an 8-bit integer, 0 for an upright FONT and 1 for a FONT rotated 90-degrees
counter-clockwise.
<Count> is a 32-bit integer, least significant byte first. This is the number of uncompressed
bytes that the FONT uses, not the number of bytes that will actually be transmitted. Due to
compression, the number of bytes transmitted will normally be less than this number.
<Image Data> is the compressed binary image.
7.4.2 Save FONTS to FLASH (^D135)
^A ^D Command
xxyy 135 Save FONTS to FLASH.
This command is not normally seen by the user. It is put into a FONT file by
the FONT converter program which generates a special ^Axxyy^D135 code
which is placed at the beginning of the FONT download file. The ^Axxyy tells
the printer the overall size of the file according to this format:
xx = the number of additional 64KB sectors in the FONT file set
yy = CGN # (1-255)
If xx = 00, then the FONT fits into one 64Kbyte sector of memory and there
are no additional sectors required for the FONT.
If xx > 00, then the FONT is larger than one 64KB sector, and xx is the
number of ADDITIONAL 64KB sectors needed for the FONT. The xx field >
00 signals the printer to get ready for a multi-sector FONT download. Each
subsequent download contains a header with the xx field decremented by 1.
The last download file has a header field xx = 00.
EXAMPLE: ^A0124^D135
FONT download for FLASH memory is coming. The download will be 2
sectors long, and the printer will access the FONT in FLASH memory using
CGN #24 and TCI #7. The ^A0124^D135 command will be right at the
beginning of the file. So the ^D135 command is never sent by itself, it's
always in a FONT download file, and the user never really sees it.
7-3
This command tells the printer that an extended
334M Operator's Manual - 880060-0110
Chapter 7