Six Bits Per Byte - Intermec 4400 User Manual

4400 Bar Code Label Printer User's Manual
Example (continued)
<STX>u12,000001110100000;<ETX>
<STX>u13,000000111000000;<ETX>
<STX>u14,000000010000000;<ETX>
<STX>R<ETX>
When you download a bitmap, the rows become the columns, and the
beginning of the last row becomes the top of the last column. For an example,
study the bitmap above and then look at the following printout.
It is important to remember that the bitmap is defined in terms of columns
rather than rows.
Here is what the graphic looks like when incorporated into a format, enlarged,
and then printed.

Six Bits Per Byte

Six bits per byte format is more compact than one bit per byte. When you use
six bits per byte, you can download large graphics more quickly with the
printer in 4400 mode rather than Emulation mode.
The arrangement of the bits is very important in this format. Every byte is
composed of eight bits (0 through 7), but only bits 0 through 5 are used to map
the image.
Bit 6 (the 7th bit) must always be set to 1 so data can be downloaded to the
printer. Bit 7 (the 8th bit) is reserved for parity and compatibility on 7-bit hosts.
6-16
4400-77