Programmer's Manual

Appendix N – Image Loading

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Appendix N

Image Loading

The printer will accept four types of image files: .BMP, .IMG, .PCX and a special Datamax 7-

bit ASCII file (as defined in this section). Use of the Datamax 7-bit ASCII format will require

at least twice as much data transmission time as the other formats, (see <STX>I). The

Datamax ASCII image file format is made up of a set of records with identical formats, each

representing a dot row of the image; a terminator follows the last of these records.

Dot-row record

Terminator

Each dot-row record has the following format:

Syntax:

80nndd...

Where:

- Is the number of character pairs in dd...d, represented in

ASCII hex.

dd…d

- Is dot data, character pairs, ASCII hex, 00-FF.

Duplicate records may be encoded using a repeat data record, following the data record that

needs duplicating. The repeat data record format is:

Syntax:

0000FFnn

Where:

- Is the number of duplicates, ASCII hex, 00-FF.

The terminator, last record, at the image download is: FFFF<CR>