Microcom 48-466 - Manual (Page 57)

48-466 Operators Manual 51
CHAPTER 6: DOWNLOADABLE GRAPHIC IMAGES
The 466 printer is capable of storing up to 20 graphic images. You may either use the Microcom
"PCX2466.EXE" software utility to convert a PCX or PCC file, or use your own software to convert
a graphics file into a format that the printer can accept.
6.1 PROCEDURE FOR USING PCX2466.EXE UTILITY
A) Type at DOS prompt - PCX2466 filename.ext
B) Follow the on screen instructions and note the slot # the image was placed in.
C) Download resulting file (filename.N66 or .R66) file to printer
D) Section 4.5.3 explains how to access loaded images.
6.2 GRAPHIC IMAGE STRUCTURE
The following graphics file structure is offered to programmers who with to use their own programs
to convert graphic images.
Note: The 48-466 does not differentiate between graphics and fonts. They are both accessed by
using a TCI of 8. Therefore a font and a graphic cannot have the same CGN number. A graphic is
simply a font with only one character and all characters point to the same character.
The 48-466 font structure consists of Microcom LDS commands, a header, a look-up table, a
character descriptor, and character data. All words are in Intel format: low byte, high byte. The
graphic image structure is the same as the font structure. Since a graphic does not need to include
offsets and is generally one 'character' in a 0 degree rotation, the structure can be condensed to
the following...
^AXX^D1065 ;tells printer that a font is coming, XX is the CGN number;
dw ;character orientation
dw ? ;number of pixels high
db 0
db 20h
db 20h
db 20h
dd 4
dw ?
;number of pixels high
dw ? ;number of pixels wide
dw 0
dw 0
dw 0
dw 0
dw 0
dw 0
dw ?
;bytes wide = (pixels_wide + 7) / 8
db ?... ;logo data