Microcom 465 Betreibershandbuch PDF herunterladen (Seite 72)

6.2 FORMAT OF GRAPHICS FILES

The following section has been provided to assist experienced programmers that wish to create

their own conversion utility or integrate graphics into a custom program.

The 465's graphic format consists of an "Image Descriptor Block" followed by the actual image.

Since the graphic is treated the same as a downloaded character, some positions are not

applicable and will remain constant.

Step #1:

Select a slot (1-16) to store the graphic image in.

^A1^D1065 - this loads the following image into slot #1

Step #2:

Send the Image Descriptor Block. (Note: The following data should be converted to ASCII HEX

before it is sent to the 465.)

7 - (WORD)

Image Height - (WORD) height of image in dots

32 - (BYTE) always 32

9 - (WORD) always 9

Image Height - (WORD) height of image in dots

Image Width - (WORD) width of image in dots

0 - (WORD) always 0

Step #3:

Next comes the image data. It is the actual bitmap pattern converted to ASCII HEX. The image

orientation is flipped upside down for 0 and 180 degree rotations.

***** *

* *

**** <-----this would be stored like this -----> ****

* *

* *****

For 90 and 270 degrees the image would look like the above but rotated left 90 degrees.

* * * * * *

* * * *

* * <-----this would be stored like this -----> * *

* * * *

* * * * * *

Step #4:

Terminate the logo with an escape character (1B hex or ^[).

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Microcom 465 Betreibershandbuch Seite 72