Commodore MPS 1200 - Chapter 7 Commodore Dot Graphics; BIT IMAGE CODING (Commodore mode only)

Chapter 7
COlnlnodore Dot
Graphics
BIT IMAGE CODING
(Commodore mode only)
Format
BASIC
Hex
ON
chr$(8)
08
A bit image is a character programmed onto a 7 X 17 grid. When
the dots are
programmed (placed where you want them on the
grid), it
is printed out by the print head when the pins at the
locations
you have programmed strike to create dots to form an
1mage.
By sending the control code chr$(8) to the printer in Commodore
mode, you enter the Bit Image graphic printing mode. This allows
you to design a'nd print bit image graphics by inputting bit image
data. Each
DATA statement is made up of numbers that represent a
row of dots which, when READ together, make up your bit
graphic image.
To design a bit image graphic, follow the steps
outlined in the
example below.
1. Use a separate piece of paper to design your bit image graphic.
2. Make a dot grid like this, with 7 vertical rows and 16 horizontal
columns.
The numbering of the vertical rows 1S extremely
important.
1 234 5 6 7 890 1 234 5 6
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0 0 0 0 000 0 0
4
000 0 0 0 000 0 0 0 0 0 0 0
8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ()
16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ( l
32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 () ( l
6400000000000000 () ()
7-1