Technical data
Table Of Contents
- 0. i Cover B
- 0. i Copyright B
- 0. i TOC B
- 1. i Introduction B
- 2. i Programming Concepts B
- 3. i Code Quick Reference B.backup
- 4. i Standard Command Codes B
- 5. i Optional Command Codes B
- 6. i Bi-Directional Communications B
- 7. i Appendix B
- 7
- appendix
- custom graphics
- CUSTOM GRAPHICS EXAMPLE
- 1. Determine the matrix size for the graphic. It must be in 8 dot by 8 dot blocks. The example here has six blocks horizontally and six blocks vertically (48 x 48).
- 2. Lay out a grid and draw the image on the grid.
- 3. Transfer the image into a bit map representation and then into hexadecimal format:
- 4. Using the hexadecimal data, send the following code to print the graphic image as designed.
- 5. To send the data in binary format, the software must convert the data into binary format before transmitting it to the printer. Using the BASIC programming language for example, this is done by notation “CHR$ (&HC0)” which sends the hexidecima...
- PCX GRAPHICS EXAMPLE
- CUSTOM GRAPHICS EXAMPLE
- printer configuration commands
- reference tables
Unit 7: Appendix
“i” Programming Reference
7-5 PN: 9001158B
CLOSE #1
The printer output for both the hexadecimal and binary format example is:
PCX GRAPHICS EXAMPLE
A graphics file in a PCX format may also be transmitted to the printer. The file must not be larger than 32K bytes
(DOS file size reported in a DIR listing). For example, the WIZ.PCX image shown below has a file size of 15076
bytes.
The uncompressed size (PCX is a compressed file) of the file must not be greater than 64K bytes. Generally this is
not a problem unless the graphic image is surrounded by large amount of white space which the PCX algorithm
can compress very efficiently. If this is the case, the file should be recaptured to eliminate the surrounding white
space as much as possible. The following basic program will send and print this file:
OPEN .WIZ.PCX. FOR INPUT AS #2
DA$ = INPUT$(15706, #2)
C$ = CHR$(27)
WIDTH .LPT1:., 255
LPRINT C$; .A.;
LPRINT C$; .V150"; C$; .H100"; C$; .GP15706,.; DA$
LPRINT C$; .Q1"; C$; .Z";
CLOSE #2
The printer output for this program is: