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???
06/26/06 10:19
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#119089 - More on Lookup tables
Responding to: ???'s previous message
Sorry delay in getting back. Yes, I used bitblt as a useful function in delphi for fast writing of bitmaps, so aware of its use, but I did a search based on suggested bitblt, and came up with no info about lookup table.

However here are another couple of useful urls:
http://www.picmodules.com/acatalog/...loads.html
and also on ZILog site there is a .com convertor which does not require much work to create a graphic lookup table:
http://www.zilog.com/docs/z8en...an0196.pdf
Converting the BMP Image to HEX Value
To display a given BMP image on a graphic LCD, it is necessary to convert the
BMP image to a stream of HEX values. A utility file, Z_bmptohex.exe, that
enables the user to convert the BMP image to a stream of HEX values, is provided
in the source code files associated with this Application Note.
This is a command line utility that reads data from the BMP file. This removes the
BMP header (which is 62 bytes) and stores the data into a two dimensional array
of constant characters. This utility also creates a file, filename_bmp.inc and
stores the hex data in that file.
The Z_bmptohex.exe file supports the following types of command line arguments.
1. Z_bmp_to_hex <filename.ext>
In this case, only filename.bmp is entered as the command line argument.
The output file is created in the working directory itself.

Al.

List of 7 messages in thread
TopicAuthorDate
Lookup table for graphics display            01/01/70 00:00      
   BitBlt            01/01/70 00:00      
   Bitblt or comparable not available            01/01/70 00:00      
      Not available?            01/01/70 00:00      
         More on Lookup tables            01/01/70 00:00      
   Some useful urls (lcd image header file)            01/01/70 00:00      
   Use Excel            01/01/70 00:00      

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