BladeJunker, on Sat Mar 31, 2012 7:22 PM, said:
Hello I'm a retro enthusiast who likes to draw pixel doodles/mockups and study hardware. The problem is I can't find a bitmap that contains the entire built in Intellivision font found on the system EPROM. As I could not find it even after hours of searching and since I'm not tech savy enough to extract it myself I was hoping someone here could help.
I also need a bitmap approximation of the 16 colors used on the Intellivision IE. the RGB or something close to that for the sake of posting a pixel art guide for the INTV. This guide will also contain hardware specific limitations too but I need these basics for the pixel art types.
Anyway if you can help that would be most appreciated.
jzIntv may be able to help you on both counts.
You can use the "show_grom" utility that comes with it to dump the contents of GROM. I haven't posted the bitmap myself, but the show_grom utility will generate the bitmaps for you for each character. To make this easy, I'm going to assume you are on a PC and that you can just copy everything into one directory to do your work.
Copy the file "show_grom.exe" from jzintv\bin into this new directory. Also copy in "grom.bin". Then in a command window, do this:
show_grom -h grom.bin > g.html
This will make 256 files named "grom_00.gif" through "grom_FF.gif" with all 256 pictures available from the GROM. The uppercase alphabet begins at grom_21.gif. The lowercase alphabet begins at grom_41.gif. If you open up the file "g.html", you'll get an HTML table that shows all of the pictures. Each cell has one of the 8x8 GIFs.
(Note: If you want to make the GIFs display bigger, you can use "show_grom -h -x 32 -y 32 grom.bin > g.html". This will display them as 32x32 images, although the GIFs themselves will remain 8x8. You can replace the '32' with whatever number you like. Modern web browsers 'blur' the bitmaps when they scale up. Rest assured the actual 8x8 GIFs are not blurry.)
For the colors, well, I will state for the record that jzIntv's color table is far from perfect. That said, the file jzintv\doc\color\colors_new.png snapshots the palette that jzIntv uses.