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- Short: NES CHR-ROM Creator
- Author: Chris Covell (ccovell@direct.ca)
- Uploader: Chris Covell
- Type: misc/emu
-
- Raw2CHR is a small program that creates NES Character-ROM data from
- a raw binary picture. This is useful for NES demo or game coders
- on the Amiga (or other computers) who wish to convert their graphics
- into a format usable in their NES program. Before making this program,
- if I wanted to import a graphic into an NES CHR-ROM, I would have to copy
- the image over to my Macintosh, save it as a PICT, then load it up in a
- buggy and slow program on the Mac, bring it back over to the Amiga, then
- chop off the CHR data from my NES demo. What a pain in the butt, I can
- tell you! I won't even get into what I had to do to convert my images
- into a 128x256-pixel image which that Mac "program" required of me.
-
- I made this program because I wanted to speed up the time spent making
- graphics for the NES, and because Lennart _still_ hasn't gotten around to
- implementing IFF importation into GoldNESt!! Hey, Lennart!!
-
- Now all I have to do to make CHR-roms is save my graphics as a brush in
- my favourite Amiga program, convert it to a raw binary format, then run
- it through Raw2CHR. It _really_ saves time!
-
- Usage
- -----
- At the command line, type in Raw2CHR infile outfile [-w]
-
- The infile is the raw binary graphic that you want to convert to a CHR-ROM
- format. Several programs on different platforms can create this type of
- file for you. On the Amiga, a program called ArtPro is good. Here's how
- you should go about the process:
-
- 1) Draw (or import) your graphics in a paint program. Make sure the
- graphics are 4 colours only (as that is the bit depth of the NES!!) and
- 256 or fewer pixels in width (as the NES' horizontal resolution is 256
- pixels).
-
- 2) Pick up a brush (or selection) of the entire image having a width of
- either 128 or 256 pixels, depending on whether the entire image will fit
- at most into 128 or 256 pixels. Don't worry if you're picking up a bunch
- of empty space; you _can_ compress that later. The height of the region
- that you pick up should be a multiple of 8. You should note that the
- size of one NES CHR-ROM bank is 8192 bytes, which translates into either
- a 256x128 or 128x256-pixel image. Any greater than that, and the remaining
- graphics will spill over into another bank.
-
- 3) Save the image to disk, and load the image into a graphics conversion
- program. (I'll use ArtPro.) Now, save the image as a RAW file in BINARY
- format (ie, not as source or anything). The bitplanes must be chosen as
- being INTERLEAVED, not planar.
-
- 4) Run Raw2CHR, specifying the raw data as the infile, and the CHR-ROM as
- the outfile. If you saved image as a 128-pixel-wide file, then you don't
- need to specify anything else. If your saved image is a full 256 pixels
- wide, then you need to specify the "-w" switch.
-
- Raw2CHR should now have created a CHR-ROM file from your image. If your
- image was bigger than what would have fit into one CHR bank and you would
- like to compress the data, you can use my program, "CHARlie" to do so.
- Use the "-c" switch in CHARlie, and make several passes with it over the
- output files. The graphics data should then be compressed as much as
- possible into your CHR-ROM.
-
- This program is just a small little utility, so I didn't spend (much) of a
- time (at all) coding it. As such, it is again in my favourite flavour of
- spaghetti-code. The C source code is included, if you want to improve on
- it at all.
-
-
- Other things of mine which you should check out are:
-
- pix/anim/AmiBanner.lha ;An animating GIF banner that supports Amiga.
- pix/boot/Win95BURN.lha ;My Windows'95 trasher. Burn, baby burn!!!
- pix/boot/Win95BURN.jpg ;A JPEG version of that pic.
- pix/boot/WinBURN24.lha ;A 24-bit IFF version of that pic.
- pix/wb/BeBoxWBs.lha ;Some pics of my WB using the BeIcons.
- pix/wb/JapanWB.lha ;A Japanese Workbench. ;-)
- pix/wb/HAMBrowse.lha ;A Pic showing how to browse the WWW in HAM!
- pix/icon/BeIcons_2.lha ;A set of NewIcons in the BeOS style! (and more!)
- pix/trace/SidMan*.lha ;Concept Render of a SID-Playing Walkman.
- pix/trace/SidManLCD.lha ;LCD texture from the SID walkman.
- gfx/aga/HUGEBench.lha ;Some monitor settings for a HUGE Workbench!
- text/font/C-64Font.lha ;A Commodore-64 font with European accents.
- misc/emu/Snd2Mid.lha ;Converts NES PSG songs to MIDI!!
- misc/emu/CHARlie.lha ;Compresses NES CHR-ROM graphics.
-
- And of course, my webpage at http://mypage.direct.ca/c/ccovell/
- It has lots of stuff that you might enjoy exploring.
-
- See ya!
-