Post by J.B. Wood
Hello, all, and I trust everyone had a joyeux noel. My C-64, two Vic
1541 drives and 1701 monitor still operate just like they did when new
35 years ago. (I'm surprised that the 1541 spindle motor drive belts
haven't disintegrated after all that time!). I hauled out my copy of
John Henry Software's "Christmas Carols" because of the nice hires
screens displayed (accompanying SID music just has an organ sound) .
Does anyone know of an easy way to capture those screens and store them
in a Koala or other CBM recognized format? Thanks for your time and
PS - I'm also surprised that after 35 years my 5.25" floppies are still
This sure was harder than I had thought it would be!
I tried both, saving from Action Catridge Plus's menu, and from VICE's "Snapshot->Save media file..." option, but each time I tried, the bitmap came out garbled. It _is_ located at $2000, this I check "by hand", but somehow the automated image savers fail.
What I ultimately did was: Save the VICE media file in BMP format, then open it in Gimp (with gimp-cbmplugs installed), and export it in .koa format from there.
However, things are still a bit tricky. Let's pick the first song, Angels We Have Heard On High, as an example. What we have is a multicolor bitmap image, overlayed with single-color (hi-res) sprites (the music notes), and a vertically split screen, text mode at the bottom.
We cannot export this from Gimp as a Koala file without doing some adaptions: First I cropped the image to 320x200, removing the border. Next I placed a rectangular selection around the text area, then picked a big brush to overpaint the whole area in background color (i.e., white). Then I scaled the image down to 160x200 (interpolation: none!), and back to 320x200 (again, no interpolation). Now the image is ready for exporting in .koa-format...and indeed, Koala Painter had no trouble opening and displaying it.
While doing some research for this issue, I came upon a forum discussion where someone mentioned a program named "koala2ppm.c". I was unable to obtain such a file or program text. Does anyone reading this know anything about this?
The packaging to both of John Henry Software's products, Christmas Carols and Party Songs, features screenshots that are not from the Commodore 64 version -- at least not the one published. The font is different and there's no glitch at the edge where text borders on graphics. What computer system could these screenshots have been taken from?