Been away for awhile, but I have with me here, a new beta of my ICE font editor, which will edit fonts in 19 different characterflip modes.
When I last left off on this project, I had gotten support in my editor for the GTIA (2x8) modes. Since then, I have split the project into three seperate editors, over two .atr's:
ICE3.TUR will edit in the GTIA modes (Super 9, Super 10, Super 11, HIP, CHIP, APAC)
ICECIN.TUR will edit in what I call the CIN text modes (4x8 ANTIC 4/5 or 8x8 ANTIC 2 grid overlaid onto a GTIA 2x8 grid). These modes are called CIN, MIN, and PCIN, there are 9 of these in total.
ICEIRG.TUR will edit in the 4x8 characterflip modes (Super 0a, Super IRG, Super IRG 2, and DIN a)
To do in the future: Write three more editors, for the other grid combinations (8x8 - 8x8 Super 0, 2x8 - 8x8 CIN 0 modes, and the 2x8 - 8x8 DIN mode). Then, try to merge all these grids into the same program (which will be a massive undertaking!).
I am posting some screenshots from this editor, and am also including updated documentation for these software modes, and also for the character map modes with the GTIA set, for easier reference.
WARNING: ICECIN.TUR will not display properly on Atari800Win due to a bug with Graphics 12/13 with the GTIA set. Use another emulator such as Atari++, or a real Atari for this one.
Just mount one of the .atr's into your emulator, and boot with it. that's all! Then RUN the appropriate .TUR file.