ch64edit for C64

C64 character set editor

Hint: SPACE toggles pixel. Menus are on screen.

And wrote a blog entry. Includes more details on keys for operations.

Abbreviated Memory map - C64

0000-03FF lower RAM
0400-07FF video RAM
0800-1FFF available (was program RAM) ****
2000-2FFF character RAM sets (was program RAM) ****
3000-9FFF program RAM (reduced)
D000-D7FF character ROM set 1 (uppercase/graphics) -- banked
D800-DFFF character ROM set 2 (lowercase/uppercase) -- banked

There is also ch20edit for Vic-20