Vic-20 (unexpanded) character set editor
Hint: SPACE toggles pixel. Menus are on screen.
Note: saves to FONT.BIN overwriting any existing file. Manual load from BASIC is initially required to edit a font (after running/initializing program, and exiting).
LOAD "FONT.BIN",8,1
And wrote a blog entry.
Memory map - Unexpanded Vic-20
0000-03FF lower RAM 0400-0FFF (unpopulated) 1000-17FF character RAM (was program RAM) **** 1800-1DFF program RAM (reduced) 1E00-1FFF video RAM 2000-7FFF (unpopulated) 8000-87FF character RAM set 1 (uppercase/graphics) 8800-8FFF character RAM set 2 (lowercase/uppercase) 9000-9FFF I/O and reserved A000-BFFF (unpopulated, or cartridge ROM) C000-DFFF BASIC ROM E000-FFFF KERNAL ROM There is also a more fully featured ch64edit for Commodore 64