GRANTIC (screen dump) - FujiNetWIFI/fujinet-firmware GitHub Wiki
The GRANTIC printer is a port of Claus Buchholz's PRANTIC screen dump routines, modified to create a 256 color bitmap from an Atari screen by interpreting the display list and display data into a 256 color PNG.
By loading GRANTIC and calling location 8192 ($2000), a dump of the current screen is sent to the printer. (The GRANTIC printer should be selected before attempting this.)