0:500h                   Print Screen Status Byte

Length: 1 byte

Contains the status of the last or current Print Screen operation.

                                                                          

Examination of this byte will reveal the status of the Print Screen
operation. The byte can have the following three values:

               Value              Meaning
00h           Print Screen complete
01h           Print Screen currently in progress
FFh           Error occurred during Print Screen

See also: INT 05h

0:500h Print Screen Status Byte (See INT 05h)