Int 05  - Print Screen                                                     [B]

Desc:  dump the current text screen to the first printer

Notes: normally invoked by the INT 09 handler when PrtSc key is pressed, but
     may be invoked directly by applications
   byte at 0050h:0000h contains status used by default handler
     00h not active
     01h PrtSc in progress
     FFh last PrtSc encountered error
   default handler is at F000h:FF54h in IBM PC and 100%-compatible BIOSes

See Also: INT 10/AH=12h/BL=20h