Int 17 Fn 6F02  - Hp Vectra - Extended Bios - "f17_put_buffer" - Print Bu  [b]

   AX = 6F02h
   CX = size of buffer in bytes
   DX = port number (0-3)
   ES:DI -> buffer containing characters to be printed

Return: AH = printer status (see #0555)
   CX = number of bytes successfully printed
   ---on error (AH bit 0 set)---
       ES:DI -> next byte to be sent
   ---if successful---
       ES:DI unchanged

See Also: AH=00h,AX=6F00h,INT 14/AX=6F02h