Int 7F Fn C7  - Alloy Mw386 - Read Console Data Byte                       [N]

   AH = C7h

Return: CF clear if successful
       AL = byte read
   CF set on error (no data available or caller is not remote user)

Note:  used to read data after placing console in mode 2 or 3 (see AH=C5h)

See Also: AH=C5h,AH=C6h,AH=C8h