Map message [0x90]

Map message(19 bytes)
BYTE cmd
BYTE[4] key used
BYTE[2] gump art id (0x139D)
BYTE[2] upper left x location
BYTE[2] upper left y location
BYTE[2] lower right x location
BYTE[2] lower right y location
BYTE[2] gump width in pixels
BYTE[2] gump height in pixels