1st doctor control room

When the interior of the TARDIS used by the First Doctor was first seen by Ian Chesterton and Barbara Wright, it was a bright white room, with roundels on the walls and a large computer bank taking up a major part of the "back" wall. These computer banks contained the fault locator and various systems relating to navigational control. (TV: An Unearthly Child, "The Dead Planet") One wall consisted of white hexagons with roundels implemented on them. The Doctor was known to store brandy behind one of these roundels. (TV: Twice Upon a Time)