Adding extra rooms to JSW
                      -------------------------

There are four unused rooms available in JSW.  Rooms 47, 61, 62 and 63. If
the code is modified to allow 8-bit room numbers, then space for six more
rooms become available. If the startup password code is disabled, space for
two more rooms is available. This gives space for twelve extra rooms.

The object table only stores 6-bit room numbers, so only rooms 47, 61, 62
and 63 can have objects in them.

The JSW code needs to be altered thus:

From:                            To:
8404 36 86     LD  (HL),&86      8404 36 87     LD  (HL),&87
8406 2B        DEC HL            8406 2B        DEC HL
8407 36 9F     LD  (HL),&9F      8407 36 CA     LD  (HL),&CA


8912 3A 20 84  LD  A,(&8420)     8912 3A 20 84  LD  A,(&8420)
8915 F6 C0     OR  &C0           8915 EE C0     XOR &C0

These are the spare rooms that are available:

  Addr  Room       Addr  Room       Addr  Room
  9700   87        A700  103        EF00   47
  9B00   91        A800  104        FD00   61
  9E00   94        A900  105        FE00   62
  9F00   95        AA00  106        FF00   63


Spare Sprite Definitions
------------------------
The following sprite definitions are spare:

  Addr  Sprite      Addr  Sprite
  9C00    8
  9C20    9

Spare Guardian Defintions
-------------------------
The following guardian definitions are spare:

  Addr   Guardian   Addr   Guardian
  A3B8     119      A3E0     124
  A3C0     120      A3E8     125
  A3C8     121      A3F0     126
  A3D0     122
  A3D8     123      A3F8 Guardian terminator/ObjectCount