ZX Spectrum running BBC BASIC
                   =============================

+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|  | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A |  B | C | D | E | F |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|0x|   |   |   |   |   |   |   |   |   |EXT|   |    |   |ENT|   |   |
|  |   |   |   |   |   |   |   |   |   |c+s|   |    |   |   |   |   |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|1x|   |   |   |   |   |   |   |   |   |   |   |BRK |   |   |   |   |
|  |   |   |   |   |   |   |   |   |   |   |   |cSPC|   |   |   |   |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|2x|Spc| ! | " | # | $ | % | & | ' | ( | ) | * | +  | , | - | . | / |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|3x| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | : | ;  | < | = | > | ? |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|4x| @ | A | B | C | D | E | F | G | H | I | J | K  | L | M | N | O |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|5x| P | Q | R | S | T | U | V | W | X | Y | Z | [  | \ | ] | ^ | _ |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|6x| £ | a | b | c | d | e | f | g | h | i | j | k  | l | m | n | o |
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|7x| p | q | r | s | t | u | v | w | x | y | z | {  | | | } | ~ |Del|
|  |   |   |   |   |   |   |   |   |   |   |   |    |   |   |   | c0|
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+
|8x|<= |<> |>= |TRU|INV|   |   |   |AT |GRP|   |EDIT| <-| ->| Dn| Up|
|  |sQ |sW |sE |c3 |c4 |   |   |   |sI |c9 |   | c1 | c5| c8| c6| c7|
+--+---+---+---+---+---+---+---+---+---+---+---+----+---+---+---+---+

Possible additional keypresses:  Symbol+Space
                                 Symbol+Enter
                                 Caps+Enter