Splitting Images: Game Status Buffer

Address

Length

Description

2881

Holds the image for the current level.

2

Pointer: Current Level Data

20

Table: Level Data

18

1

1

Game status buffer entry at D828

1

Game status buffer entry at D829

1

Game status buffer entry at D82A

1

Game status buffer entry at D82B

1

Game status buffer entry at D82C

1

Game status buffer entry at D82D

2

Player Cursor Position

1

Game status buffer entry at D830

1

Game status buffer entry at D831

1

Game status buffer entry at D832

1

Game status buffer entry at D833

1

Game status buffer entry at D834

1

Player Cursor Flag

Used by the routines at 54098, StartGame, 58262, Remove_PlayerCursor, Display_PlayerCursor and 62366.

Byte	Meaning
0	Off
1	On

1

Home Arrow Attribute Table Offset

Used by the routine at Handler_HomeArrow.

1

Game status buffer entry at D837

1

1

Game status buffer entry at D839

1

1

Game status buffer entry at D83B

1

Game status buffer entry at D83C

1

Game status buffer entry at D83D

1

Game status buffer entry at D83E

1

Game status buffer entry at D83F

1

Game status buffer entry at D840

1

Game status buffer entry at D841

1

Game status buffer entry at D842

1

Game status buffer entry at D843

1

Game status buffer entry at D844

1

Game status buffer entry at D845

1

Game status buffer entry at D846

1

Game status buffer entry at D847

1

Game status buffer entry at D848

1

Game status buffer entry at D849

2

Game status buffer entry at D84A

4

Game status buffer entry at D84C

3

Game status buffer entry at D850

8

Game status buffer entry at D853

2

Game status buffer entry at D85B

1

Game status buffer entry at D85D

1

Game status buffer entry at D85E

12

Game status buffer entry at D85F

2

Game status buffer entry at D86B

1

Game status buffer entry at D86D

1

3

2

Game status buffer entry at D872

3

2

Screen Position Selected Menu Item

21

Defaults Of Some Kind?

Used by the routine at Game_Initialisation.

2

Game status buffer entry at D88E

2

Game status buffer entry at D890

2

Pointer Level Graphics Data

Will point to one of:

Address	Level
GraphicsData_Level_01	Level 01
GraphicsData_Level_02	Level 02
GraphicsData_Level_03	Level 03
GraphicsData_Level_04	Level 04
GraphicsData_Level_05	Level 05
GraphicsData_Level_06	Level 06
GraphicsData_Level_07	Level 07
GraphicsData_Level_08	Level 08
GraphicsData_Level_09	Level 09
GraphicsData_Level_10	Level 10

1

Game status buffer entry at DA15

1

Game status buffer entry at DA16

1

Game status buffer entry at DA17

1

Game status buffer entry at DA18

1

Game status buffer entry at DA19

1

Game status buffer entry at DA1A

1

Game status buffer entry at DA1B

1

Game status buffer entry at DA1C

2

Game status buffer entry at DA1D

29

Game status buffer entry at DA1F

4

Game status buffer entry at DD6F

80

Table: Tile Data Offsets

Used by the routine at Draw_Tile.

4

Game status buffer entry at E28E

2

Random Number Seed

1

2

Item Sprite Bank

Will point to either of: Buffer_Image, GraphicsData_Items_01 or GraphicsData_Items_02.

2

Game status buffer entry at E5B0

1

Data: Control Byte

Used by the routines at 58109, Handler_PlayerInput and InputHandler_Common.

Byte	Meaning
0	No input
1	Right
2	Left
4	Down
8	Up
16	Fire

16

Saved Attributes Block For Cursor

Saves the attributes before painting the players cursor, this allows it to more easily be "undrawn".

Used by the routines at Draw_Cursor and Remove_PlayerCursorAttributes.

2

Cursor Attribute Position

2

Cursor Attribute Buffer Pointer

14

Home Arrow Attributes

Used by the routine at Handler_HomeArrow.

12

Home Attributes

Used by the routine at 58986.

12

Cursor Attributes

Used by the routine at Draw_Cursor.

11

Table: Cursor Attribute Positions

Used by the routine at PlayerCursor_AttributesRotator.

2

Temporary Cursor Attribute Byte Pointer

Used by the routine at PlayerCursor_AttributesRotator.

2

Input Control Pointer

Will point to one of:

Control Method	Address
Keyboard	InputHandler_Keyboard
Kempston	InputHandler_Kempston
Cursor	InputHandler_Cursor
Sinclair	InputHandler_Sinclair

1

Selected Menu Item

Populated by the routine at Handler_MainMenu (UpdateMenuSelection).

Byte	Meaning
1	Keyboard
2	Kempston
3	Cursor
4	Sinclair

1

Game status buffer entry at EB39

28

Game status buffer entry at EB3A

114

Game Over Variables