Deathchase: Game status buffer

Address	Length	Description
5B00	256	Selection of trees to copy to the main playing area.
5DC0	1	Enemy bike 1 direction (-1 = left, 0 = centre, 1 = right)
5DC1	1	Enemy bike 2 direction (-1 = left, 0 = centre, 1 = right)
5DC2	1	Number of frames before enemy bike 1 should change direction
5DC3	1	Number of frames before enemy bike 2 should change direction
5DC4	1	Number of units to move enemy bike 1 on next frame (negative for left)
5DC5	1	Number of units to move enemy bike 2 on next frame (negative for left)
5DC6	1	Enemy bike 1 position
5DC7	1	Enemy bike 2 position
5DC8	1	Bit 0 - Enemy bike 1 running, Bit 1 - Enemy bike 2 running
5DC9	1	Control method (0 - keyboard, 1 - kempston)
5DCA	1	X offset for bonus enemy
5DCB	1	Various status flags
5DCC	1	Time (in frames) before a bonus enemy should be drawn
5DCD	2	Address to invalidate / redraw bonus enemy on next frame
5DCF	2	Counter for random number generator
5DD1	1	Current sector (1-8)
5DD2	1	Number of enemy bikes still on screen
5DD3	1	Bit 1 - night patrol
5DD5	1	Distance to next enemy bike frame state (0 - 1E)
5DD6	1	Enemy bike frame to draw (0 - far, 1 - medium, 2 - near, 3 - in range)
5DD7	1	Firing photon bolt (1 - yes, 0 - no)
5DD8	1	x position of photon bolt
5DD9	1	Number of frames of photon bolt left to draw
5DDA	2	Pointer to next screen offset for photon bolt graphic
5DDC	2	Pointer to current photon bolt graphic
5DDE	1	Set bit 0 if the photon bolt hit an enemy
5DDF	1	Handlebar position (-1 = left, 0 = centre, 1 = right)
5DE0	1	Number of frames before shot bike explodes
5DE1	1	Position of exploding bike
5DE2	2	Pointer to character for next exploding bike frame
5DE4	2	Pointer to attribute position for exploding bike frame
5DE6	2	Size of playing area - either $01A0 or $02E0
5DE8	1	Bike is moving (0 - no, 1 - yes)
5DE9	1	The current sector in ASCII format
5DEB	1	Set to 1 to mark as "debug mode" - game code can be saved to tape
5DEC	1	Current speed (0 - fast, 2 - slow)
7BFA	45	Storage for small tree graphic
7C27	122	Storage for tree graphic
7CA1	768	Visible tree positions, in a grid 20 across 24 back to front. Store 00 for no tree, 20 for a small tree, and 40 for a large tree.