Short Circuit

Loading the map from the listing…

Drawn by this page from the listing's bytes: tile numbers, the tiles at $5000, the character set at $D800 and each character's colour from $8448, in the multicolour mode the game uses, with brown and light blue as the two shared colours that the raster handler sets for the playfield. The 40 by 12 characters on screen at any moment are 10 tile columns; test_levels.js finds the first frame's screen inside this strip, character for character. The three rows are scenery: an object lies in a column of the middle row, and a locked drawer or cabinet is one of the eight columns at $15BC.

One row for each event number and one dot for each column that starts it. The routine behind each number allocates a sprite at the left or right edge of the screen ($3663) and gives it a colour. Nobody has yet looked at what the sprites draw.

Event	Columns	Starter routine	Enters from
1	20	$2DC2	left
2	11	$2E7A	right
3	10	$3470	right
4	6	$2E19	right
5	2	$33AC	left
6	1	$2F80	right
7	8	$2ED4	right
8	4	$31C1	left
9	4	$30C8	left
11	17	$33D1	right
12	4	$34CA	left
13	5	$3523	left
14	3	$357C	right
15	5	$35A1	right