Zelda 2 overworld information

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"Browse Around" information
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locations of towns and caves and such:
base addresses

This is copied to SRAM area 6A00-6AFB

0x462F  west hyrule
0x611C  death mtn
0x862F  east hyrule
0xA10C  maze island

Base address is for "Y"
Add 3F to get "X"
Add 7E to get "Z"
Add BD to get "W"

"Y":
.xxxxxxx - Y position plus 1E (30).  Subtract 30 to decode, add 30 to encode
x....... - "External" bit, this makes it a warp to overworld, town, or palace

"X":
..xxxxxx - X position
.x...... - Is second part of a cave
x....... - ?

"Z":
..xxxxxx - Map number
xx...... - Horizontal position to enter within map  (ignored for two-exit locations)
	00 = enter at middle of first screen
	01 = enter at middle of second screen
	10 = enter at middle of third screen
	11 = enter at middle of fourth screen

"W":
x....... - Fall into a pit when entering
.x...... - "two-exit", like a bridge.  Must go through level to cross this tile.
..x..... - Enter at right side instead of middle
...000xx - (requires External) Warp to same numbered exit in overworld #xx
...xxx.. - (requires External) Warp to overworld, town, town2, palace, palace2, great palace

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Rock pointers
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0x479F - lv 1
0x47A1 - lv 2
0x47A3 - lv 3
0x47A5 - lv 4?
0x1879F - lv 5
0x187A1 - lv 6
0x187A5 - lv 4