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User:Sherkel/RNG Notes: Difference between revisions
This is really just my own curiosity, isn't it?
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>Sherkel (This is really just my own curiosity, isn't it?) |
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Well well well, how the turntables...
== Generation III ==
{| class="wikitable"
|+ Sequential RNG calls
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XD LCG: increment 269EC3, multiplier 343FD
ID in FRLG is 0x04000104 (Timer1 -- https://www.cs.rit.edu/~tjh8300/CowBite/CowBiteSpec.htm#Memory-Mapped%20Hardware%20Registers ); SID is upper 16 of RNG state
FRLG initial seed is Timer1 as well
The timer starts counting when the screen changes to the "Press Start"-Screen.
This is initiated by the first button press or waiting till intro is finished.
Once it started counting, it will do so until the initial seed has been determinated.
A soft reset will have the same effect as if you switch off the GBA.
~ flovv
http://www.coranac.com/tonc/text/timers.htm
Method H determines nature first (to account for Synchronize [https://github.com/Admiral-Fish/RNGReporter/blob/3afa1c6cdb14702b6de842b2766cf9e1b2e767eb/RNGReporter/Objects/FrameGenerator.cs#L3164 and the routine described here]), then conducts a "hunt" for a PID that matches it in the possible ones for the numbered method, then generates the two IV halfwords based on above
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(*) E1695F0A is Timid and is the PID of "otherwise frame" 48
== Generation V ==
Initial seeding:
Time is in (decimal)
00SSMMHH
HH from 00-11 (12-11AM), 52-63 (12-11 PM).
0XDDMMYY date
X=weekday, starting at 0
~ Kaphotics
Kazowar: OFFSETS BLACK (add 0x20 to offset for white)
02216084 = SEED
0221608C = 0x5D588B656C078965
02216094 = 0x0000000000269EC3
SEED = (0x5D588B656C078965 * SEED) + 0x0000000000269EC3;
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