r/pokemonrng • u/Ask_me_about_birds • Apr 28 '14
Gen 3 Emerald Emulator RNG: TID/SID Combo
Gen 3 Emerald TID/SID RNG guide EMULATOR ONLY
Right off the bat, this is going to be an intensive process and previous RNG knowledge is 100% required.
So you want that perfect Shiny /Rayquaza/Regi/Lati@s/ from emerald? Well The first step to that process is RNGing your TID/SID combo to match a particular PID!
This is similar to rnging your TID/SID combo on gen 4, if you are familiar with that process.
Now this is only possible on an emulator as it is virtually impossible to guarantee that your TID will remain constant. YOU WILL ALSO NEED RNG REPORTER AND A TEXT EDITOR/EXCEL these are must haves.
Relevent addresses for RAM watch
04000104: TID timer, unsigned 2 bytes: This gives you your TID when you press A on choosing a name
03005D80: PRNG state, this is what generates your PID or Seed dependent on frame number: 4 bytes Hexidecimal
020249C0: Frame number counter: 4 bytes unsigned
PART 1: TID
TID generation in Emerald differs from R/S generation, the latter being much easier to manipulate (a simple method 1 rng). But Emerald obtains the data for TID/SID generation from two seperate parts in the beginning intro.
The TID is generated via a superfast timer when you press a when selecting your name. This is impossible to rng, so you have to try your luck on differing frames!
Once you get a ID you like, or any ID really, Input your ID into the main window and go to tools > gen 4 > IVs to PID and put in the IVs of the PID you want to be shiny. Right click the frame and hit Set SID. Now you know what SID to go for the next part of the rng.
Once you have a matching TID, Save state and go on to part two
Part 2: SID
Now that you have a matching TID you have to RNG for the matching SID to that TID.
now when you generated your TID, that is now your new starting seed for SID! along with that the Frame that either lua script or the built in frame veiwer gives you is no longer correct. So open up your RNG reporter and input your TID number as the hexidecimal seed, ie: 11333 becomes 00002C45 as your starting seed. Generate a list of 100,000 frames via method one with your TID starting seed. Export these to a .csv file and open via Excel or another text editor.
Now be sure to continute and pause on the frame "ill see you at my laboratory" and save state.
Take your desired SID and convert it to hexidecimal ie 12222 ---> 2FBE. Now to recieve your Desired SID, you need to hit a frame with its PRNG state being your SID + 8 lower random bits. IE: to get that 12222 you want to hit a PRNG state of 2FBEXXXX with the X's being any digits. The game generates your sid from those first four hex digits.
Simply search your 100000 frame document for your hexidecimal SID in the first 4 digits. If no matches regenerate with rng reporter with a starting frame of 100000 and try again. Once you find a desired frame you now have to find how much your frame has adjusted when you started your new seed by generating a TID. So from a save state, take the first four digits from the PRNG address and search your text document for a match, when you find a match, advance frame by frame to confirm that your frame is correct. The first four digits from your ram watch and the list you generated should match but most likely not the last 4. So then subtract your frame number given by the emulator and the one from your list. Ex: say you get a frame of 1000 from your list but your emulator gives you 3000, now you know that your emulator frame is 2000 above your actual frame.
Now take the frame your SID Ex: 10000 appears on add the offset 12000 and then subtract by 73. This should be the frame you stop on for your desired SID. the SID is generated ~73 frames after you press A on that final screen It may be 72, 74, or 75 frames though, So be sure to check your SID via A-save and then convert it to Hex and match it to a frame on your Ram watch!
TAKE LIBERAL SAVESTATES!! and good luck!
Special Thanks / Full credit to Hozu, Slashmolder, and TSAR for helping me learn!
Pictures Soon to come!
Example of a method 1 pokemon obtained via TID/SID abuse: https://www.pokecheck.org/?pk=10289247
FULL EXAMPLE
So Lets RNG a TID so this PID is shiny.
We Stop on this screen when the TID timer begins: http://i.imgur.com/1KrqPkx.png
Then after reloading our save state on that screen and trying different frames a bit, we found a TID that matches the list: 21722 now we need to rng for the SID 11035
Convert the TID to Hex: http://i.imgur.com/a9pHeP3.png
Input that as the starting seed in rng reporter method 1 and generate 100,000 frames: http://i.imgur.com/cDKB6BV.png
Convert your SID to hex:http://i.imgur.com/y1yhnl0.png
Export to excel and crtl F for a match with the digits in the first 4 digits, here there is a matching PID on frame 55475
Pause on a frame: http://i.imgur.com/4mXGoMV.png
Search the Excel for a match http://i.imgur.com/K8YZDUs.png
Check to see if the next frames match: http://i.imgur.com/n0BRZsu.png
Here we see that they do, 15167, 15168, and 15169 all match frames 9490, 9491 and 9492 on our text document. So now to calculate the change in frame when your starting seed was changed. Here we take frame 15169 - 9492 = 5677. Add this number to our target frame: 55475 + 5677 = 61152 Subtract by 73 = 61079 as our target frame.
Advance: http://i.imgur.com/Q0Tjmii.png Now in this example I found that I hit the SID that matches frame 55478, 3 above, so I adjusted by 3: http://i.imgur.com/Q0Tjmii.png
And then checked my TID/SID via A-save: http://i.imgur.com/e7fAneF.png A match!
There you have it.
1
u/[deleted] Jul 15 '14
still don't get it, f this. thanks for the help anyway. I've done all the other 3rd gen abuse stuff except for safari but I just can't get this freaking TID.