I think a lot of it is learning how to abuse AI glitches. Like being able to spam spin kick with Ryu and beat Deejay for free, or constantly doing jb.roundhouse to beat Zangief.
The first point was an error. I’ve had a weird problem lately where I tend to combine or omit certain words together and type out weird sentences. It’s annoying.
Sux being robot 
-ud
Here is my to do list in priority. And they’re not on the same level either.
High (Won’t be another release until fixed one of these is fixed)
KO Slow Down Removed(On everything)
Fix Throws to behave properly at low health (No standing)
Med
Player 2 character is the stage*
Low
Select AI*
Any Debug features(If I find them, might have to remove sprites either background to prevent flickering and more slowdown)*
Really Low
Remove timer graphics
Allows Supers to be done any time
Add Free Play on non-phoenixed sets
I love you jed.
Freeplay only on US board.
Also thanks jed, doing great work.
Slow down fix would make it very usable for training!
Thanks for the Amazing hack
If anyone is interested, I’ve published the first post of a series that will explain how to debug the Super Street Fighter II Turbo ROM in MAME. The first post explains how to create a “change difficulty” cheat: http://pof.eslack.org/2014/03/25/hacking-super-street-fighter-ii-turbo-part-1/
Nice, You could of looked at or talked about the memory map of the cps2 to help decide what needed to be changed instead of guessing.
0x000000 - 0x3FFFFF Main Program
0x400000 - 0x40000A - Encryption(aka the battery memory on pheonixed roms it's 0xFFFFF0 - 0xFFFFFA)
0x618000 - 0x619FFF Shared ram for the Z80 aka tells what sfx or music to play.
0x660000 - 0x663FFF Network Memory
0x900000 Start of Graphic memory can change with each game.
ST
0x900000 - 0x903FFF Palette
0x904000 - 0x907FFF 16x16
0x908000 - 0x90BFFF 32x32
0x90C000 - 0x90FFFF 8x8
0x910000 - 0x913FFF 16x16 mainly hud and character names on select screen
0xFF0000 - 0xFFFFFF - Main Memory
Thanks jedpossum, I updated the post and added your information. Btw, I’ve published part two here: http://pof.eslack.org/2014/04/08/hacking-super-street-fighter-ii-turbo-part-2/ it explains some very basic concepts of m68k assembly needed to do ROM patching, and includes a couple of new MAME cheats. Hopefully someone will find it useful 
Again, I appreciate any comments 
Playing as CPU in GGPO might be fun. You pick Guile, people spectate and wonder how the fuck you walk up Boom or Flash Kick. But, I suppose, people would need the hacked ROM to see matches.
You don’t have to do a rom hack it’s a simple flag in the memory.
Got bored and decided to do some projectile hacking.
For St I’ve only started found the projectile speed table.
Every one uses the same table and just reads at different places.
Start 0x2F8800
XSPP YS## XSPN YS##
Would it be possible to edit ST to allow characters to move before and after the round? That’s my favorite feature in some CE hacks
awesome hack jedpossum, n ken needs that fb buff!
Well the table is shared with most characters I haven’t tested all the characters even old characters.
So, if I edit speed 300 and 400 it would apply to both N.Ryu’s and N.Ken’s Light and Medium Fireball speed.
Fireballs work differently in this engine compared to alpha engine. In the alpha engine each projectile was separately programmed with it’s own table in the later games that even change how it moves. Like Lilith’s Soul Spark has amount of hits, X speed, and a timer. While Lei lei’s item projectile is just four jump parabolas. And Anak’s curse only has x speed and y speed.
You know, you could of easily asked for the addresses instead of comparing the roms.
My notes for the hack
--------------------------------
--Rom3----Rom3----Rom3----Rom3--
--------------------------------
-------------
----Timer----
-------------
Mid Match
Adr - FE8E
Hex - 1B40 0DD0
Character Select
Adr - ECDA
Hex - 637C
-------------
----Super----
-------------
Doesn't drain
Adr - 27FA8
Hex - 422E 02C4
----------
--Throws--
----------
Addresses
4A76
4DAE
Hex
377C 0090
Throw 1
Ko Slow Down
Adr - 4A96
Hex - 4EB9 0007F2B2
-------------
---Throw 3---
-------------
Adr - 49C2
Hex - 377C 0090
Remove KO knock down
Adr - 49E6
Hex - 177C 0002
-------------
----Music----
-------------
Character Select
Adr - E2FC | ECBE | ECCA
Hex - 303C 0034
--------------------------------
--Rom4----Rom4----Rom4----Rom4--
--------------------------------
-----------
Projectiles
-----------
Adr - BEBAC (3EBAC)
Hex - 357C 0090
Ko Slow Down
Adr -
Hex -
------------
Regular Hits
------------
Life Refill
ADR - BE64C (3E64C)
Hex - 357C 0090
Ko Slow Down
------------
Random Notes
------------
P1 -- p2 + 400
ADR = FF844E
LIFE = ADR + 2A
How long push box is gone after a throw
4E30
Original ASM
move.b #$1C,($DE0, A5)
Binary
1B7C 001C 0DE0
Vampire Savior Stage Selection
A5 = 0xFF8000 -- Settings,various timers you know global data.
0x020704
jsr $ae7c.l
lea ($400,A5), A0 --Loading p1 slot
lea ($800,A5), A1 --Loading p2 slot
--If versus
tst.b ($131,A5)
bne $aea8
lea ($15be,PC), A2; ($c468) --Stage table pointer being loaded
jsr $14e8a.l -- This sub routine is everywhere but here it aids in the randomization of stages.
move.w ($d4,A5), D0
move.w D0, D1
add.w D0, D0
add.w D1, D0
lsr.w #8, D0
add.b D0, ($d5,A5)
move.b D0, ($d4,A5)
move.b ($d5,A5), D0
rts
andi.w #$f, D0
moveq #$0, D1
move.b ($382,A1), D1
lsl.w #4, D1
add.w D0, D1
move.b (A2,D1.w), D0 --Stage has been selected
move.w D0, ($100,A5) --and now part of the main memory
I know this isn’t ST, but some one could potentially add a weighted randomization to stages. It needs some reworking as stage values in Vsav are always even. Also, finding a nice place in the code to add this routine.
I haven’t been following this thread so i don’t know if anyone has gone over this yet and if so im sorry but im wondering how hard it would be to normalize the speed of all the stages and if so to release a rom with only that change ?
Edit: Actually as an addition to that if such a change were to be made what would be considered the baseline stage that all the others would be changed to follow ?
As a way to normalize speed would be getting rid of the sprites in the background like I did in Birdie’s A2 stage a long time ago.
A true base line would be absolutely nothing no bg layers, no bg sprites, no raster effects, no palettes, even getting rid of the slowdown mechanic from fireballs on the stage were the cpu is just processing the characters and maybe the hud.