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May 19, 2024, 01:07:01 pm

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Use of ePSXe before 2.0 is highly discouraged. Mednafen, RetroArch, and Duckstation are recommended for playing/testing, pSX is recommended for debugging.

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Messages - Zenn

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PSX FFT Hacking / Re: ASM Requests
August 14, 2019, 11:33:33 am
Quote from: Zantetsuken on August 14, 2019, 10:24:34 am
Can someone make an ASM hack to change concentrate to just reduce target evasion by half or nullify class evasion?

I found one posted by Rfh long ago, but it does not seem to work.

Try this one (not tested):
Code Select
  <Patch name="Concentrate div by 2 all evades instead of null them - ASM version">
    <Description>Concentrate divides by 2 all target evade types instead of nulling them.</Description>
    <Location file="BATTLE_BIN" offset="1852E4" mode="ASM" offsetMode="RAM">
      lui a0,0x8019
      lw v0,0x2d94(a0) #Load Attacker Data Pointer
      ori a1,zero,0x0004 #All four evades.
      lbu v0,0x0090(v0) #Load Attacker's 2nd set of Support
      addu a0,a0,a1
      andi v0,v0,0x0001
      beq v0,zero,EXIT #Branch if Attacker Doesn't have Concentrate
LOOP: addiu a0,a0,0xffff
      lbu v1,0x38de(a0)
      addiu a1,a1,0xffff
      srl v1,v1,0x01 #Amount to shift 1 equals div2, 2 equals div4
      bgtz a1,LOOP
      sb v1,0x38de(a0)
EXIT: jr ra
      nop
      nop
      nop
    </Location>
  </Patch>
  <Patch name="Concentrate div by 2 all evades instead of null them - HEX version">
    <Description>Concentrate divides by 2 all target evade types instead of nulling them.</Description>
    <Location file="BATTLE_BIN" offset="11E2E4">
      1980043C
      942D828C
      04000534
      90004290
      21208500
      01004230
      06004010
      FFFF8424
      DE388390
      FFFFA524
      42180300
      FBFFA01C
      DE3883A0
      0800E003
      00000000
      00000000
      00000000
    </Location>
  </Patch>
2
Help! / Re: Excising FMV to Save Space (PSX Version)
July 25, 2019, 05:57:07 pm
No.

PSX space issues are not related with the size of the image (700mb) but rather the small amount of RAM the console has (2mb, developer console has 8mb).
3
PSX FFT Hacking / Re: Dithering OFF
July 15, 2019, 03:49:05 pm
That depends on what "Dithering OFF" means...

1) If you are referring to an emulator option, then no. Emulators only read game images (otherwise is a bugged emu).

2) If you are referring to a dither removal process like this one: https://www.chrismcovell.com/psxdither.html, then yes. The image can be corrupted if you don't fix the headers of the sectors that contain those modified gpu instructions. But as far as i recall PCSX-ReARMed doesn't freeze nor crash with header's errors like Mednafen.

3) If you are referring to another thing, then I don't know.
4
PSX FFT Hacking / Re: Get Jp Up
July 15, 2019, 10:37:58 am
Yes there are (only for PSX). I can think of this one (made by xjamxx and uploaded on github):
Code Select
  <Patch name="JP Gain">
    <Description>Base JP Gain is 10 instead of 8 and job level goes by 4 instead of 2. Now you can gain up to 99 JP. Gained JP Up goes to spillover too.</Description>
    <Location file="BATTLE_BIN" offset="17E934" mode="ASM" offsetMode="RAM">
      sll v0,s7,0x02
      srl v1,s1,0x02
      addiu v1,v1,0x000a
      lbu a0,0x0090(s2) #Load Second Set of Supports
      addu s1,v0,v1
      andi v0,a0,0x0040
      beq v0,zero,JGS1 #Branch if Unit doesn't have Gained  JP Up
      sll v0,s1,0x01
      addu v0,v0,s1
      srl v1,v0,0x1f
      addu v0,v0,v1
      sra s1,v0,0x01
JGS1: lbu a0,0x0000(s0)
      nop
      bne a0,zero,JGS2
      nop
      addu s1,zero,zero
JGS2: lbu v0,0x0005(s2) #Load Unit's Team
      addu s0,zero,zero
      andi s3,v0,0x0030
JGLP: beq s0,s5,JGS4
      nop
      bgez s1,JGS3
      addu a1,s1,zero
      addiu a1,s1,0x0003
JGS3: addu a0,s0,zero
      sra a1,a1,0x02 #Gained JP / 4
      lw a3,0x0010(sp)
      jal 0x0017ea80 #Store JP; Calculate Unlocked Jobs
      andi a2,s3,0x00ff
JGS4: addiu s0,s0,0x0001
      slti v0,s0,0x0015
      bne v0,zero,JGLP
      nop
      addu a0,s5,zero
    </Location>
</Patch>

But if you only want to change the amount Get Jp UP gives:
Code Select
  <Patch name="GET JP UP Gain">
    <Description>Gained JP Up mod by 2.</Description>
    <Location file="BATTLE_BIN" offset="17E9AC" mode="ASM" offsetMode="RAM">
      ori v0,zero,0x0002 #Times JP Up multiplies base JP gain
      multu s1,v0
      mflo s1
      nop
      nop
    </Location>
</Patch>
5
PSX FFT Hacking / Re: (Rfh Asm) Need help for formula edit
July 09, 2019, 09:03:56 am
You shouldn't give up so easily...

Apply this patch after Rfh jump patch:
Code Select

  <Patch name="Add variable to Rfh jump patch">
    <Description>Changes the Y parameter to a Y variable. Default value 63h=99d.</Description>
    <Variable name="Y" file="BATTLE_BIN" default="63" offset="F702C"/>
    <Location file="BATTLE_BIN" offset="F702D">
        000334
      00000000
    </Location>
  </Patch>


QuoteI'm not good creating ASM ...

Then you should start reading ASM tutorials and start practicing. You won't find much help on ASM, besides those tutorials and the wiki.
6
PSX FFT Hacking / Re: Monster Job Wheel (MJW)
July 08, 2019, 08:37:13 am
Quote from: Hyppocritamus on July 04, 2019, 10:01:09 pm
is there a way to make the wheel...smaller?

Lets say I want to be able to change between Chocobo, Black Chocobo and Red Chocobo, but don't want them to be able to change into a Mindflare.  Can I have each soecies only be able to change into monsters that share a sprite, and just, well, pallete/class swap as needed?


Have you tried using the "MJW - No class change" patch? I think it does what you are asking.
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