$01/81EC A2 00 42 LDX #$4200 A:0061 X:007F Y:0007 D:0100 DB:7E S:02E1 P:envmxdIzCHC:0238 VC:115 00 FL:00 $01/81EF DA PHX A:0061 X:4200 Y:0007 D:0100 DB:7E S:02E1 P:envmxdIzCHC:0262 VC:115 00 FL:00 $01/81F0 2B PLD A:0061 X:4200 Y:0007 D:0100 DB:7E S:02DF P:envmxdIzCHC:0292 VC:115 00 FL:00 This is changing the Direct Page register to look at xx/4200. You might already see where this is going, but for those that don't... It gets funky.
$01/81F1 85 04 STA $04 [$00:4204] A:0061 X:4200 Y:0007 D:4200 DB:7E S:02E1 P:envmxdIzCHC:0328 VC:115 00 FL:00 $01/81F3 E2 20 SEP #$20 A:0061 X:4200 Y:0007 D:4200 DB:7E S:02E1 P:envmxdIzCHC:0356 VC:115 00 FL:00 $01/81F5 A9 64 LDA #$64 A:0061 X:4200 Y:0007 D:4200 DB:7E S:02E1 P:envMxdIzCHC:0378 VC:115 00 FL:00 $01/81F7 85 06 STA $06 [$00:4206] A:0064 X:4200 Y:0007 D:4200 DB:7E S:02E1 P:envMxdIzCHC:0394 VC:115 00 FL:00 This, believe it or not, is storing to the hardware registers to do math, in this case I think division. I don't know if it's 97 divided by 100 or 100 divided by 97. In any event, the game is changing the DP register to do math. Completely unnecessary. :sad: Now I know why JCE thinks this game is a coding disaster. It is a coding disaster. :bah:
Let the fun continue...
Title: Re: FF4 code griping thread
Post by: JCE3000GT on December 08, 2007, 02:33:50 AM
Well put...
Title: Re: FF4 code griping thread
Post by: Lenophis on December 08, 2007, 02:56:51 AM
Ok, I found something that looks like it's drawing the item screen:
$01/9064 7A PLY A:FF04 X:0012 Y:0056 D:0100 DB:7E S:02E7 P:envMxdIZCHC:0498 VC:018 00 FL:08 $01/9065 60 RTS A:FF04 X:0012 Y:0044 D:0100 DB:7E S:02E9 P:envMxdIzCHC:0534 VC:018 00 FL:08 Those three ASL's and the subsequent ADC is the multiplying. ASL x 3 is the same as multiplying by 8, and adding itself seems to be the 9. That holds true in this case, since the item ID number is 1.
$01/902B 0A ASL A A:0001 X:1440 Y:0044 D:0100 DB:7E S:02E5 P:envmxdIzcHC:0332 VC:013 00 FL:08 $01/902C 0A ASL A A:0002 X:1440 Y:0044 D:0100 DB:7E S:02E5 P:envmxdIzcHC:0346 VC:013 00 FL:08 $01/902D 0A ASL A A:0004 X:1440 Y:0044 D:0100 DB:7E S:02E5 P:envmxdIzcHC:0360 VC:013 00 FL:08 $01/902E 65 43 ADC $43 [$00:0143] A:0008 X:1440 Y:0044 D:0100 DB:7E S:02E5 P:envmxdIzcHC:0374 VC:013 In case it wasn't clear, that's your multiplier. That only gives you 5 bytes to work with, it's probably not going to be easily expanded on here.
If you're wondering where this is in the actual file, it's at 0x901D (add 0x200 if you have a header).
Title: Re: FF4 code griping thread
Post by: JCE3000GT on December 08, 2007, 03:14:02 AM
01/902B:2060DE JSR $DE60 (this used to be the three ASL's) 01/902E:EA NOP 01/902F:EA NOP (this was the ADC)
01/DE60:E220 SEP #$20 01/DE62:8F024200STA $004202 (store item index) 01/DE66:A90A LDA #$0A (our multiplier, this makes items 10 characters, 9 + icon) 01/DE68:8F034200STA $004203 (store the multiplier) 01/DE6C:EA NOP 01/DE6D:EA NOP 01/DE6E:EA NOP 01/DE6F:EA NOP 01/DE70:C220 REP #$20 01/DE6E:AF164200LDA $004216 (A now contains our current item index) 01/DE73:60 RTS The location for the math routine is at 0xDE60 (add 0x200 if your file has a header). It was the only place within JSR range, though I had room for a JSL.
One thing to note, with this new system, the current location of the item names are no longer valid. They'll need to be moved elsewhere. Expanding is a possibility, just make sure you know where to put them. This won't do much for battles, although a thought occurs. You can do what we did with items, make 2 lists. A 13 letter list and a 16 letter list. The 13 letter list is used for places that obviously can't fit the 16 letter list. The only thing you'd need to do is know when a specific list can be used.
Also, this is untested, though I'm fairly confident that new routine is within range to be JSR'ed to.
Lastly, if you want to expand the names farther, just change the multiplier (LDA #$0A).
$01/9045 A9 08 LDA #$08 A:0004 X:000A Y:0046 D:0100 DB:7E S:02E7 P:envMxdIzcHC:0776 VC:013 00 FL:08 $01/9047 85 45 STA $45 [$00:0145] A:0008 X:000A Y:0046 D:0100 DB:7E S:02E7 P:envMxdIzcHC:0792 VC:013 00 FL:08That LDA needs to be changed to 1 less than what your new multiplier is. That value is when the game knows to stop drawing letters.
Title: Re: FF4 code griping thread
Post by: JCE3000GT on December 08, 2007, 02:13:14 PM
Cool. I'll play around with it later. :cookie:
Title: Re: FF4 code griping thread
Post by: JCE3000GT on December 12, 2007, 04:42:25 PM
Title: Re: FF4 code griping thread
Post by: HHIPDragonFox on June 26, 2008, 04:31:31 AM
Hey Lenophis:
Would the Multiplier and index for the main menu items work with the following: (o) 1) Event Get Treasure (o) 2) Event Give Treasure (*) 3) Main Menu Spell Menu/List (*) 4) Main Menu class/name (*?) 5) Main Menu player name (o) = not done, (*) = has been done, (?) = in questionable status, why did I want this.
I just can't figure out where to poke the values or address reroute (JSR) Your previous asm worked for the item/shop/battle won menus.
thanks..
:omg: 3) in headered offset format + explanation+base/changes. it does work
0B4F2 = Magic Menu, Spell List, Spell Generate Index holder. Original = 0A (85 45) 0A (65 45) Changed = (85 45) 20 ## ## (EA) where ## ## is the offset pointer of the rom for the index holder.
Picture: (http://www.geocities.com/holyplasmadragonfox/FF2US-rv_ed_SpellItems.JPG) Still have to rearrange the columns for the spells. yes the last part of the picture does include a couple of enemy spells.
Editted: (4) The following Code is in headered format with starting areas and changed areas.
091D2 = E2 20 68 85 46 0A 85 45 0A 65 45 65 46 85 45 64 46 A6 45 A9 07 85 45 BF 64 A7 0F 091D2 = E2 20 68 85 46 C2 20 20 60 DF EA E2 20 85 45 64 46 A6 45 A9 08 85 45 BF 64 A7 0F ## ## address pointer to index sub-routine. I figured that copying some routine command from the Spell Find/Print every # generate function and make similar to the Class functions and it seemed to work well so far. I can variate most code given when basically given. now as to what this really does in asm is unknown to me yet. so feel free to verify this and contact me.
(http://www.geocities.com/holyplasmadragonfox/FF2US-rv_ed_NewClassLength.PNG) It seems to work and I haven't yet come accross any alterations in the program functionalities. Just need to find that variable procedure that moderates how the class title disappears when status conditions are on.
(5) Strange, I can set the pointer to generate every number but it seems the program views this differently somehow. I can change the name and length to show as well, but it still shows the orignal name for that area. Slightly works, but found to be pointless as for the game memory will only store 6 letters when renamed. Also found that the pointer (BD) 00 15 E8 refers to some part of the rom in which I haven't deciphered yet. Help is welcomed.
085B8 = MainMenu, CHaracter Name, Generate Every # original code. 0A 85 45 0A 65 45 20 B4 87 085B8 = MainMenu, CHaracter Name, Generate Every # change code. 85 45 20 40 DF EA 20 B4 87 ## ## pointer reference for index generate. 7A710(7A910) is just the reference viewing for what the rom does, changing this areadoes not reflect the names. It's hard coded elsewhere that I haven't found yet.
Title: Re: FF4 code griping thread
Post by: HHIPDragonFox on January 28, 2009, 01:45:16 PM
:blush: Hey Lenophis.
Could you Help me with finding how to expand the length of search chr$ for viewing Item names in the Map Events - Give Item & Treasure Get?
Value needed is expanding the normal 9 letter long name to 0B(11) letter long. The issue is that it show from a search of every 9 and i need it every 11. I have it to show a length of letters at 11 but it's the wrong item name. Here's the Raw Data from Headered Rom(FF2us_v1.1):