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Acmlm's Board - I3 Archive - - Posts by MathOnNapkins
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MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-19-06 08:28 AM, in Caption contest. (New picture!!11) Link
MON sez: hi! my first hack go here It's a me Mario!
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-19-06 08:29 AM, in Halving graphics VB6 Link
no, it's an old thread with a resolved problem. He was basically having to do some swapping of 8x8 tiles while dealing with TSA and what not.
MathOnNapkins

1100

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Since: 11-18-05

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Posted on 05-19-06 08:34 AM, in ASM hacks / Custom Blocks / Custom Sprites Requests Link
Remoga Sanctum: You need to do more research on your own and quit asking lame questions. I am not staff, but I can clearly see a ban in your future if you don't 1. improve your spelling and grammar, 2. stop asking questions about things that are currently above your head.
MathOnNapkins

1100

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Since: 11-18-05

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Posted on 05-19-06 08:37 AM, in Twighlight Princess: Wii, or Gamecube? Link
How about the fact that I preordered a game for one system that was supposedly being released in April, yet it's coming out later and on another system and I'm not guaranteed "full content" with my version? How is that supposed to not piss me off?
MathOnNapkins

1100

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Since: 11-18-05

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Posted on 05-19-06 08:58 AM, in WAV to BRR converter? Link
You could probably make one if you had the proper documentation. I've read up on it, it doesn't seem that hard. Might take a few tries to get it right of course.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

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Posted on 05-19-06 09:44 AM, in ASM hacks / Custom Blocks / Custom Sprites Requests Link
Originally posted by Remoga Sanctum
I cant see why I would need your help anyways.


And you wouldn't get my help either b/c I have no reason to help people like you.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

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Posted on 05-19-06 10:07 AM, in Calculating checksum... need help Link
the mod 2^32 checksum I was referring to is the checksum for the actual ROM, not the SRAM. You know, when you start up your emulator and it says "checksum: ok" or "checksum: failed" or any other notification of that sort. That was a checksum that Nintendo decided developers had to use when creating binary images of their games. Hence Nintendo decided the implementation.

In any case, the point is... I just downloaded Lufia 1 and am too tired to mess with this today. will edit later when I wake up.

From looking at the machine code, it appears the checksum formula is thus: the value $6502 + each word, starting from address $0008 in the save slot, ending at address $07FF in the save slot. I would check this myself but I cannot find my TI-83, and don't have a convenient way of checking this otherwise at this time.

edit: considering the old NES processor was the 6502, I am not surprised at all. Btw, using the windows calculator, ($E5E5 * $3FC)+ $6502 = $616E. Shocking isn't it?

(edited by MathOnNapkins on 05-19-06 09:31 AM)
(edited by MathOnNapkins on 05-19-06 09:36 AM)
(edited by MathOnNapkins on 05-19-06 09:37 AM)
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-19-06 10:43 AM, in The Da Vinci Code Movie Link
Originally posted by Hhllrssstttxaaeioy
So... The reviews are out, and almost everyone hates it.


You know, when I'm logged out and view your posts, I always ****ing confuse them with Ziff's. You need to... stop doing that to me or something.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-20-06 01:52 AM, in Calculating checksum... need help Link
Originally posted by FloBo
Lol... 6502... they're funny, those people from Taito, aren't they? And you got that Info out of the asm of the rom? Damn... I really need to learn 65816 soon... How did you do that? Did you use Gaigers Snes9x debugger?


Yes, I used Geiger's Debugger. I set a breakpoint on writes to $700806 then went to a shrine to "record" my game into save slot 2. I found out where it was being written in the code when the debugger snapped. I then figured out what routines were being called to calculate this checksum prior to recording it in SRAM by setting some strategic execution breakpoints (not read/write breakpoints).

The funny thing is that of all the time I spent figuring this out, most of it was spent fighting the Sinistrals in the intro so I could get to a point where I could save . About 90% of the time really. The 65816 required to understand this is minimal really. Experience certainly helps too.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-20-06 07:00 AM, in Caption contest. (New picture!!11) Link
"Mario is back his largest adventure yet! Get ready for Super Mario Bros. 3! Actual gameplay may vary. ©Nintendo 1990,1991"

(edited by MathOnNapkins on 05-20-06 06:00 AM)
(edited by MathOnNapkins on 05-20-06 06:01 AM)
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

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Posted on 05-20-06 07:23 AM, in SNES HiROM Memory Mapping questions Link
Well I don't know specifically all the details, but considering emulators work (more or less), you should try experimenting with a rom and viewing it in a debugger to see what gets mapped to what.

1) What are you even talking about? Lo-Rom is mode 20, Hi-Rom is mode 21. You can't mix them. Besides, the memory map is the same. Your question makes no sense.

2) Can't help you with WLADX. Can't you just declare what bank you want the code to go in in WLADX?

3) I would assume RESERVED means inaccessible to the programmer unless otherwise mapped in (Super FX or other chips, Xband, specially wired Static RAM, etc)

4) PPU2, yes I've heard of it, what's your point?

Also, this question is largely irrelevant to this forum. Why don't you post your SNES related questions in the romhacking forum, as they are more likely to get answers there? You're probably just bothering the forumgoers here.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-21-06 01:24 AM, in SNES HiROM Memory Mapping questions Link
If you use DMA you have to use PPU2. You know, the $42XX registers that set up the transfers? The difference between PPU2 and PPU1 (as I recall) is that they have different bus widths and are possibly connected to different buses (A bus vs. B bus) of the main processor. I'd have to dig through the official documentation to know for sure. All in all, I just call both of them the "PPU", though for some applications you have to consider them separately.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-21-06 01:33 AM, in Nostalgia Link
Originally posted by Yoshi Dude
Who can name them all?


Not all, but probably 60 - 70%. :/

I need to recreate the giant though. That was fun.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

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Posted on 05-21-06 02:25 AM, in Nostalgia Link
Fyxe's:

Waddler D, Surlent, Ailure, NSNick, The SomerZ, Xk, ???, ???, Colin, Blades, ???, Acmlm, Tomguy, Cymoro, Sofie, Jizuko, Skiffles?, Knuck, YD, Zem, ???, ???
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-21-06 02:35 AM, in SNES HiROM Memory Mapping questions Link
Pretty sure you can use 16 bit registers on either PPU, but what I meant was what addresses in memory each PPU had access to. i.e. 24 bit addressing versus 8-bit addressing.
MathOnNapkins

1100

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Since: 11-18-05

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Posted on 05-21-06 03:16 AM, in board2 ?? Link
Board2 has a nice fresh look to it. I hope it eventually is used in some capacity.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

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Posted on 05-21-06 03:35 AM, in Interested in .SPC altering within a ROM Link
There are already assemblers and disassemblers for SPC-700. Byuu's come to mind, though I have to tell him about a bug in his disassembler...

For 3 byte branch commands it doesn't properly calculate the target addresses.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-21-06 04:25 AM, in Nostalgia Link
Originally posted by Colin
The Acmlm one is easier than the Fyxe one, which would require some guesswork.


I'm actually having a harder time of that one... assuming everything of note is a person from the board. In addition to those mentioned, I see Kiwibonga and Danicess. Other than those who are obvious, I'm stumped.
MathOnNapkins

1100

In SPC700 HELL


 





Since: 11-18-05

Last post: 6295 days
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Posted on 05-21-06 04:38 AM, in WTF is going on with Alastor's user name? Link
The point bio is making is that if you were to omit the X while reading it, while using the formula Alastor described for creating said username, it would still be "Bio". How hard is that to understand?
MathOnNapkins

1100

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Since: 11-18-05

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Posted on 05-21-06 04:40 AM, in Stupidest thing someone's asked you/said to you? Link
Originally posted by Cornellius
In a restaurent :

(Waitress) So, was it good ?
(Me) No, sorry...
(Waitress) No problem. Do you want to bring it home ?
(Me) ...


Sometimes people are tired and aren't really paying attention to what you're really saying. I find that waiters and waitresses are among the most tired people I meet. You shouldn't really blame them, they're trying to do their job.
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Acmlm's Board - I3 Archive - - Posts by MathOnNapkins


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