#38390 - Seiru - Sun Mar 27, 2005 1:25 am
Keep in mind, I'm not asking because I want it to. I'm merely curious as to the technical details which keep the PassMe from playing DS ROMs loaded onto a GBA flashcard.
#38391 - darkfader - Sun Mar 27, 2005 1:36 am
Why you want technical details? You want to find a way to do it?
We are so trying to keep you on the straight path.
Last edited by darkfader on Mon Mar 28, 2005 6:59 am; edited 1 time in total
#38393 - Riven.art - Sun Mar 27, 2005 1:54 am
I thought people posted that 2 games and the metriod demo, worked with the passme (natruim42's) in the large topic about it.
If that was true, does it just ban the current games list by the name and future ones will work?
(Like the ds detects what ds game is in the slot)
#38394 - sgeos - Sun Mar 27, 2005 2:08 am
The passme runs code from the gba slot. I'm assuming that commercial games are compiled to run from the ds card slot. The slots are mapped to different memory regions.
-Brendan
#38399 - Seiru - Sun Mar 27, 2005 2:58 am
| darkfader wrote: |
Why you want technical details? You want to find a way to do it?
We are so trying to keep you on the straight path. |
I'm just curious, like I said in my post. Why would homebrew code work, but not commercial code? That's all.
#38401 - darkfader - Sun Mar 27, 2005 3:11 am
The interrupt handler in the ARM7 bios sometimes verifies the cartridge ID with new encryption values. And since the encryption is based on the gamecode, we cannot recreate that. Just wait until encryption is broken and real DS flashcards are selling.
#38403 - sgeos - Sun Mar 27, 2005 3:14 am
| Seiru wrote: |
| darkfader wrote: | Why you want technical details? You want to find a way to do it?
We are so trying to keep you on the straight path. |
I'm just curious, like I said in my post. Why would homebrew code work, but not commercial code? That's all. |
See above. Simply put, that would be too simple. The passthrough is a hardware hack to get code to run on a DS. Think about how you would have to structure a program to get it to run from both the DS card slot and with a passthrough. They are mapped to different address. I don't know much about patching, but I'm sure the orignal game doesn't support the dual support feature.
-Brendan
#38405 - tepples - Sun Mar 27, 2005 3:17 am
Commercial games are compiled to read files from the Nintendo DS slot. They'll need patching to read files from the GBA slot instead. This sort of patching is already commonplace on the GameCube and may eventually become as commonplace as SRAM-patching is on the GBA.
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#38413 - cyclone - Sun Mar 27, 2005 8:22 am
if you're not planning to play with the hardware (writing code for it, etc..)
you don't need a passme; just wait for official ds flashcards
#38425 - geran - Sun Mar 27, 2005 4:37 pm
| darkfader wrote: |
| The interrupt handler in the ARM7 bios sometimes verifies the cartridge ID with new encryption values. And since the encryption is based on the gamecode, we cannot recreate that. Just wait until encryption is broken and real DS flashcards are selling. |
Any progress on breaking that encryption?
#38438 - darkfader - Sun Mar 27, 2005 8:49 pm
nah. I suspended that project temporarily... but I'll pick it up soon.
#38440 - detroit - Sun Mar 27, 2005 8:59 pm
as for technical reason the passme doesn't work with commercial ROMS.... it's because the ROM is loaded into RAM from the GBA cart and there are only 4mb available, which is less than commercial ROM size.
#38482 - Lynx - Mon Mar 28, 2005 10:35 am
| Quote: |
| just wait for official ds flashcards |
Heh.. Like the "official" GBA flashcards? :D
Anyway, PhoenixRising and I are working on a couple of demos that we are hoping to show some ways around what is believed to be current limitations. Don't want to give to much away incase we can't meet expectations.. ;)
#38483 - geran - Mon Mar 28, 2005 11:39 am
| darkfader wrote: |
| nah. I suspended that project temporarily... but I'll pick it up soon. |
What are you working on instead?
#38492 - darkfader - Mon Mar 28, 2005 4:40 pm
Nothing in particular.
#38645 - Issac - Tue Mar 29, 2005 9:56 pm
I think I will wait for real flashcart-ish ds things...
the passme seem to weird for me...
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#38698 - quonic - Wed Mar 30, 2005 3:19 pm
| Issac wrote: |
I think I will wait for real flashcart-ish ds things...
the passme seem to weird for me... |
Correct me if I'm wrong, but I think it has been stated that the passme will not work with Non-PD roms.
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#38849 - sgeos - Fri Apr 01, 2005 11:46 am
I thinks he's just uncomfortable with having to use two pieces of hardware when (I presume) he's used to using just one.
-Brendan