#9661 - tepples - Tue Aug 12, 2003 7:52 pm
Is there any way of reading the data on a Game Boy Camera from a GBA program?
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#13536 - macrojon - Tue Dec 16, 2003 6:44 am
Can we just modify a dmg communication cable,
in order to convert the dmg signal level to that of agb's?
| Quote: |
quotes from http://www.work.de/nocash/gbatek.htm
SIO Normal Mode
This mode is used to communicate between two units.
Transfer rates of 256KBit/s or 2MBit/s can be selected, however, the fast 2MBit/s is intended ONLY for special hardware expansions that are DIRECTLY connected to the GBA link port (ie. without a cable being located between the GBA and expansion hardware). In normal cases, always use 256KBit/s transfer rate which provides stable results.
Transfer lengths of 8bit or 32bit may be used, the 8bit mode is the same as for older DMG/CGB gameboys, however, the voltages for "GBA cartridges in GBAs" are different as for "GMG/CGB cartridges in DMG/CGB/GBAs", ie. it is not possible to communicate between DMG/CGB games and GBA games.
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#13541 - ampz - Tue Dec 16, 2003 11:47 am
I'am not so sure the different voltages are a problem... The GBA should be 5V tolerant...
#13592 - haduken - Wed Dec 17, 2003 10:16 pm
You'r going to have to do some hardware hacking any way you do it. The GameBoy camera has a ROM inside, so your GBA is naturally going to boot from that. So you're either going to have to actually REMOVE the camera from the gbcamera cart and wire it into a GBA cart of your making, or switch the gbcamera ROM with your own. Out of those solutions, only the first one will be a *REAL* GBA cart.
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#13610 - macrojon - Thu Dec 18, 2003 7:36 am
| ampz wrote: |
| I'am not so sure the different voltages are a problem... The GBA should be 5V tolerant... |
The protocol that gb camera uses to communicate with gb printer seems not very difficult.
Some details about it can be found in google.
then to write a program to emulator the gb printer on gba.
We can use one GBA (let the emulator program runing on it) and one GB(with the gb camera plugged into it),
then let them communicate with each other.
when communicating,the signal level is a problem.
Maybe we can try with some resistor between the SO pin of the gb and the gba.
#14205 - GameBoi - Fri Jan 02, 2004 1:04 am
If it is a Camera for GBA that you want, check this out!
With the GBA Mini Camera you can transform your Gameboy Advance handheld into a digital camera. The 8MB built-in flash memory allows you to store up to 26 pictures (with resolution 640x480 pixel), which can be reviewed and later downloaded to your PC via the included USB cable.
Product Features
Built-in 8MB memory capacity
Save up to 26 photographs
640x480 pixel resolution
Adjustable contrast
Picture review function (delete and view photos taken)
Download pictures to your PC via USB cable
What's in the box
GBA Mini Camera
USB cable
Software
http://www.gameboy-advance.net/accessories/gba_photo_camera.htm
#14207 - tepples - Fri Jan 02, 2004 1:37 am
I'm not trying to interoperate with photons, which is what the GBA Mini Camera does. I'm trying to interoperate with the legacy camera, to be able eventually to copy photos that are already on somebody else's Game Boy Camera to a PC through a multiboot cable.
Are you suggesting that I display the images on a Game Boy Camera and then take a picture of my Game Boy with a GBA Mini Camera?
Or is this Offtopic and should I try a GB dev forum instead?
_________________
-- Where is he?
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-- I think he moved to Tilwick.
#14209 - GameBoi - Fri Jan 02, 2004 2:50 am
icic ok, I understand what your trying to do now.
hmm...well if you can print the pictures to the Gameboy Printer, then I would start looking at it from that angle....like how the printer calls the files from the cam and sends them over the cable to the printer.
I think I am sugesting kinda something like how a PC can print to a file instead of a printer.
I guess what I am babling about is there a way to intercept the print data and save to pc or?
hmm.I'm new at this and have lots of crazy Ideas some of wich have worked :) so if this sounds crazy plz forgive me.
well you could always just use some old GBC Equipment to copy it to PC.
anyways I'm just a Newbie so what do I know lol, Good Luck!
#14212 - sgeos - Fri Jan 02, 2004 7:11 am
How are the pictures stored? Can't the SRAM (or equivalent) be dumped using the GB equivalent of a flash linker and decoded on your PC? I often dump my GBA saves to play them on an emulator.
-Brendan
#14339 - macrojon - Mon Jan 05, 2004 5:59 pm
| sgeos wrote: |
How are the pictures stored? Can't the SRAM (or equivalent) be dumped using the GB equivalent of a flash linker and decoded on your PC? I often dump my GBA saves to play them on an emulator.
-Brendan |
they do be stored in sram.
i think you may dump the gba game save with a multi-boot link cable or something like that. it takes the advantage of the nintendo multi-boot patent.
but when a gb game cart being inserted,the multiboot feature is not available. you can't dump gb save in that way.
or you have some extra device that can do dump work for you?
#14341 - macrojon - Mon Jan 05, 2004 6:21 pm
| GameBoi wrote: |
icic ok, I understand what your trying to do now.
hmm...well if you can print the pictures to the Gameboy Printer, then I would start looking at it from that angle....like how the printer calls the files from the cam and sends them over the cable to the printer.
I think I am sugesting kinda something like how a PC can print to a file instead of a printer.
I guess what I am babling about is there a way to intercept the print data and save to pc or?
hmm.I'm new at this and have lots of crazy Ideas some of wich have worked :) so if this sounds crazy plz forgive me.
well you could always just use some old GBC Equipment to copy it to PC.
anyways I'm just a Newbie so what do I know lol, Good Luck! |
that's a good idea.
#14390 - tepples - Mon Jan 05, 2004 11:30 pm
| macrojon wrote: |
| i think you may dump the gba game save with a multi-boot link cable or something like that. it takes the advantage of the nintendo multi-boot patent. |
Patent? Does this mean my MBV2 cable is infringing?
| Quote: |
| but when a gb game cart being inserted,the multiboot feature is not available. you can't dump gb save in that way. |
EDIT: inaccurate information removed. gameboy carts don't respond to gba sram reads.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.
Last edited by tepples on Tue Jan 06, 2004 6:21 am; edited 1 time in total
#14416 - sgeos - Tue Jan 06, 2004 5:02 am
| tepples wrote: |
| Quote: | | but when a gb game cart being inserted,the multiboot feature is not available. you can't dump gb save in that way. |
Hold Start+Select while turning on the power to make multiboot available while a Game Pak is inserted. Then you can dump the SRAM with mb -f, or you can dump the ROM with mb -1. |
GB, not GBA. Can I really dump data from the older GB carts using my MBV2 cable?!
-Brendan
#14419 - macrojon - Tue Jan 06, 2004 8:37 am
Last edited by macrojon on Tue Jan 06, 2004 9:17 am; edited 2 times in total
#14420 - macrojon - Tue Jan 06, 2004 8:43 am
| sgeos wrote: |
GB, not GBA. Can I really dump data from the older GB carts using my MBV2 cable?!
|
no use
when it's a gb cart,even holding Start+Select,the multiboot mode doesn't work.
#14433 - tepples - Tue Jan 06, 2004 5:06 pm
I call prior art: Teenage Mutant Ninja Turtles II for arcade and NES. The patent application you linked (U.S. Patent App 20030211877) merely refers to changing the difficulty of the game for different numbers of players, not a minor proprietary variation of 18-year-old BootP. The claims that aren't part of TMNT II or some other NES game seem to be specific to aspects of the gameplay of Four Swords.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.