--- In gbadev@yahoogroups.com, Jan Van Belle <janvanbelle@y...> wrote:
> So if I understand it correctly, it is impossible to
> use the ARM controller and the Z80 controller at the
> same time in a kind of multiprocessing mode ?
>
> Kind regards,
>
> Jan

Exactly.

--- Yosuf <ytaraki@...> wrote:
>
>
> When GBA came out I discovered that my
> board would not run it, even though GBA is backwards
> compatible with
> GBC.  As someone else already commented, GBA has a
> micro-switch that
> detectes which type of cartridge is inserted (GBC or
> GBA).

So if I understand it correctly, it is impossible to
use the ARM controller and the Z80 controller at the
same time in a kind of multiprocessing mode ?

Kind regards,

Jan






___________________________________________________________
ALL-NEW Yahoo! Messenger - all new features - even more fun!
http://uk.messenger.yahoo.com

Hello,

I am designing a cartridge for the GBA and would like to add a small
sized flash card to it, to use as mass storage. I have tried to get
the specifications for SD cards and other types but it seems that the
manufacturers do not disclose them.
Does anyone have any information about this?

I would appreciate any help.

thanks,
Vital

Salam Farhad,

I looked at your website and the eBay auction for your GameBoy CPLD
product.  Good work!  However, I believe you will need a mechanical
redesign to get your board to run on a GBA (or GBA SP).  A few years
ago I designed a board to run on a GBC (see
www.databoy.netfirms.com).  When GBA came out I discovered that my
board would not run it, even though GBA is backwards compatible with
GBC.  As someone else already commented, GBA has a micro-switch that
detectes which type of cartridge is inserted (GBC or GBA).  After
some experimentation I figured out how to modify the shape of my
board to activate the switch in the GBA to place it in the GBC
compatibility mode.  My modified board will now run on a GBC, GBA, or
GBA SP.  I would be glad to share the details with you.  Please
contact me offline if you are interested.
P.S. The photos you have on eBay show your board plugged into a GBA.
I think this is misleading because I believe your current board will
not run on a GBA.

Regards,
Yosuf Taraki

--- In gbadev@yahoogroups.com, Farhad Abdolian <ny_farhad@y...> wrote:
>
> Excellent,
> Thank you very much, it will be a great help.
>
> Does anyone here have the information about the GBA exact layout or
> knows where I can get it?
>
> TIA,
> /Farhad
>  --- gb_feedback <gb_feedback@y...> wrote:
> > --- In gbadev@yahoogroups.com, "Farhad Abdolian" <ny_farhad@y...>
> > wrote:
> > > GBA is 3.3V and does not have any 5V outputs as far as I can
tell.
> > And
> > > most if not all the GBC cartridges are 5V only, is there a
trick?
> >
> > The GBA cart is notched on the side and the GBC is not. This
operates
> >
> > a switch inside the GBA to turn on 5V (and makes other
adjustments
> > such as switching on a different CPU) if a GBC cart is inserted.
GBC
> > carts work in the GBA by design, not by chance!
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
> ___________________________________________________________
> ALL-NEW Yahoo! Messenger - all new features - even more fun!
http://uk.messenger.yahoo.com

Excellent,
Thank you very much, it will be a great help.

Does anyone here have the information about the GBA exact layout or
knows where I can get it?

TIA,
/Farhad
  --- gb_feedback <gb_feedback@...> wrote:
> --- In gbadev@yahoogroups.com, "Farhad Abdolian" <ny_farhad@y...>
> wrote:
> > GBA is 3.3V and does not have any 5V outputs as far as I can tell.
> And
> > most if not all the GBC cartridges are 5V only, is there a trick?
>
> The GBA cart is notched on the side and the GBC is not. This operates
>
> a switch inside the GBA to turn on 5V (and makes other adjustments
> such as switching on a different CPU) if a GBC cart is inserted. GBC
> carts work in the GBA by design, not by chance!
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>





___________________________________________________________
ALL-NEW Yahoo! Messenger - all new features - even more fun!
http://uk.messenger.yahoo.com

--- In gbadev@yahoogroups.com, "Farhad Abdolian" <ny_farhad@y...>
wrote:
> GBA is 3.3V and does not have any 5V outputs as far as I can tell.
And
> most if not all the GBC cartridges are 5V only, is there a trick?

The GBA cart is notched on the side and the GBC is not. This operates
a switch inside the GBA to turn on 5V (and makes other adjustments
such as switching on a different CPU) if a GBC cart is inserted. GBC
carts work in the GBA by design, not by chance!

Hi,
I have a question about the use of GBC cartridges inside a GBA unit. I
know that manyof them work without any problem and I wonder if that is
a general case?

GBA is 3.3V and does not have any 5V outputs as far as I can tell. And
most if not all the GBC cartridges are 5V only, is there a trick?

The reasone for this is that I want to test my GBC cartridge
(http://www.abdolian.com/gameboy) inside my GBA.

Any help is highly appreciated,

Best regards,
/Farhad

...does anybody know where I can get it?

Thanks,
   - c5.

Update: I have found the solution myself.

I had an org 2000000h instruction in the header of my program.

Removing that line solved all my problems - I have now my picture on
the screen.

Sorry for the stupid mistake...

Miklos

Hello all,

I have a question about memory structure in the GBA.

I have the following code (taken from a GBA assembler tutorial).

The code should display a picture on the screen

------------------------------------------
main:
         mov r0, #0x4000000
         mov r1, #0x400
         add r1, r1, #3
         strh r1, [r0]
         mov r0, #0x6000000
         ldr r1, =pic       @ my question refers to this line here!
         mov r2, #0x960
loop1:
         ldmia r1!, { r3,r4,r5,r6,r7,r8,r9,r10 }
         stmia r0!, { r3,r4,r5,r6,r7,r8,r9,r10 }
         subs r2, r2, #1
         bne loop1

infin:
         b infin
.ltorg

pic:

     DCW 0x4A31,0x4E52,0x4A31,0x4E52,0x4E52,0x4E52,0x4E53,0x4A32
     DCW 0x4A31,0x4631,0x4631,0x4A31,0x4631,0x4631,0x4610,0x4611
     DCW 0x4631,0x4A52,0x4A52,0x4A52,0x4E72,0x4A52,0x4A31,0x4A31
and lots more of DCW...

------------------------------------

When I use the code with no$GBA it assembles and runs fine.  The
result should be a picture shown on the GBA screen.

However the program runs, but the screen remains black.

Debugging the program I find, that the line
   ldr r1, =pic
does not point to the picture data.

My code is in the 8000000 adress region, so the pic: data is at about
  80000FC. However when I stop the debugger right after the mentioned
instruction, I see, thet r1 contains  20000FC. That adress (20000FC)
is according to the debugger filled with lots of zeroes, therefore no
surprise that my screen remains black.

What am I doing wrong here? Why does the above mentioned instruction
not contain the proper adress for my data?

I am sorry for the newbie question - but I am stuck here. Any help
would be really welcome!

Thank you all,

Miklos

Google gba assembler tutorial and you will get many useful hits. Good luck.

miklos_tomka wrote:

>
>
> --- In gbadev@yahoogroups.com, Damien Good <caitsith2@c...> wrote:
> >
> > Grab the Magic floor demo from http://nocash.emubase.de/gba-dev.htm
> >
> > It's source code was made for the no$gba built in assembler.
> >
> >
>
> Thank you. I already found it. It looks great, however it also looks
> fairly complex for me (being at the very early learning stages). I was
> hoping to find a couple of examples which are much shorter (and
> therefore easier to understand).
>
>
>
>
>
>
>
>
>
> ------------------------------------------------------------------------
> *Yahoo! Groups Links*
>
>     * To visit your group on the web, go to:
>       http://groups.yahoo.com/group/gbadev/
>
>     * To unsubscribe from this group, send an email to:
>       gbadev-unsubscribe@yahoogroups.com
>       <mailto:gbadev-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>
>     * Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>       Service <http://docs.yahoo.com/info/terms/>.
>
>

I drew and scanned 2 characters with simple moving.
I don't know how to write the event code that control these
characters that the one to go the meet and talk to another.
After speak, they leave out,... some type like this ^_^.

--- In gbadev@yahoogroups.com, Damien Good <caitsith2@c...> wrote:
>
> Grab the Magic floor demo from http://nocash.emubase.de/gba-dev.htm
>
> It's source code was made for the no$gba built in assembler.
>
>

Thank you. I already found it. It looks great, however it also looks
fairly complex for me (being at the very early learning stages). I was
hoping to find a couple of examples which are much shorter (and
therefore easier to understand).

I can't seem to find nedcmake.exe and nedcenc.exe anywhere, and the
online dotcode generator link now leads to a porn site.

Is there some place I can download these tools, or are there alternate
forms of converting VPK files to raw data?

Thanks for your help, and if I'm just being blind, I appologize. :P

Mickey McMurray
MetaFox

Grab the Magic floor demo from http://nocash.emubase.de/gba-dev.htm

It's source code was made for the no$gba built in assembler.

----- Original Message -----
From: "miklos_tomka" <miklos_tomka@...>
To: <gbadev@yahoogroups.com>
Sent: Tuesday, January 25, 2005 10:36 AM
Subject: [gbadev] Any source code samples for no$GBA?


>
>
>
> Hello all,
>
> I started to explore assmbler on the GBA. I have found various
> tutorials about assembler programming, but none which would use no$GBA
> and its built in assembler.
>
> Would anybody have a link to a site which does that? Or: are there
> source codes for the no$GBA assembler I could look at to learn from?
>
> Or would you have any other advice about how to approach this?
>
> Thank you to all,
>
> Miklos
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hello all,

I started to explore assmbler on the GBA. I have found various
tutorials about assembler programming, but none which would use no$GBA
and its built in assembler.

Would anybody have a link to a site which does that? Or: are there
source codes for the no$GBA assembler I could look at to learn from?

Or would you have any other advice about how to approach this?

Thank you to all,

Miklos

--- In gbadev@yahoogroups.com, "miklos_tomka" <miklos_tomka@y...> wrote:
>
> I have paid over 2 weeks ago for no$GBA via Paypal - after discussing
> a couple of questions with the developer Martin Korth by email.
>
> However since I paid, I have not heard back from him, and my emails
> have not been answered either.
>  Or should I wait?
>
Update: I have received the program today. It was worth the loooong
wait (from end of December till today...)!

And: thanks for the two responses to my initial post!

He does take a while to send the keys and related files,  but I haven't had
any problems in that regard.
----- Original Message -----
From: "Sam Nova" <sam@...>
To: <gbadev@yahoogroups.com>
Sent: Friday, January 14, 2005 2:04 AM
Subject: RE: [gbadev] Has anyone bought recently no$GBA?


>
>
> Howdy,
>
> Maybe Martin just went on extended New Year holidays !! Anyway, in that
> case he should have told you. I never bought no$GBA but ont of his older
> systems (for GBC) and had no problems.
>
> Best,
>
> Sam
>
>> -----Original Message-----
>> From: miklos_tomka [mailto:miklos_tomka@...]
>> Sent: Thursday, January 13, 2005 11:39 PM
>> To: gbadev@yahoogroups.com
>> Subject: [gbadev] Has anyone bought recently no$GBA?
>>
>>
>>
>>
>>
>> Hello all,
>>
>> I have paid over 2 weeks ago for no$GBA via Paypal - after
>> discussing a couple of questions with the developer Martin
>> Korth by email.
>>
>> However since I paid, I have not heard back from him, and my
>> emails have not been answered either.
>>
>> My question obviously is: has anybody here had similar
>> experiences? Should I connect Paypal with a complaint and
>> with a request to get my money back? Or should I wait?
>>
>> Any comments would be welcome!
>>
>> Regards,
>>
>> Miklos
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Howdy,

Maybe Martin just went on extended New Year holidays !! Anyway, in that
case he should have told you. I never bought no$GBA but ont of his older
systems (for GBC) and had no problems.

Best,

Sam

> -----Original Message-----
> From: miklos_tomka [mailto:miklos_tomka@...]
> Sent: Thursday, January 13, 2005 11:39 PM
> To: gbadev@yahoogroups.com
> Subject: [gbadev] Has anyone bought recently no$GBA?
>
>
>
>
>
> Hello all,
>
> I have paid over 2 weeks ago for no$GBA via Paypal - after
> discussing a couple of questions with the developer Martin
> Korth by email.
>
> However since I paid, I have not heard back from him, and my
> emails have not been answered either.
>
> My question obviously is: has anybody here had similar
> experiences? Should I connect Paypal with a complaint and
> with a request to get my money back? Or should I wait?
>
> Any comments would be welcome!
>
> Regards,
>
> Miklos
>
>
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>

Hello all,

I have paid over 2 weeks ago for no$GBA via Paypal - after discussing
a couple of questions with the developer Martin Korth by email.

However since I paid, I have not heard back from him, and my emails
have not been answered either.

My question obviously is: has anybody here had similar experiences?
Should I connect Paypal with a complaint and with a request to get my
money back? Or should I wait?

Any comments would be welcome!

Regards,

Miklos

Hi,
I am working on a GB cartridge for GBA with 16Mb Flash and 1-4Mb
SRAM, the pricing of the unit depends highly on your volume,
packaging etc.

For prototype I would say something arround 30-50, but in volume
production (say in 1000s) it will be 10-20 depending on the
complexity of you device number of IO you have how much else you
need on that board etc.

BR,
/Farhad
--- In gbadev@yahoogroups.com, Hari Nair <harinnair@y...> wrote:
>
> Hi,
>
> I'm new to this forum - i've been interested in developing hw/sw
> applications for the GBA more as a novelty, but am now wondering
> whether it is commercially viable to actually ROM an application.
>
> My development/prototyping platform is VHAM and an F2A 64Mb card.
The
> kind of applications I am developing would normally fit in less
than
> 16Mb  - data logging/instrumentation type of stuff, but I would
need
> battery backed SRAM as well.
>
> What kind of volume commitments/pricing would one expect for
ROMing an
> application like this ? Any pointers would be much appreciated.
>
> HN
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Mail - Find what you need with new enhanced search.
> http://info.mail.yahoo.com/mail_250

Hi,

I'm new to this forum - i've been interested in developing hw/sw
applications for the GBA more as a novelty, but am now wondering
whether it is commercially viable to actually ROM an application.

My development/prototyping platform is VHAM and an F2A 64Mb card. The
kind of applications I am developing would normally fit in less than
16Mb  - data logging/instrumentation type of stuff, but I would need
battery backed SRAM as well.

What kind of volume commitments/pricing would one expect for ROMing an
application like this ? Any pointers would be much appreciated.

HN



__________________________________
Do you Yahoo!?
Yahoo! Mail - Find what you need with new enhanced search.
http://info.mail.yahoo.com/mail_250

----- Original Message -----
From: "Joe McKenzie" <me@...>
To: <gbadev@yahoogroups.com>
Sent: Monday, December 06, 2004 5:02 PM
Subject: Re: [gbadev] Re: Creating an e-reader program


>
>
> dracosilver_furcadia wrote:
>
>>
>>--- In gbadev@yahoogroups.com, Joe McKenzie <me@j...> wrote:
>>
>>
>>>dracosilver_furcadia wrote:
>>>
>>>
>>>
>>>>How would i go about creating a program for the e-reader and
>>>>compiling/testing it?  I can figure out how to create the dot-codes
>>>>from the files, but creating those files is what I can't figure out.
>>>>
>>>>Any help is appreciated.
>>>>
>>>>Thanks!
>>>>
>>>>Sincerely,
>>>>Jonathan Herr
>>>>
>>>>
>>>Somebody cracked the encryption/CRC on the dotcodes and wrote a program
>>>to convert the raw program and data into a bitmap.  There's another
>>>program to print the bitmaps.  (Remember to cut the margin the right
>>>size; use an official card as a sample.)  You can't just print them from
>>>any program because the scaling messes up the dots' readability.  I
>>>tried to print the Bombsweeper sample program on my Lexmark Z22, but I
>>>just kept getting read errors on both normal inkjet paper and Kodak
>>>photo paper.  Later I might try using an older (really stubborn) inkjet
>>>or a really old 24-pin dot-matrix.  The author's suggestion to correct
>>>this is to examine the printed output with a scanner or microscope and
>>>see if you can see any problems.  Also try other DPI settings.  (The
>>>output is never quite the same size as an official dotcode, but this
>>>doesn't seem to bother the eReader, but trying to scale it to the right
>>>size makes it completely unreadable.)
>>>The actual tools:
>>>http://users.skynet.be/firefly/gba/e-reader/tools/index.htm
>>>Some info: http://users.skynet.be/firefly/gba/e-reader/index.htm
>>>
>>>-Joe McKenzie
>>>
>>>
>>
>>So with those tools I should be able to create the raw programs and data?
>>
>
> The "Nintendo e-Reader Z80 Assembler and Linker v1.0" package
> (http://users.skynet.be/firefly/gba/e-reader/tools/asxxxx_z80_ereader_10.zip)
> can be used to write programs for the e-Reader's Z80 emulation mode.
> (See the e-Reader Z80 API info at
> http://users.skynet.be/firefly/gba/e-reader/api_z80.htm if you want to
> use graphics, sound or input.)  The e-Reader also has a built-in NES
> emulator, which can run NES mapper type 0 games.  Use a NES
> compiler/assembler to write these.  The e-Reader can also run normal GBA
> code, which you would make using a GBA compiler.  (Though I don't know
> where the entry point is....)
> Nintendo only uses NES mode (for ports of old NES games) and Z80 mode
> (for stuff like the Pokemon card mini-games).  They only use GBA mode
> for loaders to transmit data to games (like the Animal Corssing cards).
> This is probably because GBA code takes up so much space, it would take
> too many cards to store any decent game.
> Once you write your program, you'll need the RAW to BMP program
> (http://users.skynet.be/firefly/gba/download/raw-to-bmp-v11.zip) to
> convert the raw data into bitmaps and the dotcode print tool
> (http://users.skynet.be/firefly/gba/e-reader/tools/dotcode-print-v10.zip)
> to print them.  (1200 dpi on photo paper is recommended for best
> results, though I've yet to print a dotcode that doesn't create a read
> error.)
> Also look at the other programs (and samples) there.  The flash maker
> looks particularly useful; it converts e-Reader programs into regular
> GBA ROMs, which would let you test and debug them with an emulator
> instead of printing out each revision only to watch it crash.
>
> -Joe McKenzie

I believe the Z80 entrypoint is 0x100.

For the gba code type, it is 0x2000000.   At this location,  the CRT0
needed, is nothing like the CRT0 used for compiling a multiboot game.
Basically, the code is something like this.

.TEXT
.ARM
_start:
LDR R0, =(_start_thumb+1)
BX R0

.THUMB
_start_thumb:

Push {LR} @ save the return address.
@ BSS clearing loop here
POP {R3}
MOV LR, R3
LDR R3, =main
BX R3

.ALIGN
.POOL
.END.


Basically,  you have no header, no nintendo logo data,  no header checksums.

This also means, when main returns,  your back in the e-reader menu again.

dracosilver_furcadia wrote:

>
>--- In gbadev@yahoogroups.com, Joe McKenzie <me@j...> wrote:
>
>
>>dracosilver_furcadia wrote:
>>
>>
>>
>>>How would i go about creating a program for the e-reader and
>>>compiling/testing it?  I can figure out how to create the dot-codes
>>>from the files, but creating those files is what I can't figure out.
>>>
>>>Any help is appreciated.
>>>
>>>Thanks!
>>>
>>>Sincerely,
>>>Jonathan Herr
>>>
>>>
>>Somebody cracked the encryption/CRC on the dotcodes and wrote a program
>>to convert the raw program and data into a bitmap.  There's another
>>program to print the bitmaps.  (Remember to cut the margin the right
>>size; use an official card as a sample.)  You can't just print them from
>>any program because the scaling messes up the dots' readability.  I
>>tried to print the Bombsweeper sample program on my Lexmark Z22, but I
>>just kept getting read errors on both normal inkjet paper and Kodak
>>photo paper.  Later I might try using an older (really stubborn) inkjet
>>or a really old 24-pin dot-matrix.  The author's suggestion to correct
>>this is to examine the printed output with a scanner or microscope and
>>see if you can see any problems.  Also try other DPI settings.  (The
>>output is never quite the same size as an official dotcode, but this
>>doesn't seem to bother the eReader, but trying to scale it to the right
>>size makes it completely unreadable.)
>>The actual tools:
>>http://users.skynet.be/firefly/gba/e-reader/tools/index.htm
>>Some info: http://users.skynet.be/firefly/gba/e-reader/index.htm
>>
>>-Joe McKenzie
>>
>>
>
>So with those tools I should be able to create the raw programs and data?
>

The "Nintendo e-Reader Z80 Assembler and Linker v1.0" package
(http://users.skynet.be/firefly/gba/e-reader/tools/asxxxx_z80_ereader_10.zip)
can be used to write programs for the e-Reader's Z80 emulation mode.
(See the e-Reader Z80 API info at
http://users.skynet.be/firefly/gba/e-reader/api_z80.htm if you want to
use graphics, sound or input.)  The e-Reader also has a built-in NES
emulator, which can run NES mapper type 0 games.  Use a NES
compiler/assembler to write these.  The e-Reader can also run normal GBA
code, which you would make using a GBA compiler.  (Though I don't know
where the entry point is....)
Nintendo only uses NES mode (for ports of old NES games) and Z80 mode
(for stuff like the Pokemon card mini-games).  They only use GBA mode
for loaders to transmit data to games (like the Animal Corssing cards).
This is probably because GBA code takes up so much space, it would take
too many cards to store any decent game.
Once you write your program, you'll need the RAW to BMP program
(http://users.skynet.be/firefly/gba/download/raw-to-bmp-v11.zip) to
convert the raw data into bitmaps and the dotcode print tool
(http://users.skynet.be/firefly/gba/e-reader/tools/dotcode-print-v10.zip)
to print them.  (1200 dpi on photo paper is recommended for best
results, though I've yet to print a dotcode that doesn't create a read
error.)
Also look at the other programs (and samples) there.  The flash maker
looks particularly useful; it converts e-Reader programs into regular
GBA ROMs, which would let you test and debug them with an emulator
instead of printing out each revision only to watch it crash.

-Joe McKenzie

Remember N-Scene? Well we're back and our forums are live and
accepting subscribers...

Please visit:
http://www.gci.net.tc/

Our website is being worked on and will launch shortly.


Laters, Dave (N-Scene Administrator)

--- In gbadev@yahoogroups.com, Joe McKenzie <me@j...> wrote:
>
> dracosilver_furcadia wrote:
>
> >
> >
> > How would i go about creating a program for the e-reader and
> > compiling/testing it?  I can figure out how to create the dot-codes
> > from the files, but creating those files is what I can't figure out.
> >
> > Any help is appreciated.
> >
> > Thanks!
> >
> > Sincerely,
> > Jonathan Herr
>
> Somebody cracked the encryption/CRC on the dotcodes and wrote a program
> to convert the raw program and data into a bitmap.  There's another
> program to print the bitmaps.  (Remember to cut the margin the right
> size; use an official card as a sample.)  You can't just print them from
> any program because the scaling messes up the dots' readability.  I
> tried to print the Bombsweeper sample program on my Lexmark Z22, but I
> just kept getting read errors on both normal inkjet paper and Kodak
> photo paper.  Later I might try using an older (really stubborn) inkjet
> or a really old 24-pin dot-matrix.  The author's suggestion to correct
> this is to examine the printed output with a scanner or microscope and
> see if you can see any problems.  Also try other DPI settings.  (The
> output is never quite the same size as an official dotcode, but this
> doesn't seem to bother the eReader, but trying to scale it to the right
> size makes it completely unreadable.)
> The actual tools:
> http://users.skynet.be/firefly/gba/e-reader/tools/index.htm
> Some info: http://users.skynet.be/firefly/gba/e-reader/index.htm
>
> -Joe McKenzie

So with those tools I should be able to create the raw programs and data?

dracosilver_furcadia wrote:

>
>
> How would i go about creating a program for the e-reader and
> compiling/testing it?  I can figure out how to create the dot-codes
> from the files, but creating those files is what I can't figure out.
>
> Any help is appreciated.
>
> Thanks!
>
> Sincerely,
> Jonathan Herr

Somebody cracked the encryption/CRC on the dotcodes and wrote a program
to convert the raw program and data into a bitmap.  There's another
program to print the bitmaps.  (Remember to cut the margin the right
size; use an official card as a sample.)  You can't just print them from
any program because the scaling messes up the dots' readability.  I
tried to print the Bombsweeper sample program on my Lexmark Z22, but I
just kept getting read errors on both normal inkjet paper and Kodak
photo paper.  Later I might try using an older (really stubborn) inkjet
or a really old 24-pin dot-matrix.  The author's suggestion to correct
this is to examine the printed output with a scanner or microscope and
see if you can see any problems.  Also try other DPI settings.  (The
output is never quite the same size as an official dotcode, but this
doesn't seem to bother the eReader, but trying to scale it to the right
size makes it completely unreadable.)
The actual tools:
http://users.skynet.be/firefly/gba/e-reader/tools/index.htm
Some info: http://users.skynet.be/firefly/gba/e-reader/index.htm

-Joe McKenzie

I read in the Devrs FAQ that the little pot in the original GBA controls
the voltage to the LCD.  Is this the same as the one in the SP's battery
compartment?  If so, could somebody please tell me the correct
resistance of this thing (or a way to measure the net voltage over time
to the LCD -- Note that I don't have a graphing multimeter, just a
normal one)?  I messed with it before I read that it could shorten the
life of the LCD.

Thanks.
-Joe McKenzie

How would i go about creating a program for the e-reader and
compiling/testing it?  I can figure out how to create the dot-codes
from the files, but creating those files is what I can't figure out.

Any help is appreciated.

Thanks!

Sincerely,
Jonathan Herr

Hi all,

Just want to inform you that our company Two Tribes, a Dutch gamedeveloper,
is looking for talented people to join our development team, both
programmers and designers are welcome. Two Tribes focusses mainly on
portable videogames, ranging from the most humble mobile phone to for
instance the GBA, the new Nintendo DS or Sony's PSP.

Interested, please take a look at: http://www.twotribes.com/jobs/

Regards,

Martijn Reuvers