crazyjul

Have you thought that the MacOS platform is Big endian, and that intel x86 and ds are both little endian. You can try swap every bytes you are reading. Good luck guy

I found this here : http://neimod.com/dstek/dstek2.xml Can you lokk at it?? Thanks

Hi all, after some research, I've found that the register REG_WRAMCNT is set to 3 at startup. This means that video BANK1 and BANK0 are assigned to the arm7. But in that case, does the video system work as for GBA?? Does anybody has idea about this??? Crazyjul

From what I've seen, it seems that DS graphic mode is close to GBA graphic mode when nothing is initialized. Does somebody can approve this?? Crazyjul

The darcs repository has been emptied and fill with tutorial Where all the code had gone?? Where can I found the source?? Thanks Crazyjul

So I'll try to make a lot of test. I'll start from scratch. From what I've understood, there are default value in vram mapping register, when I'll get my flasher, I'll try to read them. I will also do some test. For the demo that does not work when not intializing the vram, they seem to write sprite at 0x06004000. On DsTekWiki, this is shown as Sprte memory, maybe when no memory is map to this address space. Crazyjul

I've looked at sprite code. It seems that VRAMmap is never initialized, so when the program writes data int othe vmemory, as the vram pointer is null, the write is just skipped. It seems that video memory remapping register is never written. Nobody knows any default value of it?? It maybe explained why some demo works (in fact, if they remap VRAM, it should work) I will have a look at this tonight. Crazyjul

The integer square root do not exist in C or C++ library. My first idea was to convert it to double, do the square root ad convert it back. but the conversion of a int64 to double can cause loss of data. For now, i'm using this solution, knowing that it's both inaccurate and slow to execute. I've made small test apps with libnds that just display the result of some division and square root. I'm just waiting my flash linker to validate the result of the emulator. //EDIT : I've send a patch to doublec

If you're interested in, I caan look at the square root and divider accelerator I've already had a look at it, I just need to figure somthing out, and I think it'll be complete

With the sram fixed, I've made a bit of cleaning. I've remove nearly all warnings. I also fix declarations of all function. I think I've found a bug: In the sqrt intruction, you're doing : src=arm7reg.r[0]; arm7reg.r[0]= (u32) sqrt(src); As far as I know, this sqrt is made on integer and not float. Am I right?? If yes, as math.h was not include, sqrt was returning a float, but was treated as an int. IF no, the code should work,but it's better to cast the register as a float before calling sqrt. Hope it help I've send you the patchs with darcs send command. Crazyjul

Finally found what was wrong!!! The file sram.c was lacking in the project. Thanks for your help Do you want me to submit a patch?

To complete, when I compile the DS dll I get those link errors : dsmmumain.obj : error LNK2019: unresolved external symbol _sram_read referenced in function _MMUMainrdB dsmmusub.obj : error LNK2001: unresolved external symbol _sram_read dsmmumain.obj : error LNK2019: unresolved external symbol _sram_write referenced in function _MMUMainwrB dsmmusub.obj : error LNK2001: unresolved external symbol _sram_write glds.obj : error LNK2001: unresolved external symbol _sram_save glds.obj : error LNK2001: unresolved external symbol _sram_load .\..\..\Build\Debug/ds.dll : fatal error LNK1120: 4 unresolved externals Hope it help crazyjul

After unpulling the archive, it's working. Maybe you've forgot to put a file in the repository? Thanks for your fast answer. Crazyjul

I'm currently working with darcs files I've tried both. With nmake, files are missing, with vc6 project, symbols are missing ( symbols seems to come from mmu.c ) I've really no idea about what happens Crazyjul

I'd like to work on the emulator, but when I try to compile, nmake complains about missing file mmu.c. As it seems gpu.c is also lacking. Any ideas?? Thanks Crazyjul