Coding language

commodorejohn · Post by **commodorejohn** » Sat Mar 31, 2007 2:41 pm

I can work with assembler okay, but C makes things so much easier to keep organized and saves a lot of work. And on an 8MHz machine, the (very minor) speed loss doesn't really matter much. So...C, with some ASM.

Edge-` · Post by **Edge-`** » Sat Mar 31, 2007 7:42 pm

I've recently switched to Stef's minimalized GCC dev kit. I encourage anyone still using XGCC or anything older to do so :>, I'm enjoying it. If we can all improve on it (report bugs, submit useful functions, document use, etc) it could become a great benefit to the scene.

commodorejohn · Post by **commodorejohn** » Sun Apr 01, 2007 12:44 pm

Where does one get that?

Stef · Post by **Stef** » Sun Apr 01, 2007 2:07 pm

Edge-` wrote:I've recently switched to Stef's minimalized GCC dev kit. I encourage anyone still using XGCC or anything older to do so :>, I'm enjoying it. If we can all improve on it (report bugs, submit useful functions, document use, etc) it could become a great benefit to the scene.

Thanks Edge for making pub for the minimal devkit

I'm added the function you want but i guess you did without it

Where does one get that?

here
still missing a lot of stuff, but it's continuously progressing

TmEE co.(TM) · Post by **TmEE co.(TM)** » Mon Apr 02, 2007 7:32 am

Question: how many functions are in MiniDevKit ? I collected all my ASM routines together, made them something library like and there's around 50 to 60 functions.

Stef · Post by **Stef** » Mon Apr 02, 2007 8:06 am

TmEE co.(TM) wrote:Question: how many functions are in MiniDevKit ? I collected all my ASM routines together, made them something library like and there's around 50 to 60 functions.

I can't say how many exactly but i guess a bit more than 60...

MG · Post by MG » Mon Apr 02, 2007 8:20 am

C and a little bit of ASM.

C from the GenesisDev mini-kit by Stef.
ASM since now just to test.

I'm spending all my time to search and include sprites and tiles for background than making code.

I am not hurry to reach the goal that I fixed myself : make a map plan, and 2 or 3 sprites with all the movements possible.

Stef · Post by **Stef** » Mon Apr 02, 2007 9:43 am

MG wrote:C and a little bit of ASM.

C from the GenesisDev mini-kit by Stef.
ASM since now just to test.

I'm spending all my time to search and include sprites and tiles for background than making code.

I am not hurry to reach the goal that I fixed myself : make a map plan, and 2 or 3 sprites with all the movements possible.

I done a converter which can convert binary file to C table (whatever type is supported) file.
Recently i added 4 bits BMP support : it convert a 4 bpp BMP to a u16 table C file :
1 word : width
2 word : height
3-18 words : palette in megadrive format
19-X : 4 bpp bitmap data

TmEE co.(TM) · Post by **TmEE co.(TM)** » Mon Apr 02, 2007 2:55 pm

Why can't binary files be included in C like in ASM ?

Fonzie · Post by **Fonzie** » Mon Apr 02, 2007 3:55 pm

yeah, that's wierd, maybe the philosophy of C is not to store data in the code itself (sorry if i'm wrong ^^)... if i recall correctly, kaneda did a "incbin" port for xgcc...

ElBarto · Post by **ElBarto** » Mon Apr 02, 2007 5:00 pm

TmEE co.(TM) wrote:Why can't binary files be included in C like in ASM ?

I don't exactly understand what you want to say.
You can do :
ld main.o graphic.o where graphic.o is a binary file of a raw image and use it into your code with the extern prefix for a variable.
I already do that for the gamecube, works well.

TmEE co.(TM) · Post by **TmEE co.(TM)** » Tue Apr 03, 2007 9:44 am

I meant, that for example, in stefs MDK, audio data was tored in word declarations, not just WAV or other format which is more convenient(least for me)

Stef · Post by **Stef** » Tue Apr 03, 2007 9:55 am

TmEE co.(TM) wrote:I meant, that for example, in stefs MDK, audio data was tored in word declarations, not just WAV or other format which is more convenient(least for me)

In fact i convert them to C file because i need an identifier to reference the binary data. It's possible to link binary file to your C project with the linker, but then, how you can reference them in your C code ?

TmEE co.(TM) · Post by **TmEE co.(TM)** » Tue Apr 03, 2007 9:58 am

Well, its dark land to me... no experience with C... yet. I still like ASM more.

Mask of Destiny · Post by **Mask of Destiny** » Tue Apr 03, 2007 1:35 pm

Stef wrote: In fact i convert them to C file because i need an identifier to reference the binary data. It's possible to link binary file to your C project with the linker, but then, how you can reference them in your C code ?

objcopy automatically creates start and end symbols when you turn a raw binary into an ELF .o based on the file name. You'll need something like this in your source:

Code: Select all

extern unsigned char _binary_somefile_ext_start[];
extern unsigned char _binary_somefile_ext_end[];

There's also a symbol called _binary_somefile_ext_size, but I tend to just do pointer math on the start and end symbols instead.

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Coding language

What language do you use ?