SpritesMind.Net

My problems are now solved. It seems that I had those problems with sizes because of differences between GCC and SGCC. While an int is 32-bit in GCC, it seems to be 16-bit in SGCC. However, there is one more thing: I can only load tile data and maps from an array if it is const . May you tell me why?

Is the advance reg set to 2 like it should be? It is, but I got exactly the same tile when attempting to set the register to different values. volatile uint *pw; pw = (uint *) GFXCNTL; ... *pw = 0x8F02; A single 32-bit write to VDP data port, like *pl = 0x22222222 , resulted in a line with the widt...

Making the pointers volatile did not work. By writing: volatile ulong *pl; pl = (ulong *) GFXCNTL; *pl = GFX_WRITE_ADDR(0); pl = (ulong *) GFXDATA; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x00000000; *pl = 0x...

After adding the label "_start" to the beginning of the startup code and making it global, the program worked partially. The program should show a tile map and generate a PSG frequency, but it did not show the tile map. The VDP debug tool available in the emulator showed that the color were properly...

I have GCC 4.7.0.

When attempting to compile a program, I got the following warning: Additionally, the program (which I have compiled with SGCC before) did not work.

How can I correct it?

With the help of this page , I attempted to write a C function to generate a tone by the PSG. However, I got no sound. void play_tone() { register ulong *p; p = (ulong *)0xC00011; /* 440Hz for channel 0 */ *p = 0x8E; *p = 0xF; *p = 0x90; /* Maximum volume for channel 0*/ *p = 0xBF; /* Silence on cha...

When the program plays a song or instrument, it is not loud enough.

As I said, I think that the problem is with the positions. This is the full source: #include "genesis.h" void init_gfx(); void load_tiles(); void show_tiles(); void set_colors(); unsigned int Pal[128] = { 0x0000,0x00EE,0x0E0E,0x000E,0x0EE0,0x00E0,0x0E00,0x0888, 0x0CCC,0x0088,0x0808,0x0008,0x0880,0x0...

I think that the problem is with the positions of the tiles.

What are you working on btw ?

Nothing interesting.
I am just testing.

Shiru wrote:Nobody can answer what is wrong if you do not explain what you do and what you try to get. More information - more chances for answer.

Do you see the image?
There are some black parts where should be green.
And some green parts where should de yellow.

What can cause this problem with tiles?



I think that the problem is with the positions of the tiles.

Does anyone have documents about the GYM or VGM files?

I searched in Google.
But I did not find documents about joypad.

Where can I find?

You didn't change the value of pw, but change the value at the address of pw. Yes, I wanted to say this. Let me see if I understood: The first value that I write to the address of pw will keep at the first position from pw ; The second value that I write to the address of pw will keep at the second...

Why the value of *pw changes?
Why is not enough just one value?

I saw other detail, that looks clearer: Why are the while and black colors being set in the same place?