Hi,

I've just written a guide on how to use SGDK with QtCreator (my IDE of choice), 
with images.

It's available at 
https://github.com/AbigailBuccaneer/sgdk/wiki/sgdk-with-qtcreator - it's public 
domain, so feel free to copy it over to this wiki, or do whatever you want with 
it.

Thanks for the tools :)
--Abigail

Update tutorial to reflct last SGDK version.

 "gcc is not found in $PATH""

I think using Release 3.7.0 of eclipse.. i dont know how to do this step too :  


.... rebuild the index

... On Make Target view, create a new target for your project. ... 


Please Help me 


Greetings From A Brasilian Fan!!!

Could be interesting to add VDP_drawNum() and VDP_drawNumBG(), joining 
VDP_drawText() and IntToStr() to write numbers directly on screen using these 
functions.

Change the TFM Z80 driver to avoid that constraint.

Just add HV counter in the seed number, take care of not having any sync before 
it.

Add SR control in SGDK.
Should be already done but verify it.

Here is the format description :

.pal Paint Shop Pro colour palette file:

Contains the colour palette table saved from a 16 or 256 colour image. It can 
be loaded for another image and this provides a means of copying colour 
palettes from one image to another.

These files are text editable. The format of the file is as follows:

- The first line contains the header "JASC-PAL" (without the quotes).
- The second line contains the palette file version. For example "0100" 
(without the quotes)
- The third line contains the number of colours, either 16 or 256.
- Subsequent lines contain the Red, Green and Blue components of each palette 
entry, with a space between each of the Red, Green and Blue numbers. These 
numbers are in decimal, so each attribute should be in the range 0 to 255.

Using fading method on palette != PAL0 result in some unexpected results.
For instance VDP_fadePalOut(PAL1, ...) doesn't work correctly.

What steps will reproduce the problem?
1.VDP_drawImageEx() -> using Load Palette true


What is the expected output? What do you see instead?
If you load an image it flashes with the old palette during some milliseconds. 
Instead of show the correct palette.


What version of the product are you using? On what operating system?
SGDK - Last Version


Please provide any additional information below.

sprDef = getSpriteDefinition(data, wt, ht, wf, hf, time, collid);  (return null due to invalid palette in getTile)

removeEmptyFrame(sprDef);

Would be better to copy sega.s and romhead.c in project folder then compile 
them.

What steps will reproduce the problem?
1. Checkout the repo (r96);
2. Try to compile with Eclipse CDT;

First error will be about "libmd.a", which can be fixed by copying it to ./lib 
dir.
Second will be about:
"out/sega.o: In function `registersDump':
(.text+0x2a4): undefined reference to `registerState'".

How to fix that?

Use:

SHELL?=$(BIN)/sh
RM?= $(BIN)/rm
AR?= $(BIN)/ar
CC?= $(BIN)/gcc
LD?= $(BIN)/ld 

Instead of:

SHELL=$(BIN)/sh
RM= $(BIN)/rm
AR= $(BIN)/ar
CC= $(BIN)/gcc
LD= $(BIN)/ld

Add flag to ignore use of these methods in int callback.

The moon display tutorial does not work anymore because of the 
VDP_loadBMPTileData which seems to be broken when tile index destination is not 
aligned on 32.
Also check the default plan initialization...

In file included from src/xgmtool.c:8:0:
src/../inc/vgm.h:6:17: fatal error: gd3.h: No such file or directory
 #include "gd3.h"
                 ^

In file included from /opt/toolchains/gen//m68k-elf/include/genesis.h:7:0,
                 from main.c:8:
/opt/toolchains/gen//m68k-elf/include/types.h:142:21: error: conflicting types for 's8'
 #define int8_t      s8
                     ^
/opt/toolchains/gen//m68k-elf/include/types.h:79:14: note: previous declaration of 's8' was here
 typedef char s8;
              ^
Makefile:148: recipe for target 'main.o' failed
make: *** [main.o] Error 1

Maybe it will be better to move project on Github?

Github community could be a little bit active. :)

    while(1)
    {

    if (count > 5) {
        switch (steer) { // I change steer elsewhere
        case up:
            snakeSprite->posy = snakeSprite->posy - 8;
            direction = up;
            break;
        case down:
            snakeSprite->posy = snakeSprite->posy + 8;
            direction = down;
            break;
        case left:
            snakeSprite->posx = snakeSprite->posx - 8;
            direction = left;
            break;
        case right:
            snakeSprite->posx = snakeSprite->posx + 8;
            direction = right;
            break;
        }
        count = 0;
    }
    else count++;

        VDP_setSpriteP(0, &snakeSprite);
        VDP_updateSprites();

        VDP_waitVSync();

    }

==4496== Command: /tmp/wavtoraw /tmp/bug.wav bug.tmp 16000
==4496==
==4496== Conditional jump or move depends on uninitialised value(s)
==4496==    at 0x400B1B: main (wavtoraw.c:68)
==4496==
==4496== Conditional jump or move depends on uninitialised value(s)
==4496==    at 0x400C36: main (wavtoraw.c:93)
==4496==
==4496== Conditional jump or move depends on uninitialised value(s)
==4496==    at 0x400C82: main (wavtoraw.c:99)
==4496==
==4496== Conditional jump or move depends on uninitialised value(s)
==4496==    at 0x400CB0: main (wavtoraw.c:105)
==4496==
==4496== Conditional jump or move depends on uninitialised value(s)
==4496==    at 0x400D70: main (wavtoraw.c:99)
==4496==
==4496== Use of uninitialised value of size 8
==4496==    at 0x400DAD: main (wavtoraw.c:129)
==4496==

Malloc.h is deprecated and replaced by stdlib.h.  Leaving it in breaks building 
on FreeBSD (and presumably OSX, though I can't test this ATM)

Patches are attached.

In FadeInAll() after the function call, the original colors are left with a 
darker color... 

The RLE compression return corrupted image sometime.

Try to do a VRAM Copy DMA operation actually fails when done on the real 
hardware.

What steps will reproduce the problem?
1. Configure environment 
(https://code.google.com/p/sgdk/wiki/UseSGDKWithEclipse)
2. Checkout SDK from trunk.
3. Create "Hello world" example and try to build.

What is the expected output? What do you see instead?
Expected result: Application is compiled.
Actual result: Error "make: *** No rule to make target 
`C:/sega/sdk/lib/libmd.a', needed by `out/rom.out'.  Stop."

What version of the product are you using? On what operating system?
SDK from trunk

What steps will reproduce the problem?
1. Build sgdk file that includes both "genesis.h" and <stdio.h>
2.
3.

What is the expected output? 

Compilation should be successful.

What do you see instead?

Compilation fails with the following:

"""
/opt/toolchains/gen/m68k-elf/lib/gcc/m68k-elf/4.5.2/include/stddef.h:211:23: 
error: conflicting types for ‘size_t’
/opt/toolchains/gen/m68k-elf/include/types.h:160:22: note: previous declaration 
of ‘size_t’ was here
"""

The file stddef.h checks for the prior definition of __size_t which is not 
defined in types.h.  Defining this fixes the issue.  Here is the patch:

{{{
--- types.h.orig        2012-12-12 16:36:39.734989382 -0500
+++ types.h     2012-12-12 16:36:48.755034106 -0500
@@ -158,7 +158,7 @@

 // used for memcpy and memset ISO C method
 typedef unsigned int size_t;
-
+#define __size_t

 #define FASTCALL
}}} 



What version of the product are you using? On what operating system?

Ubuntu 12.10

Please provide any additional information below.

What steps will reproduce the problem?
1. Configure Eclipse with https://code.google.com/p/sgdk/wiki/UseSGDKWithEclipse
2. Compile any example from "sample" directory.

What is the expected output? What do you see instead?
Expected result: Image isn't duplicated.
Actual result: Image is duplicated.

Please see attachment (duplicated_image.PNG).

/**
 ...
 * A light gun returns the unsigned screen X coordinate. This is not calibrated;<br>
 * Calibration is left to the game to handle. The value is -1 if the gun is not<br>
 * pointed at the screen, or the screen is too dim to detect.<br>
 ...
 */

u16  JOY_readJoypadX(u16 joy);
 &
u16  JOY_readJoypadY(u16 joy);


Wrong return value, should be s16

Not really a issue but an featurerequest for the sake of completness.
the psg-part is missing a function for controlling the noisechannel.
something like the following should work (untested)

void PSG_setNoise(u8 type,u8 frequency)
{
vu8 *psg;
psg = (u8 *) PSG_PORT;
*psg = 0xE0 | ((type & 1) << 2) | (frequency & 0x3);
}

Updates to make SGDK portable (not requires GDK env.variable).

It's probably a C lenguage problem, but i write it for if its not.


unsigned char lenght = 25;
unsigned char buffer[lenght];

Compies but show's illegal instruction on screen.

Should return s16 instead u16

From

http://code.google.com/p/sgdk/source/diff?spec=svn171&r=171&format=side&path=/tr
unk/inc/string.h

42  u16 strcmp(const char *str1, const char *str2);

Also in string.c

- Should provide a stop command (just by unloading the driver).
- Fix multiple play operation (clear Z80 ram before loading params and driver).