SpritesMind.Net

Is it possible to "read back" tiles you've loaded into the VDP using SGDK?

If not, what MMIO ports and commands will get me access to the tiles already loaded into the Genesis VDP?

I used noname22's script it and got this error building the MD TicTacToe on C++

t800@cabronazo:~/Escritorio/TicTacToe/C++/MD$ make -f Makefile
m68k-elf-g++ -T /opt/toolchains/gen/ldscripts/md.ld -Wl,-Map=output.map -nostdlib -ffreestanding -fno-rtti crt0.o crtstuff.o main.o hw_md.o font.o -L/opt ...

There is a potential issue with newlib 2.1.0.

I have encountered this error when compiling the toolchain in linux (ubuntu 14.04 with GCC 4.8.2): https://sourceware.org/ml/newlib/2014/msg00258.html

The solution appears to be rolling back to newlib 2.0.0. I'm still in the middle of compiling now ...

The more I come along in my project, the more I realise it would be nice to have some object-orientation. Would SGDK work with C++? Has anyone ever used it with C++ before?

Preferably, there would be some FPGA that I could reprogram, maybe even by uploading precompiled vhdl code within a Genesis rom. That would open up the exciting possibility of games that extend themselves purely in software.

I've advertised this in my signature but this is an excellent place to do so as well.

http://i.imgur.com/9TKocSR.png

Contributors of all backgrounds (coders, artists, and musicians) are welcome to contribute to Mega Swirl , my current MD game project. Mega Swirl is a puzzle game inspired by and ...

I'm not quite sure I'm mapping colours properly from RRGGBB to Sega BGR.

The image I'm starting with is a 4bpp image, only sixteen colours. Here is the image (converted from 4bpp BMP to PNG, same colours though):

http://i.imgur.com/H7nIWP8.png

So what I'm doing to convert colours is taking the ...

I posted this in the SGDK thread but it may better belong here. Does anyone else have trouble using the modulo (%) operator? My compiler using this setup gives an error when attempting to use it.

Stef wrote:Just tested and the 32 bits modulo does work for me, did you have a special compiler setup ??

I use kubilus' Linux Genesis Dev Setup, so this may be an issue specific to that then.

Is it possible to use the modulo operator (%) in SGDK? I attempt to use it, however, GCC closes with an "undefined reference to `__modsi3'" error.

What if you don't have a mega everdrive? How about making it unlock bonus features? Or a sega cd version? Maybe better compression will get you enough space?

I personally have thought of this and you could detect and enable Mega Everdrive specific features. However, I would imagine most people ...

You should also consider making your game require the Mega Everdrive, and store heavyweight assets in files on SD that your ROM can access in game. With an Everdrive, your game has a theoretical limit of 32GB with a maximum individual file size of 4GB. Your ROM size will still be capped at roughly ...

Bit of a longshot but worth asking: are there m68k versions of GDC (for D programming language) or gccgo (for Golang)? Can we use them for genesis dev if they do exist? I'm loving what's new in the languages space.

Does this use the latest SGDK?

All right, wish I could test but I've recently upgraded to Ubuntu 14.04, which got me bitten by the texinfo 5 bug. Tried applying Mask of Destiny's diff but I may be doing it wrong as it gives an error when patching Makefile. I'll have to look further into this when I have the time.