Search found 2957 matches

by Stef
Wed Dec 06, 2006 12:02 pm
Forum: Super 32X
Topic: Any way to run 32X VDP without hurting MD mapping?
Replies: 7
Views: 6077

I think that if 32X is disabled, you just can't access his parts :-/
by Stef
Wed Dec 06, 2006 11:59 am
Forum: Announcement
Topic: Debugging emulator
Replies: 6
Views: 7776

This page has links to some neat Genesis debugging tools : http://www.romhacking.net/?Category=&Console=11&Game=0&Author=0&Recm=&Level=&utilsearch=++Go++&title=&dsearch=&page=utils&action=utillist Gens Tracer is probably one of the most interesting : http://www.romhacking.net/utils/Gens2.12aR2Tracer...
by Stef
Wed Dec 06, 2006 11:52 am
Forum: Video Display Processor
Topic: Is DMA useful ?
Replies: 30
Views: 12535

As said Fonzie, DMA isn't that fast at all and it freezes your CPU when operating. Futhermore you have to take care to use it only during Vblanking (or anysort of VDP inactivity) or it'll be a lot slower. The VDP access VRAM during drawing and leave very few time to others part for accessing it. Gen...
by Stef
Wed Dec 06, 2006 11:21 am
Forum: Sound
Topic: Programming Z80
Replies: 5
Views: 2781

Hi, Thanks for this contribution, actually i find it very usefull :) It's true the genesis has 2 processors and it would be good to use their maximum potential ! I think i'll use your code to play a bit with :) Too bad the z80 stays a 8 bits processor, too weak for some 3D processings i guess. Maybe...
by Stef
Sun Dec 03, 2006 11:06 am
Forum: Tools
Topic: [MDPPY] Coming soon...
Replies: 14
Views: 7429

CodeBlocks is a powerful editor for developers. You can configure it in many ways, of course it offers the usuals syntax highlight, code completion... features. We can natively configure it for genesis GCC compilation but for convenience on my setup i just added some custom tools to compile my rom a...
by Stef
Sat Dec 02, 2006 6:48 pm
Forum: Announcement
Topic: Forum is now open to public
Replies: 49
Views: 36123

I just checked your sources. Your code is really well written, i do like :)
I've already almost of your functions except the SegaCD specific ones.
I'll check what i can do here :)
by Stef
Sat Dec 02, 2006 6:04 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 789
Views: 346213

;)
by Stef
Sat Dec 02, 2006 12:20 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 789
Views: 346213

Yep, i did my own draw routines. You can see them by downloading the mini devkit, libraries sources are included. I'm using a 2 horizontal pixels based drawing methos because it's faster to manipulate byte than "half byte" :) All code is in pure C, we can obtain better performance with ASM but imo ...
by Stef
Sat Dec 02, 2006 12:13 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 789
Views: 346213

Genesis isn't designed for bitmap drawing, I've to use an internal bitmap buffer in main memory then blit it to video memory in software because i need to convert the bitmap in tiles. Are you double buffering the screen? Do you DMA transfer the screen over multiple frames? That's not a real "double...
by Stef
Sat Dec 02, 2006 11:49 am
Forum: Video Display Processor
Topic: VDP special tricks around sprites
Replies: 7
Views: 2688

I think we should concentrate these importants VDP infos in our post. So as soon someone post a correction or add a new info, you should correct and mention it in your first post. Then everyone can quickly access them :) About the sprite limit, in 256 px mode, i believe it's 24 sprites by line (not ...
by Stef
Fri Dec 01, 2006 7:34 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 789
Views: 346213

Re: mini Genesis dev kit v0.1

cdoty wrote:
plee wrote: Not everybody here is french :D
Nope, at least two of us are from Texas (Houston area even)!
hehe ;)
Don't worry, it was a joke, i'm not from one of these chauvinistic french ;)
by Stef
Fri Dec 01, 2006 7:29 pm
Forum: Announcement
Topic: Forum is now open to public
Replies: 49
Views: 36123

Just a supposition as i don't know when i'll be back on that but : can i use your sources to add your functions to the mini dev kit's libraries ? can i also modify them a bit if needed (to keep a sort of "standard" in name and call) ? Of course, i'll mention your name somewhere (i say somewhere beca...
by Stef
Fri Dec 01, 2006 12:53 pm
Forum: Tools
Topic: [MDPPY] Coming soon...
Replies: 14
Views: 7429

What about making a big genesis dev pack ? I'm thinking about CodeBlock editor configured and ready to use with GCC compiler and all the best genesis dev tools :) IMO it would be a nice project. I think the first step is to enumerate all the best and reliables tools for genesis dev, we can divide to...
by Stef
Fri Dec 01, 2006 12:46 pm
Forum: SGDK
Topic: Sega Genesis Dev Kit (SGDK)
Replies: 789
Views: 346213

Yep, i did my own draw routines. You can see them by downloading the mini devkit, libraries sources are included. I'm using a 2 horizontal pixels based drawing methos because it's faster to manipulate byte than "half byte" :) All code is in pure C, we can obtain better performance with ASM but imo t...
by Stef
Fri Dec 01, 2006 12:35 pm
Forum: Announcement
Topic: Forum is now open to public
Replies: 49
Views: 36123

Indeed, it would be nice to regroup them somewhere :)