SpritesMind.Net

... ROM:0001AC36 move.l d3,(a6) First 0x0080 is written, which enable dma transfer and freeze 68k. Then, in the same move.l, 0x8164 is written, which enable display. So in real hardware, cpu is frozen between the 2 words move. I really doubt you can freeze the CPU in the middle of instruction. At l...

sbroumley wrote: Haha..yes it is, but the platform I'm coding on is very slow....

What platform are you coding for?

Would be nice if you allowed image uploads or external image embedding ($wgAllowExternalImages).

I've started some small hardware project, so collected some info here:
http://wiki.megadrive.org/index.php/Hardware_Interfaces
(chose this instead of Aamir's wiki because of cooler domain name)

I would like to see this completed, if you know more info, please add

Stef wrote:it doesn t happen on real hardware.

I can confirm that.

Strange PicoDrive got it right, I haven't done anything specific for this. I know that sprite masking section in Charles' genvdp.txt is not entirely correct though, but I can't remember exact details.

No, I didn't say that, I said the contrary: most probably, enabling/disabling the display can have immediate (mid-line) effect Yeah, and this is where most (all?) emulators could fail, as they have line-based rendering. Fortunately no games seem to be messing with stuff in the middle of line, but I...

How about setting up a wiki here, somewhere like gendev.spritesmind.net/wiki . As most interested people hang around here anyway, it would make most sense to have the wiki right on this site.

KanedaFr, what do you think?

There is also a USB solution here (scroll down)
viewtopic.php?t=462

but it's maker is sometimes difficult to contact.

I've finally received one of these :) It took ~6 weeks to come because of problems with customs but it's finally here. Is the cart reprogamable with the MD on? Yes. It can be programmed when inserted in MD. But I don't sure, how it will be work, when MD power is on. Strongly recommended pull out thi...

Works here rather well with bubuntu 8.04 and nvidia hardware. Switching video driver on runtime causes bad things to happen though, like black screen or lost inputs.

Interesting

Yeah, looking forward to see the code.

mickagame wrote:I rewrote the core in C++.

Hm, and what benefit it gave you? CPU object?
(just wondering why people may want to use OOP in emulators).

mickagame wrote:I'm using Stephane Dallongeville C68k core rewritten in C++.

AFAIK it's done in C, not C++ (i.e. no OOP there).

I've access to few more machines on other ISPs and they can't resolve it too:

** server can't find gendev.spritesmind.net: NXDOMAIN

www.spritesmind.net works fine though.

Nice find, time to do some quick patching