SpritesMind.Net

I know this thread is about color counts/detail, but what about horizontal resolution? What I like about MegaDrive is that most games use 40 column display mode which is good for emulation on QVGA LCDs, i.e. various handhelds like GP2X (yes I'm from handheld scene). SNES and PCE games mostly use 32 ...

Most games also do checksums to detect if they are not corrupted before starting, so you can simply test a few 4MB games.

Yeah, I don't think any emus are doing mirroring and there is no known games that would need it.

I never had a hold of mastersystem, as well as compatible carts, since i'm in eastern europe that was once a part of USSR. Same here, but I've seen one in some shop sometime in the nineties. MegaDrive was kind of popular at one point though, there were even Sonic commercials on TV! So it wasn't com...

It's not really visible after it passes through compo(site/shite) conversion:

Regen is correct, here is a screenshot from PAL MD1 (after pressing start): http://notaz.gp2x.de/md/img/barver/barver0.jpg My guess is that you are relying on RAM being cleared on power-on, where in fact it contains random data when MD starts. Same goes for save data: http://notaz.gp2x.de/md/img/bar...

It also seems there is an internal RAM that hold a copy of the Sprite Attribute table (maybe some kind of cache for sprites that have already been processed on previous lines) so maybe changing the SAT base address midframe when the SAT cache is already filled with some info might produce some unwa...

Looks like there were some updates:
http://68000.web.fc2.com/pringles.html

the S-Factor had all MOVE #0 replaced with CLRs and well you know what happens when you CLR on VDP :P Why so? I thought MOVE #0 and CLR are working internally the same way if you look from the side of MMU or RAM. The catch is that they are not. Clr performs dummy read before it writes 0, so if you ...

Had it happen a few times, need to press "stop" and "reload" to get it loaded, or else it just hangs. It feels like the server sometimes drops the incoming request.

It seems to have a minor bug in 3button controller code path, this patch fixes it:
000E76:4600

I used it for real hardware testing, as I only have a 3 button pad. Will have to patch checksum if you want to use it though.

werdas wrote:Real Sega can see 10 Megabytes of rom

It can't without additional hardware in cartridge. Even in that case it would not work with 32X and/or Sega CD attached.

Chilly Willy wrote:Yeah, you missed that add 2 to a1.

damn! It's sometimes so easy to miss the obvious.

Chilly Willy wrote:the second is for setting SSF2 bank registers.

Really? By writing some 8 values to $A130F1?

I thought SSF2 banking works like this:
write to $A130F3 sets a bank at $080000-$0fffff
write to $A130F5 sets a bank at $100000-$17ffff
...

Besides some exception vectors it has these 2 strange routines: ... ROM:000000B8 dc.l $88030E ROM:000000BC dc.l $880314 ROM:000000C0 ; --------------------------------------------------------------------------- ROM:000000C0 bset #0,($A15107).l ROM:000000C8 move.b d0,(a1) ROM:000000CA bclr #0,($A1510...