SpritesMind.Net

Trying to talk to the flash chips is one way to go about it, if the chip isn't giving expected response you knew you're not on original hardware. Most flash chips have means to ask an ID from them. You could even put saves on the chip too if the sectors are small enough, beware of limited write capa...

Works nice now ~

...aaand here's one more. This ROM makes the emulator silently quit : http://www.tmeeco.eu/BitShit/PSMUSIC.BIN

You only update the row and column just beyond edge of screen towards scrolling direction, no need to deal with entire tilemap. Almost all games work that way too.

Are you sure the SetVRAMwrite creates the correct command word for VDP ?

Technically you're not supposed to use the "1111" as ID, only the "0000"

You'll eternally have wrong input if you don't do the switching right. TH and others remain what they were set by the code, they never magically change state if you wait, not even when you press reset. Only power-on-reset will reset controller ports IO to a predetermined state (and games use it to d...

Altera FPGAs : Flex, ACEX, APEX series (3.3V or smaller core but 5V capable IO). All are long obsolete, probably impossible to find and most probably not supported in free licenses. Altera CPLDs : MAX7000, 7000S (5V) and MAX3000 (3.3V but 5V capable IO). They are no longer manufactured. You'll have ...

Screen centering in interlace mode seems to be correct in 60Hz but in 50Hz there's a big downwards shift. You can test it with this thing I made a while ago : http://www.tmeeco.eu/BitShit/XMAS2K9.BIN Is there means to change region on the fly ? It would be a nice feature, especially since there seem...

It remains there and works as normal.

You got 3 buttons and a scroll wheel on vast majority of modern mice. The scroll wheel can be the 4th button.

To clarify, only SDATA can carry any data. BCLK and LRCLK are always retaining their function. LRCLK length can vary, allowing different word lengths on SDATA.

There's always 3 lines, Bit Clock, LR Clock and Serial Data. Bit Clock is what everything is synchronized to and it tells when there's a new bit in the stream on Serial Data, LR clock tells when data starts/ends. http://www.tmeeco.eu/BitShit/I2Sstuff.png (this image is illustrative, LRCLK polarity i...

Pinouts differ (VCC is in a totally different place), with a small modification those things could be used. No idea how hostile the protocol is, it might be better idea to just make your own adaptor and have existing Sega mice compatibility there, far more useful for most people I imagine.