Supermodel Forum

Here is a block diagram of a Model 3 Step 2.x video board: model 3 diagram.png - Mercury is the culling processor; it analyzes the scene graph and decides which objects should be rendered. - Venus is the geometry T&L unit. - Earth is the rasterization unit. - Mars is the texturing/shading unit. ...

Naturally there are some similarities, such as the use of two texture mapping units to enable one-pass trilinear filtering or multitexturing with bilinear filtering. However, on Model 3 the two Mars ASICs for each Earth ASIC are connected to each other, while the two Australia ASICs on Hikaru are no...

a bit off topic, but anyway - here is block diagram of Sega Hikaru video system. how do you think, is it looks similar to Real3D 100 / Model 3 ? IMO it is. Oh nice, I had been curious about that :D I'm working on a block diagram to show how the Model 3 video board ASICs are linked together, but suf...

The Real3D firmware suggests that the total amount of data written to the update buffer in "burst mode" is the size of the block plus two more 32-bit words; presumably these two extra words are the header containing the destination address and block size. (If "burst mode" is not ...

Pretty sure the geometry processing ASIC (Venus) was not upgraded for step 2.x. From my own testing step 1.5 games have similar polygon counts to step 2.x games. I can't be sure how much influence the original Real3D Pro-1000 had on the design of the Model 3 CPU board, but I'm pretty sure that Sega ...

The video board clock speed (50 MHz for step 1.x, 66 MHz for step 1.5/2.x*) applies to all of the ASICs and memory chips except for Jupiter, which is the ASIC that combines the 2D layers from the tilegen chip and the frame buffer to create the final video output; this probably runs at either 16 MHz ...

The beginner track of BOTE is actually the least intensive in terms of polygon count, peaking at 12.7k polygons of which 10.5k are quads and 2.2k are triangles. I know for a fact that most of the player car model is stored in polygon RAM rather than VROM and all of the polygons are individual with n...

Daytona 2 is pretty efficient with polygons, peaking at around 14k polygons and 42-43k vertices during a race around the Expert track. L.A. Machineguns however managed to beat ECA with a peak of 22,638 polygons and 68,863 vertices during the attract mode, stage 1 demonstration. I ought to check vide...

I decided to cook up something myself that tracks the total number of polygons (and also non-repeating vertices) rendered per frame, and the highest amount that I've seen is 24,582 polygons and 66,610 vertices in a single frame during the attract sequence of Emergency Call Ambulance. However, the re...

I've been taking a look at how Magical Truck Adventure interfaces with the soundboard to perform its "country check", and I think I've figured out how it works. Reading the MIDI control port at 0xF0080004 or 0xFE080004, bit 0 (0x01) signals whether the soundboard is ready to receive data w...