Quote:
Originally Posted by zero
Right, where did you get "16mb" from what? Is that mega BITS or mega BYTES?
The CPS display is NOT planar. The sprite and tile data is stored in a planar format, but the display is tile and layer based with independent palettes. The display is made up of tile maps and sprites. The point here is that you can't simply convert that to a 256 colour planar display.
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I always wonder how arcade games has such nice graphics with so few KB of RAM (CPS: 64 KB WORK RAM + 192 KB VRAM)?
So how does CPS work? Does it have traditional buffer like ST and Amiga (bitplanes in memory which are read by hardware that generate signal for TV or monitor?) or hardware for generating video signal read data of sprites directly from ROM at exact position while TV beam draw image?
Or if you copy all sprites, background... from ROM to frame buffer - how fast you need to read and write data from ROM to frame buffer?? It looks like you need some serious bandwidth? I am really puzzled by hardware of Arcade games...