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hardware:custom_chipset [2010/03/07 15:49] gilgamesh |
hardware:custom_chipset [2010/03/09 10:01] gilgamesh |
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| ==== Denise ==== | ==== Denise ==== | ||
| - | (aka. Daphne) The Denise chip extracts the actual pixel data from bitplanes in memory. It also controls the video timings and resolution and sets the graphics modes like EHB, HAM or Dual Playfield. Denise contains the logic for hardware acceleration for displaying sprites and collision detection. | + | (aka. Daphne) The [[hardware/ |
| === Playfields === | === Playfields === | ||
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| The bitfields and palette information combined produce the so called playfield, a rectangular area of pixels. Playfields can actually be larger than the nominal display size (PAL, NTSC; LoRes, HiRes) to allow smooth scrolling of backgrounds. | The bitfields and palette information combined produce the so called playfield, a rectangular area of pixels. Playfields can actually be larger than the nominal display size (PAL, NTSC; LoRes, HiRes) to allow smooth scrolling of backgrounds. | ||
| + | |||
| + | The display size is | ||
| + | ^ Resolution | ||
| + | | LoRes | 320 | :::| PAL | no | 256 | | ||
| + | | ::: | ::: | :::| ::: | yes | 512 | | ||
| + | | HiRes | 640 | :::| NTSC | no | 200 | | ||
| + | | ::: | ::: |::: | ::: | yes | 400 | | ||
| ==== Paula ==== | ==== Paula ==== | ||
