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- There are 2 tilemap planes available for use on the Sega Genesis: a background plane ("Plane B") and a foreground plane ("Plane A"). Depending on the machine type (NTSC or PAL) and the video mode used (H40 or H32 mode), a full-screen tilemap will take up either a width of 32 or 40 tiles by a height of 28 or 30 tiles.
megacatstudios.com/blogs/retro-development/sega-genesis-mega-drive-vdp-graphics-guide-v1-2a-03-14-17
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Aug 5, 2019 · Depending on the machine type (NTSC or PAL) and the video mode used (H40 or H32 mode), a full screen tilemap will take up either a width of 32 or 40 tiles by a height of 28 or 30...
- Mega Cat Studios
Dec 2, 2015 · You can add new collision tiles, edit existing ones, or paint to the map using existing ones by clicking a tile in the Collision Tiles panel. You can also delete tiles and set a different one as the default tile by right-clicking one in the Collision Tiles panel.
The "naive" way of doing that is to use the Sonic 3D approach : have a virtual map supporting a maximum of 4096 tiles but internally you use tilemap as a frame buffer (no duplicated tiles, an uniq tile id for each tile) and just stream tiles for each new column / new row of the fly.
- A Quick Introduction
- Graphics
- Audio
- Games
- Anti-Piracy / Region Lock
Sega (and their TV ads) want you to know: Developers can’t come up with decent games unless the console provides faster graphics and richer sounds. Their new system includes lots of already familiarcomponents ready to be programmed. This means that, in theory, developers would only need to learn about Sega’s new GPU… right?
The answer is Blast Processing!, what else do you need to know? Okay, if you want to know the real answer: graphics data is processed by the 68000 and rendered on a proprietary chip called Video Display Processor(or ‘VDP’ for short) which then sends the resulting frame (in the form of scan lines) for display. The VDP runs at ~13 MHz and supports mu...
The audio capabilities of this console are a bit unorthodox, to say the least. On one side, the Mega Drive provides existing audio technology from the previous generation, on the other side, it adds a new (but complicated) synthesis technique on top of the existing one. So, in some ways, you get both generations. That being said, the Mega Drive hou...
Games are mainly written in 68000 assembly while the sound driver is implemented with Z80 assembly. Both reside in the cartridge ROM and can size up to 4 MB without the need for a mapper.
To block imported games, Sega slightly changed the shape of the cartridge slot between regions though it kept the same pinouts. Games could also perform ‘region locking’ by checking the value of the Versionregister (which outputs the region value). There were two easy ways to bypass this. First, by buying one of those third-party cartridge converte...
May 30, 2017 · Each tile can be 16 colors, using one of any of the 4 available 16 color palettes. Unlike 8 bit consoles, there is not a fixed number of unique tiles that can be used, as you can store tile images in any part of available vram. The number of background tiles can range from 64 to 1808 tiles.
Allone Works. 16Tile is a tool designed to help creating tilemaps for the Sega Genesis/Mega Drive. The tool features a simple user interface focused on tilemap editing as well as different paint modes: Tile Mode, Palette Mode, Priority Mode and the Tilemap Painter, which allows the user to paint directly into the tilemap.
