The MOS Technology "Agnus", usually called Agnus, is an integrated circuit in the custom chipset of the Commodore Amiga computer. The Agnus, Denise and Paula chips collectively formed the OCS and ECS chipsets. Agnus features: Agnus was replaced by Alice in the Amiga 4000 and Amiga 1200 when the AGA chipset was introduced in 1992.
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| - Agnus (Amiga) (de)
- MOS Technology Agnus (en)
- Agnus (sv)
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| - Der Agnus (lat. für Lamm) ist einer der Custom-Chips im Chipsatz des Commodore Amiga. In den späteren Versionen wurde er in Alice umbenannt. (de)
- Agnus är en av de integrerade kretsar som ingår i ett chipset tillverkat av MOS Technology och som används i Amiga-datorer. (sv)
- The MOS Technology "Agnus", usually called Agnus, is an integrated circuit in the custom chipset of the Commodore Amiga computer. The Agnus, Denise and Paula chips collectively formed the OCS and ECS chipsets. Agnus features: Agnus was replaced by Alice in the Amiga 4000 and Amiga 1200 when the AGA chipset was introduced in 1992. (en)
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| - Der Agnus (lat. für Lamm) ist einer der Custom-Chips im Chipsatz des Commodore Amiga. In den späteren Versionen wurde er in Alice umbenannt. (de)
- The MOS Technology "Agnus", usually called Agnus, is an integrated circuit in the custom chipset of the Commodore Amiga computer. The Agnus, Denise and Paula chips collectively formed the OCS and ECS chipsets. The Agnus is the Address Generator Chip. Its main function, in chip area, is the RAM Address Generator and Register Address Encoder which handles all DMA addresses. The 8361 Agnus is made up of approximately 21000 transistors and contains DMA Channel Controllers. According to Jay Miner, original Agnus was fabricated in 5 μm manufacturing process like all OCS chipset. The Blitter and Copper are also contained here. Agnus features:
* The Blitter, a Bitmap image manipulator. The Blitter is capable of copying blocks of display data, or any arbitrary data in the on-board memory, at high speed with various raster operations as well as drawing pixel perfect lines and filling outlined polygons, while freeing the CPU for concurrent tasks.
* "Copper", a display synchronized co-processor
* 25 Direct Memory Access (DMA) channels, allowing graphics, sound and I/O to be used with minimal CPU intervention
* DRAM refresh controller
* Memory controller (memory that can be accessed by the processor and the chipset)
* Generates the system clock from the 28 MHz oscillator
* Video timing Agnus was replaced by Alice in the Amiga 4000 and Amiga 1200 when the AGA chipset was introduced in 1992. (en)
- Agnus är en av de integrerade kretsar som ingår i ett chipset tillverkat av MOS Technology och som används i Amiga-datorer. (sv)
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