Akiko (Amiga) Information
Akiko is a custom chip used in the Amiga CD32 games console and forms part of the AGA chipset used in that system. Akiko is responsible for implementing system glue logic, some of the control logic for the CD32's CD-ROM controller, and controlling the serial ('AUX') port [1].
Additionally, the Akiko chip is able to perform 'chunky' to 'planar' graphics conversion in hardware. The Amiga's native display is a planar display which is simple and efficient to manipulate for routines like scrolling. However, chunky displays are faster and more efficient for 3D graphics manipulation. Akiko allows this conversion to be performed in hardware instead of relying on software conversion which would cause more overhead. The conversion works by writing 32 chunky pixels to Akiko's registers and reading back eight 32-bit words of converted planar data which can then be copied to the display buffer.
References
- ^ "The Big Book of Amiga Hardware - Custom Chips: Akiko". http://bboah.amiga-resistance.info/cgi-bin/showhardware_en.cgi?HARDID=1449.
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