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The Amiga 30 lines use Super Buster for bus control and arbitration of both Zorro II and Zorro III subsystems. Super Buster (Fat Buster) Super Buster in A4000

Buster controls bus arbitration and DMA for the Zorro II expansion subsystem. Expansion Buster īuster is the expansion BUS conTrollER and was used in the Amiga 2000(B), integrating discrete logic from the original A2000(A).

It replaces six 74F646s and four 74F245s chips used in the original A3000 design. The conversion works by writing 32 8-bit chunky pixels to Akiko's registers and reading back eight 32-bit words of converted planar data to be copied to the display buffer.īridgette is an integrated bus buffer in the A4000 series. Akiko assists this conversion in hardware, instead of shifting the bits solely by CPU code which would cause more overhead. However, chunky displays are faster and more efficient for 3D graphics manipulation. The Amiga's native display is a planar display which is simple and efficient to manipulate for routines like scrolling or 2D composition. It controls a one kilobyte EEPROM for saving data such as highscores etc.Īdditionally, the Akiko chip is able to assist simple ' chunky-to- planar' graphics conversion in hardware. In detail, it includes control logic for the CD32's CD-ROM controller, system timers, the two game ports, the serial ('AUX') port, and the chip memory soldered onto the motherboard. Akiko is responsible for implementing system glue logic that in previous Amiga models were found in the discrete chips Budgie, Gayle and the two CIAs. It also incorporates the control logic for the PCMCIA and internal ATA interface on these systems.Īkiko is the CD32's all-purpose 'glue' chip and forms part of the AGA chipset used in that system. Gayle replaced Gary in the A600 and A1200. It integrates many functions built discretely in the earlier Amiga 1000 in order to reduce costs.įat Gary was Gary's upgrade for the 32-bit A3000/T and A4000/T. Gary provides glue logic for bus control and houses supporting functions for the floppy disk drive.

System logic Amiga 3000 motherboard showing various custom chips Gary ĬSG 5719 Gary, short for Gate Array, has been used in the Amiga 500, 2000(B) and CDTV. In addition to the Amiga chipsets, various specially designed chips have been used in Commodore Amiga computers that do not belong to the 'Amiga chipset' in a tight sense.