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* '''Grand Central'''. The Grand Central custom IC provides an interface between the standard Macintosh I/O devices and the PCI bus. A DMA controller in the Grand Central IC supports DMA I/O transfers through that IC’s internal I/O devices and through the Curio IC.  
 
* '''Grand Central'''. The Grand Central custom IC provides an interface between the standard Macintosh I/O devices and the PCI bus. A DMA controller in the Grand Central IC supports DMA I/O transfers through that IC’s internal I/O devices and through the Curio IC.  
 
* '''MESH'''. The MESH IC is a custom IC that controls the SCSI bus to the internal SCSI devices. Because this bus does not have to drive a long external bus, it can operate at higher transfer rates than the external SCSI bus.
 
* '''MESH'''. The MESH IC is a custom IC that controls the SCSI bus to the internal SCSI devices. Because this bus does not have to drive a long external bus, it can operate at higher transfer rates than the external SCSI bus.
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* '''Chaos''', a custom IC that provides data bus buffering between the video subsystem and the processor bus
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* '''Control''', a custom IC that provides addressing and control for the video subsystem
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* '''RaDACal''', a high-performance digital-to-analog converter (DAC) used for the video stream to the monitor
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* '''Sixty6''', an RGB-to-YUV converter and convolver for the second video output stream (on the Power Macintosh 8500 computer only)
    
=See Also=
 
=See Also=

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