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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)
 
* '''Sixty6''', an RGB-to-YUV converter and convolver for the second video output stream (on the Power Macintosh 8500 computer only)
 
* '''Sonora''' is a new custom chip that integrates the functions of the V8 and SWIM chips used in the Macintosh LC II. These functions include timing, memory mapping, video and sound control, miscellaneous GLU (General Logic Unit) functions, and floppy disk control.  
 
* '''Sonora''' is a new custom chip that integrates the functions of the V8 and SWIM chips used in the Macintosh LC II. These functions include timing, memory mapping, video and sound control, miscellaneous GLU (General Logic Unit) functions, and floppy disk control.  
 +
* '''Spice'''. A custom IC called Spice combines several functions performed by individual ICs in older machines: memory mapping, VIA1/VIA2 registers, SWIM2.
 
* '''Sporty''', a custom IC that provides sound output amplification functions
 
* '''Sporty''', a custom IC that provides sound output amplification functions
 
* '''Squidlet''' is a 28-pin chip that provides a set of synchronized system clocks for Power Macintosh computers.  
 
* '''Squidlet''' is a 28-pin chip that provides a set of synchronized system clocks for Power Macintosh computers.  
 
* '''SWIM''' (Super Woz Integrated Machine), the IC that supports the SuperDrive high-density floppy disk drive
 
* '''SWIM''' (Super Woz Integrated Machine), the IC that supports the SuperDrive high-density floppy disk drive
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==V==
 
==V==
 
* '''Valkyrie'''. The Valkyrie IC is a custom IC containing the logic for the video display. It includes the following functions: display memory controller, video CLUT (color lookup table), video DAC (digital-to-analog converter).
 
* '''Valkyrie'''. The Valkyrie IC is a custom IC containing the logic for the video display. It includes the following functions: display memory controller, video CLUT (color lookup table), video DAC (digital-to-analog converter).

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