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1980s Commodore Amiga Silicon Wafer Framed



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This is a very rare beautiful display of the 1985 Commodore Amiga Silicon Wafer known as the “Gary Chip” wafer.  Art work starts with a microscopic view of the Commodore wafer.  Actual original wafer is included with microscope blow up to details.  In 1985, this was the cutting edge in chipsets.  The Commodore Amiga was the most technically advanced personal computer of the 80's.  This silicon wafer contains one of the Amiga's special function chips, the 5719R4, better know as the “Gary” chip.  The Amiga's cult-like following is largely due to the technological superiority enabled by an ingenious set of specially designed chips.  The chips in this chipset were given whimsical names like Fat Angus, Denise, Gary, Buster, Ramsey and so on.  These chips enabled the Motorola 68000 CPU heart of the Amiga to do so much more.  Gary is part of the original Amiga OCS chipset (which also included Angus, Denise, CIA, and Paula).  Gary was primarily an I/O type processor.  He coordinated access to bus, the floppy drive, and the IDE port.  In his spare time he did address decoding and also handled some self-diagnostic functions.  By off-loading the CPU with this chipset, Commodore created an extraordinarily powerful machine.  The Amiga A1000 was introduced in July of 1985.  The Commodore Semiconductor Group (CSG) produced this four inch wafer at its fabrication plant in Norristown, Pennsylvania.  CSG was subsidiary of Commodore Business Machines, created by the purchase of MOS Technologies (creator of the 6502 microprocessor).  This wafer is in perfect condition.  It is fully completed and ready to be scored and diced into about 400 individual die, or "chips".  There are also five standard test dies on the wafer (one in the center and the other four in an "X" pattern).  The wafer is made using NMOS silicon gate technology.  Commodore and the Amiga were early pioneers and leading contributors to personal computer technology.  The Amiga demonstrated some very creative designs that still hold-up well today, but were lost in the market's rush to standardize on the Intel / IBM PC platform.  A group of dedicated followers still keep Commodore and the Amiga alive and well with numerous websites and clubs.  A few “Gary” chips can be found private Amiga’s in collections.  This is truly a very rare piece and museum quality display.  This is an incredible framed display and has provenance notes on back and on front.  It measures 11” x 14” x 2” black with glass face and will highlight any collection of computer antiques.

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