WDC 65816/65802
The WDC 65816 (also: 65C816), a 16-bit microprocessor CPU developed by the Western Design Center (WDC), is an expanded and compatible successor to the venerable MOS Technology 6502. The number 65 in the 65816's name comes from the 6502 compatibility, and 816 signifies that it can work in both 8 and 16 bit modes.
The 65816 was second-sourced by GTE, Sanyo and a couple of other semiconductor companies from the mid-to-late 1980s to the early 1990s. As of 2008, it is still sold by WDC, and the architecture has also been implemented as an IP core in some systems, such as Winbond's W55V9x series of TV Edutainment ICs.
The processor was designed almost entirely by WDC's founder and CEO Bill Mensch, who began work on the chip after consulting Apple Computer in 1982. The only person who aided him in his work was his sister Kathryn who did part of the layout. The chip was finished in March, 1984 with samples sent to both Apple and Atari.The WDC 65816 (also: 65C816), a 16-bit microprocessor CPU developed by the Western Design Center (WDC), is an expanded and compatible successor to the venerable MOS Technology 6502. The number 65 in the 65816's name comes from the 6502 compatibility, and 816 signifies that it can work in both 8 and 16 bit modes.
The 65816 was second-sourced by GTE, Sanyo and a couple of other semiconductor companies from the mid-to-late 1980s to the early 1990s. As of 2008, it is still sold by WDC, and the architecture has also been implemented as an IP core in some systems, such as Winbond's W55V9x series of TV Edutainment ICs.
The processor was designed almost entirely by WDC's founder and CEO Bill Mensch, who began work on the chip after consulting Apple Computer in 1982. The only person who aided him in his work was his sister Kathryn who did part of the layout. The chip was finished in March, 1984 with samples sent to both Apple and Atari.
The WDC 65802 (also: 65C802) is a 65816 CPU in a 6502-pinout package (fully 6502 compatible). The 65802 was produced by WDC and GTE during the mid-to-late 1980s and early 1990s.
The chip was designed as an upgrade path from the 8-bit 6502/65C02 to the new 65816 16-bit CPU. To do this, the 65802 has a 16-bit address bus like the 6502/65C02 (64 KB memory space), reduced from the 24-bit address bus of the 65816. All of the bank select registers, etc., from the 65816, are still intact in the 65802 CPU core, they just have no effect when used. Typically, when hardware manufacturers have designed a project from the ground up, they have used the more powerful 65816.
The 65816 was second-sourced by GTE, Sanyo and a couple of other semiconductor companies from the mid-to-late 1980s to the early 1990s. As of 2008, it is still sold by WDC, and the architecture has also been implemented as an IP core in some systems, such as Winbond's W55V9x series of TV Edutainment ICs.
The processor was designed almost entirely by WDC's founder and CEO Bill Mensch, who began work on the chip after consulting Apple Computer in 1982. The only person who aided him in his work was his sister Kathryn who did part of the layout. The chip was finished in March, 1984 with samples sent to both Apple and Atari.The WDC 65816 (also: 65C816), a 16-bit microprocessor CPU developed by the Western Design Center (WDC), is an expanded and compatible successor to the venerable MOS Technology 6502. The number 65 in the 65816's name comes from the 6502 compatibility, and 816 signifies that it can work in both 8 and 16 bit modes.
The 65816 was second-sourced by GTE, Sanyo and a couple of other semiconductor companies from the mid-to-late 1980s to the early 1990s. As of 2008, it is still sold by WDC, and the architecture has also been implemented as an IP core in some systems, such as Winbond's W55V9x series of TV Edutainment ICs.
The processor was designed almost entirely by WDC's founder and CEO Bill Mensch, who began work on the chip after consulting Apple Computer in 1982. The only person who aided him in his work was his sister Kathryn who did part of the layout. The chip was finished in March, 1984 with samples sent to both Apple and Atari.
The WDC 65802 (also: 65C802) is a 65816 CPU in a 6502-pinout package (fully 6502 compatible). The 65802 was produced by WDC and GTE during the mid-to-late 1980s and early 1990s.
The chip was designed as an upgrade path from the 8-bit 6502/65C02 to the new 65816 16-bit CPU. To do this, the 65802 has a 16-bit address bus like the 6502/65C02 (64 KB memory space), reduced from the 24-bit address bus of the 65816. All of the bank select registers, etc., from the 65816, are still intact in the 65802 CPU core, they just have no effect when used. Typically, when hardware manufacturers have designed a project from the ground up, they have used the more powerful 65816.
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