6800

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The 6800 (M6800) was an 8-bit microprocessor designed and marketed by Motorola in 1974, with an architecture and orthogonal instruction set influenced by Digital Equipment Corporation PDP-11. Opposed to Intel's 8080 and MOS Technology 6502, the 6800 was a big-endian machine, concerning the byte-order of 16-bit words in memory.

=Architecture= The 6800 had two accumulators and a 16-bit index register, stack- and instruction pointer. The direct addressing mode allowed fast access the first 256 bytes of memory. MC6800 registers and I/O lines

=See also=
 * 6502
 * 68000
 * 8080
 * Z80

=Manuals=
 * M6800 Microprocessor Applications Manual
 * M6800 Programming Reference Manual

=External Links=

6800

 * Motorola 6800 from Wikipedia
 * Motorola 6809 from Wikipedia
 * Motorola 6800 Oral History Panel from The Computer History Museum
 * 6800 microprocessor from The Computer History Museum
 * 6800 MICROPROCESSOR Instruction Set Summary
 * Motorola 6800 microprocessor architecture from CPU-World: Microprocessor news, benchmarks, information and pictures
 * Motorola M6800 Microprocessor History
 * 6800 Basics (pdf)

6800 Controller

 * Motorola 68HC05 from Wikipedia
 * Freescale 68HC08 from Wikipedia
 * Hitachi HD6301 from Wikipedia.de (German)

=References=

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