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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.
Motorola 6800 die [1]

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 [2]

See also

• 6502
• 68000
• 8080
• Z80

Manuals

^[3]

• 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 Summar
• 6800 Instruction Set
• Motorola 6800 microprocessor architecture from CPU-World: Microprocessor news, benchmarks, information and pictures
• Motorola M6800 Microprocessor History
• 6800 Basics

6800 Controller

• Motorola 68HC05 from Wikipedia
• Freescale 68HC08 from Wikipedia
• Hitachi HD6301 from Wikipedia.de (German) ^{[4] [5]}

References

1. ^ Motorola 6800 from visual6502.org
2. ^ Motorola 6800 from Wikipedia
3. ^ Manuals hosted by the Internet Archive
4. ^ HD6301Y0 Datasheet(PDF) - Hitachi Semiconductor
5. ^ Hitachi HD6301V1 from Schachcomputer.info Wiki

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