Motorola 6809 - definizione. Che cos'è Motorola 6809
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Cosa (chi) è Motorola 6809 - definizione

MICROPROCESSOR
6809; M6809; Motorola 6809E; Motorola M6809; MBL 68B09E; 68B09E; Motorola 68B09E
  • 6809 programming model, showing the [[processor register]]s
  • SuperPET SP9000
  • 1 MHz '''Motorola 6809'''P processor, is a C65P [[mask set]] manufactured the tenth week of 1992
  • TRS-80 Color Computer
  • Vectrex home video game console

Motorola 6809         
(MC6809) An eight-bit microprocessor from Motorola, Inc. The 6809 was a major advance over both its predecessor, the Motorola 6800 and also over the 6502. The 6809 had two 8-bit accumulators, rather than one in the 6502, and could combine them into a single 16-bit register. It also featured two index registers and two stack pointers, which allowed for some very advanced addressing modes. The 6809 was source compatible with the 6800, even though the 6800 had 78 instructions and the 6809 only had around 59 (including a SEX instruction). Some instructions were replaced by more general ones which the assembler would translate, and some were even replaced by addressing modes. Other features were one of the first multiplication instructions of the time, 16-bit arithmetic and a special fast interrupt. But it was also highly optimised, gaining up to five times the speed of the 6800 series CPU. Like the 6800, it included the undocumented HCF (Halt and Catch Fire) bus test instruction. The Hitachi 6309 was a version with extra registers. The 6809 was used in the UK "Dragon 32" personal computer and was followed by the Motorola 68000. See also SEX. Usenet newsgroup: news:comp.sys.m6809. There is a simulator called usim and an assembler by Lennart Benschop <lennart@blade.stack.urc.tue.nl> was posted to Usenet newsgroup alt.sources on 1993-11-03. (1995-02-01)
6809         
Motorola C168/C168i         
GSM MOBILE PHONE BY MOTOROLA
Motorola C168; Motorola C168i
The Motorola C168/C168i is a low-cost 850/1900-band GSM mobile phone, made by Motorola. It was released in the fourth quarter of 2005.

Wikipedia

Motorola 6809

The Motorola 6809 ("sixty-eight-oh-nine") is an 8-bit microprocessor with some 16-bit features. It was designed by Motorola's Terry Ritter and Joel Boney and introduced in 1978. Although source compatible with the earlier Motorola 6800, the 6809 offered significant improvements over it and 8-bit contemporaries like the MOS Technology 6502, including a hardware multiplication instruction, 16-bit arithmetic, system and user stack registers allowing re-entrant code, improved interrupts, position-independent code and an orthogonal instruction set architecture with a comprehensive set of addressing modes.

Among the most powerful 8-bit processors of its era, it was also much more expensive. In 1980 a 6809 in single-unit quantities was $37 compared to $9 for a Zilog Z80 and $6 for a 6502. It was launched when a new generation of 16-bit processors were coming to market, like the Intel 8086, and 32-bit designs were on the horizon, including Motorola's own 68000. It was not feature competitive with newer designs and not price competitive with older ones.

The 6809 was used in the TRS-80 Color Computer, Dragon 32/64, SuperPET, ENER 1000, and Thomson MO/TO home computers, the Vectrex game console, and early 1980s arcade machines including Star Wars, Defender, Robotron: 2084, Joust, and Gyruss. 1990s Williams pinball machines are equipped with WPC-series controller boards based on 68B09. Series II of the Fairlight CMI digital audio workstation and Konami's Time Pilot '84 arcade game each use dual 6809 processors. Hitachi was a major user of the 6809 and later produced an updated version as the Hitachi 6309.