M6800 - ορισμός. Τι είναι το M6800
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Τι (ποιος) είναι M6800 - ορισμός

8-BIT MICROPROCESSOR
M6800; MC6800; MC6818; Motorola 6802; EXORciser; Motorola EXORciser; Motorola 6808; MC6802
  • MITS Altair 680
  • Block diagram of a M6800 microcomputer system
  •  A Motorola MC6800 microprocessor registers and I/O lines
  • Introductory advertisement for the MOS Technology MCS6501 microprocessor in August 1975
  • Motorola 6800 DIP chip [[pinout]]
  • [[MIKBUG]] was part of the extensive M6800 microcomputer support developed by Motorola's Application Engineering Group.
  •  An early advertisement for the Motorola's M6800 family microcomputer system
  • Three typical applications for the MC6800, as shown in a Motorola advertisement from August 1976: a point-of-sale terminal, an electronic signal tester, and a security card entry system.
  • The M6800 family chips were redesigned to use depletion-mode technology. The MC6820 PIA became the MC6821.
  •  Motorola began making semiconductors in the 1950s.
  • The [[SWTPC 6800]] computer system, introduced in November 1975, was based on the MEK6800 design evaluation kit chip set.
  •  A silicon wafer holding many integrated circuit chips
  • The Tektronix 4051 graphics computing system used a 6800 microprocessor.

Exorciser         
·noun An Exorcist.
Motorola 6800         
<processor> A microprocessor released shortly after the Intel 8080, in about 1975. It had 78 instructions, including the undocumented HCF (Halt and Catch Fire) bus test instruction. The 6800 evolved into the Motorola 6801 and 6803. The 6502 was based on the design of the 6800 but had one less data register and one more index register. (1994-10-31)
Motorola 6801         
FAMILY OF MICROPROCESSORS
M68h; 68h; Motorola 6805; Motorola 6801; M6800 Microcomputer System; M6800 family; 68xx; 68XX; Motorola 68xx
<processor> (And 6803) A version of the Motorola 6800 with ROM, some RAM, a serial I/O port and other functions on the chip. It was meant for embedded controllers, where the part count was to be minimised. The 6803 led to the 68HC11 and that was extended to 16 bits as the 68HC16. (1994-11-07)

Βικιπαίδεια

Motorola 6800

The 6800 ("sixty-eight hundred") is an 8-bit microprocessor designed and first manufactured by Motorola in 1974. The MC6800 microprocessor was part of the M6800 Microcomputer System (latter dubbed 68xx) that also included serial and parallel interface ICs, RAM, ROM and other support chips. A significant design feature was that the M6800 family of ICs required only a single five-volt power supply at a time when most other microprocessors required three voltages. The M6800 Microcomputer System was announced in March 1974 and was in full production by the end of that year.

The 6800 has a 16-bit address bus that can directly access 64 KB of memory and an 8-bit bi-directional data bus. It has 72 instructions with seven addressing modes for a total of 197 opcodes. The original MC6800 could have a clock frequency of up to 1 MHz. Later versions had a maximum clock frequency of 2 MHz.

In addition to the ICs, Motorola also provided a complete assembly language development system. The customer could use the software on a remote timeshare computer or on an in-house minicomputer system. The Motorola EXORciser was a desktop computer built with the M6800 ICs that could be used for prototyping and debugging new designs. An expansive documentation package included datasheets on all ICs, two assembly language programming manuals, and a 700-page application manual that showed how to design a point-of-sale terminal (a computerized cash register) around the 6800.

The 6800 was popular in computer peripherals, test equipment applications and point-of-sale terminals. It also found use in arcade games and pinball machines. The MC6802, introduced in 1977, included 128 bytes of RAM and an internal clock oscillator on chip. The MC6801 and MC6805 included RAM, ROM and I/O on a single chip and were popular in automotive applications. The Motorola 6809 was an updated compatible design.