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95-462: The first commercially sold portable computer might be the 20-pound (9.1 kg) MCM/70 , released 1974. The next major portables were the 50-pound (23 kg) IBM 5100 (1975), Osborne 's 24-pound (11 kg) CP/M -based Osborne 1 (1981) and Compaq 's 28-pound (13 kg), advertised as 100% IBM PC compatible Compaq Portable (1983). These luggable computers still required a continuous connection to an external power source; this limitation

190-461: A floppy disk controller could load data into memory without requiring any support from the CPU. It was even possible to have two 6800 processors access the same memory. However, in practice systems of such complexity usually required the use of external bus transceivers to drive the system bus; in such circuits, the on-processor bus control was disabled entirely in favor of using the similar capabilities of

285-492: A "5-V single-supply n-channel technology" operating at 1 MHz. They could simulate a 50 MOSFET circuit on an IBM 370/165 mainframe computer. In November 1975, Lattin joined Intel to work on their next generation microprocessor. Bill Mensch joined Motorola in 1971 after graduating from the University of Arizona. He had worked several years as an electronics technician before earning his BSEE degree. The first year at Motorola

380-472: A 16-bit one. The second accumulator was omitted. The address buffers did not have a three-state mode for Direct Memory Access (DMA) data transfers. The goal was to get the chip size down to 153 mils x 168 mils ( 3.9 mm ×  4.3 mm ). Peddle was a very effective spokesman and the MOS Technology microprocessors were extensively covered in the trade press. One of the earliest was a full-page story on

475-543: A 2 KB ROM, a 16-bit timer, 31 programmable parallel I/O lines, and a serial port. (The MC6803 was the same except without the ROM and with fewer different bus configurations.) It could also use the I/O lines as data and address buses to connect to standard M6800 peripherals. The 6801 would execute 6800 code, but it had ten additional instructions, and the execution time of key instructions was reduced. The two 8-bit accumulators could act as

570-478: A 32-character screen, a floppy disk: capacity = 140 000 characters, of a thermal printer: speed = 28 characters / sec, an asynchronous channel, a synchronous channel, a 220 V power supply. Designed for an operating temperature of 15–35 °C (59–95 °F), it weighed 12 kilograms (26 lb) and its dimensions were 45 cm × 45 cm × 15 cm (17.7 in × 17.7 in × 5.9 in). It provided total mobility. Its operating system

665-514: A 6800 computer system that allowed the user to examine the contents of RAM and to save or load programs to tape. This 512 byte program occupied half of an MCM6830 ROM. This ROM was used in the Motorola MEK6800 design evaluation kit and early hobby computer kits. Wiles stayed with Motorola, moved to Austin and helped design the MC6801 microcontroller that was released in 1978. Chuck Peddle joined

760-455: 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 has also been used 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

855-470: A French record label established by Jacques and Marcelle Morgantini Science [ edit ] Medical countermeasure (MCM), products that can protect from the effects of a chemical, biological, or nuclear attack Minichromosome maintenance protein, which forms DNA helicase in eukaryotic species Mobil Composition of Matter or Mobil Crystalline Material, a family of porous silicate-based materials Macrocephaly-capillary malformation (M-CM),

950-449: A MC6800 socket and Bill Mensch did the MCS6502 that had the clock generation circuit on chip. These microprocessors would not run 6800 programs because they had a different architecture and instruction set. The major goal was a microprocessor that would sell for under $ 25 . This would be done by removing non-essential features to reduce the chip size. An 8-bit stack pointer was used instead of

1045-406: A Motorola 6800 socket and licensing Motorola's peripheral chips. Motorola reduced the single-unit price of the 6800 to $ 35 . The MOS Technology vs. Motorola lawsuit has developed a David and Goliath narrative over the years. One point was that Motorola did not have patents on the technology. This was technically true when the lawsuit was filed in late 1975 On October 30, 1974, before the 6800

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1140-583: A charity in Australia Mid-Century modern , an architectural, interior and product design form Mighty Car Mods , a YouTube show about modifying cars Roman numeral for 1900 Montreal Citizens' Movement , a municipal political party in Montreal, Quebec, Canada Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title MCM . If an internal link led you here, you may wish to change

1235-534: A former Christian ministry in the U.S. Mathematical Contest in Modeling , challenges teams of students to clarify, analyze, and propose solutions to open-ended problems M-C-M' , Money-Commodity-Money, one of the forms of commodity trade in the theory of Karl Marx MCM London Comic Con , a multi-genre fan convention held in London MCM Worldwide , leather luxury goods brand Melbourne City Mission ,

1330-488: A group that examined the needs of their existing customers such as Hewlett-Packard , National Cash Register , Control Data Corporation (CDC), and Digital Equipment Corporation (DEC). They would study the customer's products and try to identify functions that could be implemented in larger integrated circuits at a lower cost. The result of the survey was a family of 15 building blocks; each could be implemented in an integrated circuit. Some of these blocks were implemented in

1425-496: A laptop or other mobile computing device , have a standard motherboard or backplane providing plug-in slots for add-in cards. This allows mission specific cards such as test, A/D, or communication protocol (IEEE-488, 1553) to be installed. Portable computers also provide for more disk storage by using standard disk drives and provide for multiple drives. In 1973, the IBM Los Gatos Scientific Center developed

1520-994: A maximum rate of 1 MHz. Higher-speed versions of the 6800 were released in 1976. Other divisions in Motorola developed components for the M6800 family. The Components Products Department designed the MC6870 two-phase clock IC, and the Memory Products group provided a full line of ROMs and RAMs. The CMOS group's MC14411 Bit Rate Generator provided a 75 to 9600 baud clock for the MC6850 serial interface. The buffers for address and data buses were standard Motorola products. Motorola could supply every IC, transistor, and diode necessary to build an MC6800-based computer. The first-generation metal–oxide–semiconductor (MOS) chips used p-channel field-effect transistors, known as p-channel MOSFETs (p-channel describes

1615-411: A memory designer at Motorola when Bennett asked him to design a voltage doubler for the 6800. Typical n-channel MOS IC's required three power supplies: −5 volts, +5 volts and +12 volts. The M6800 family was to use only one, +5 volts. It was easy to eliminate the −5 volt supply by using an internal voltage inverter , but the enhancement-mode logic also needed a supply of 10 to 12 volts. To address this,

1710-540: A portable computer prototype called SCAMP (Special Computer APL Machine Portable) based on the IBM PALM processor with a Philips compact cassette drive, small CRT and full function keyboard. SCAMP emulated an IBM 1130 minicomputer in order to run APL\1130. In 1973, APL was generally available only on mainframe computers, and most desktop sized microcomputers such as the Wang 2200 or HP 9800 offered only BASIC . Because SCAMP

1805-440: A prototype and did not enter production. Successful demonstrations of the 1973 SCAMP prototype led to the first commercial IBM 5100 portable microcomputer launched in 1975. The product incorporated an IBM PALM processor , 5-inch (130 mm) CRT, full function keyboard and the ability to be programmed in both APL and BASIC for engineers, analysts, statisticians and other business problem-solvers. (IBM provided different models of

1900-811: A rare genetic syndrome Methylmalonyl-coenzyme A mutase , an enzyme the Monte Carlo method Military [ edit ] MCM pistol , a 25-meter Standard Pistol Mine Counter-measures , defensive techniques against military mines Manual for Courts-Martial , the official guide to the conduct of courts-martial in the United States Marine Corps Marathon , a 26-mile marathon held in Arlington, VA and Washington, DC A US Navy hull classification symbol: Mine countermeasures ship (MCM) Technology [ edit ] Micro Computer Machines, an early manufacturer of microcomputers, such as

1995-473: A resistor capacitor network. Another project was incorporating 128 bytes of RAM and the clock generator on a single 11,000-transistor chip. The MC6802 microprocessor was released in March 1977. The companion MC6846 chip had 2048 byte ROM, an 8-bit bidirectional port and a programmable timer. This was a two-chip microcomputer. The 6802 has an on-chip oscillator that uses an external 4 MHz quartz crystal to produce

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2090-421: A side. The target size for the 6800 was 180 mils (4.6 mm) on each side but the final size was 212 mils (5.4 mm) with an area of 29.0 mm . At 180 mils, a 3-inch (76 mm) wafer will hold about 190 chips, 212 mils reduces that to 140 chips. At this size the yield may be 20% or 28 chips per wafer. The Motorola 1975 annual report highlights the new MC6800 microprocessor but has several paragraphs on

2185-422: A single 16-bit accumulator for double precision addition, subtraction and multiplication. It was initially designed for automotive use, with General Motors as the lead customer. The first application was a trip computer for the 1978 Cadillac Seville. This 35,000 transistor chip was too expensive for wide-scale adoption in automobiles, so a reduced function MC6805 single-chip microcomputer was designed. The MC6801

2280-523: A single chip and were popular in automotive applications. Some MC6805 models integrated a Serial Peripheral Interface (SPI). The Motorola 6809 was an updated compatible design. Galvin Manufacturing Corporation was founded in 1928; the company name was changed to Motorola in 1947. They began commercial production of transistors at a new US$ 1.5 million facility in Phoenix, Arizona in 1955. By

2375-662: A single flexible microprocessor design. A new effort began in late 1971, but in early 1972, the marketing department returned a report stating they could only sell 18,000 over a five year period. Unconvinced, Bennett hired Link Young to try again. Young returned with a potential order for 200,000 from National Data Corporation , more than enough to start design work. The team was composed of designer Tom Bennett, engineering director Jeff LaVell, product marketer Link Young and systems designers Mike Wiles, Gene Schriber and Doug Powell. They were all located in Mesa, Arizona , in greater Phoenix . By

2470-440: A single microprocessor at $ 360 . Many customers were hesitant to adopt this new microprocessor technology with such a high price tag. (The actual price for production quantities was much lower.) In mid-1974 Peddle proposed a simplified microprocessor that could be sold at a much lower price. Motorola's "total product family" strategy did not focus on the price of MPU but on reducing the customer's total design cost. Peddle's concept

2565-514: A small semiconductor company in Pennsylvania, MOS Technology. He was followed by seven other Motorola engineers: Harry Bawcom, Ray Hirt, Terry Holdt, Mike James, Will Mathis, Bill Mensch and Rod Orgill. Peddle's group at MOS Technology developed two new microprocessors that were compatible with the Motorola peripheral chips like the 6820 PIA. Rod Orgill designed the MCS6501 processor that would plug into

2660-403: A software and hardware development system. The software development tools were available on remote time-sharing computers or the source code was available so the customer could use an in-house computer system. The software that would run on a microprocessor system was typically written in assembly language. The development system consisted of a text editor, assembler and a simulator. This allowed

2755-844: A two-page story on the Motorola MC6800 microprocessor along with the MC6820 Peripheral Interface Adapter, the MC6850 Asynchronous Communications Interface Adapter, the MCM6810 128 byte RAM and the MCM6830 1024 byte ROM. This was followed by an eight-page article in the April 18, 1974 issue, written by the Motorola design team. This issue also had an article introducing the Intel 8080. Both the Intel 8080 and

2850-492: Is about the size and weight of a sewing machine, and was advertised as the only computer that would fit underneath an airline seat . Another early portable computer released in 1982 was named the Kaypro II , although it was the company's first commercially available product. Some of the press mocked its design—one magazine described Kaypro Corporation as "producing computers packaged in tin cans". Others raved about its value, as

2945-513: Is still emulated as the baseline functionality of most modern PC video adapter chips) incorporates a compatible near-superset of the EGA CRTC, still mostly-compatible with the MC6845 (but by this point without the light pen support, which the EGA CRTC retained). The MC6801 was a single-chip microcomputer (that today would also be called a microcontroller) incorporating a 6802 CPU with 128 bytes of RAM,

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3040-468: Is unknown but ADD instructions are documented as taking 16μs, i.e. ~62k ADD/s. MCM [REDACTED] Look up mcm in Wiktionary, the free dictionary. MCM may refer to: Measurements [ edit ] Thousand circular mils or kcmil, the wire gauge is equivalent cross sectional area (500 MCM = 500,000 circular mils) Million cubic metre ,

3135-526: The Intel 4004 to see if it would meet their calculator needs. Bennett joined Motorola in 1971 to design calculator ICs. He was soon assigned as the chief architect of the microprocessor project that produced the 6800. Others have taken credit for designing the 6800. In September 1975 Robert H. Cushman , EDN magazine's microprocessor editor, interviewed Chuck Peddle about MOS Technology's new 6502 microprocessor. Cushman then asked "Tom Bennett, master architect of

3230-554: The MCM/70 Microsoft Certified Master Mobile content management , software capable of storing and delivering content to mobile devices Multi Carrier Modulation Multi-chip module , a specialized electronic package Transportation [ edit ] Monaco Heliport 's IATA code PABCO Transit, Inc or Morris County Metro, a bus system formerly serving Morris County, New Jersey Other [ edit ] Maranatha Campus Ministries ,

3325-449: The zero page in other processors, allowed fast access to the first 256 bytes of memory. I/O devices were addressed as memory so there were no special I/O instructions. When the 6800 was reset, it loaded the program counter from the highest address and started execution at the memory location stored there. The 6800 had a three-state control that would disable the address bus to allow another device direct memory access . For instance,

3420-597: The "MOS yield problems." The yield problem was solved with a design revision started in 1975 to use depletion mode in the M6800 family devices. The 6800 die size was reduced to 160 mils (4 mm) per side with an area of 16.5 mm . This also allowed faster clock speeds, the MC68A00 would operate at 1.5 MHz and the MC68B00 at 2.0 MHz. The new parts were available in July 1976. The March 7, 1974 issue of Electronics had

3515-671: The "portable" Hyperion Computer System. Both Eagle Computer and Columbia were sued by IBM for copyright infringement of its BIOS. They settled and were forced to halt production. Neither the Columbia nor the Eagle were nearly as IBM PC DOS compatible as Compaq's offerings. The first full-color portable computer was the Commodore SX-64 in January 1984.. Originally announced in 1987, the Atari STacy

3610-458: The 5100 supporting only BASIC, only APL, or both selectable by a physical switch on the front panel.) IBM referred to its PALM processor as a microprocessor , though they used that term to mean a processor that executes microcode to implement a higher-level instruction set , rather than its conventional definition of a complete processor on a single silicon integrated circuit ; the PALM processor

3705-510: The 6800 family. Motorola's n-channel MOS test integrated circuits were complete in late 1971 and these indicated the clock rate would be limited to 1 MHz. These used " enhancement-mode " MOS transistors. There was a newer fabrication technology that used " depletion-mode " MOS transistors as loads, which would allow smaller and faster circuits (this was also known as depletion-load nMOS ). The "depletion-mode" processing required extra steps so Motorola decided to stay with "enhancement-mode" for

3800-421: The 6800", to comment about this new competitor. After the 6800 project Bennett worked on automotive applications and Motorola became a major supplier of microprocessors used in automobiles. Jeff LaVell joined Motorola in 1966 and worked in the computer industry marketing organization. LaVell had previously worked for Collins Radio on their C8500 computer that was built with small scale ECL ICs. In 1971, he led

3895-545: 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

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3990-585: The M6800 family was complete in mid-1974, and many engineers left the group or the company. Several factors led to the break-up of the design group. Motorola had opened a new MOS semiconductor facility in Austin, Texas. The entire engineering team was scheduled to relocate there in 1975. Many of the employees liked living in the Phoenix suburb of Mesa and were very wary about moving to Austin. The team leaders were unsuccessful with their pleas to senior management on deferring

4085-580: The M6800 family were also redesigned to use depletion-mode technology. The Peripheral Interface Adapter had a slight change in the electrical characteristics of the I/O pins so the MC6820 became the MC6821. These new IC were completed in July 1976. A new low-cost clock generator chip, the MC6875, was released in 1977. It replaced the $ 35 MC6870 hybrid IC. The MC6875 came in a 16-pin dip package and could use quartz crystal or

4180-458: The MC6800 for a new desktop calculator and had a prototype system working by June. The MC6800 used a new single-voltage N-channel MOS process that proved to be very difficult to implement. The M6800 microcomputer system was finally in production by November 1974. Motorola matched Intel's price for single microprocessor, $ 360. (The IBM System/360 was a well-known computer at this time.) In April 1975

4275-449: The MC6800 microprocessor. The MC6845 CRT Controller (CRTC) provided the control logic for a character based computer terminal. The 6845 had support for a light pen , an alternative to a computer mouse. The MC6845 was a very popular chip: it was even used in the original IBM Monochrome Display Adapter and the original IBM Color Graphics Adapter for the IBM PC and successors, where the 6845

4370-614: The MCS6501 and MCS6502 microprocessors in the July 24, 1975 issue of Electronics magazine. Stories also ran in EE Times (August 24, 1975), EDN (September 20, 1975), Electronic News (November 3, 1975) and Byte (November 1975). Advertisements for the 6501 appeared in several publications the first week of August 1975. The 6501 would be for sale at the WESCON trade show in San Francisco, September 16–19, 1975, for $ 20 each. In September 1975

4465-469: The MEK6800D1 microcomputer design kit was offered for $ 300. The kit included all six chips in the M6800 family plus application and programming manuals. The price of a single MC6800 microprocessor was $ 175. Link Young was the product marketer that developed the total system approach for the M6800 family release. In addition to releasing a full set of support chips with the 6800 microprocessor, Motorola offered

4560-619: The MIT Digital Systems Laboratory as a thesis project, it never entered production. It is currently in the collection of Dr. Hoo-Min D. Toong. An early portable computer was manufactured in 1979 by GM Research, a small company in Santa Monica, California. The machine which was designed and patented by James Murez. It was called the Micro Star and later the name was changed to The Small One. Although Xerox claims to have designed

4655-581: The Motorola MC6800 processors began layout around December 1972. The first working 8080 chips were produced January 1974 and the first public announcement was in February 1974. The 8080 used same three voltage N-channel MOS process as Intel's existing memory chips allowing full production to begin that April. The first working MC6800 chips were produced in February 1974 and engineering samples were given to select customers. Hewlett-Packard in Loveland, Colorado wanted

4750-471: The advertisements included both the 6501 and the 6502 microprocessors. The 6502 would only cost $ 25 . Motorola responded to MOS Technology's $ 20 microprocessor by immediately reducing the single-unit price of the 6800 microprocessor from $ 175 to $ 69 and then suing MOS Technology in November 1975. Motorola claimed that the eight former Motorola engineers used technical information developed at Motorola in

4845-454: The bus transceiver. In contrast, the 6802 dispensed with this on-chip control entirely in order to free up pins for other functions in the same 40-pin package as the 6800, but this functionality could still be achieved using an external bus transceiver. MOS ICs typically used dual clock signals (a two-phase clock ) in the 1970s. These were generated externally for the 6800, The 6800 had a minimum clock rate of 100 kHz, and initially ran at

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4940-536: The company advertised the Kaypro II as "the $ 1,595 computer that sells for $ 1,595 ", some noting that the included software bundle had a retail value over $ 1,000 by itself, and by mid-1983 the company was selling more than 10,000 units a month, briefly making it the fifth-largest computer maker in the world. It managed to correct most of the Osborne 1 's deficiencies: the screen was larger and showed more characters at once,

5035-575: The computer simulation tools for characterizing the new MOS circuits in the 6800. Lattin and Frank Jenkins had both attended UC Berkeley and studied computer circuit simulators under Donald Pederson , the designer of the SPICE circuit simulator. Motorola's simulator, MTIME, was an advanced version of the TIME circuit simulator that Jenkins had developed at Berkeley. The group published a technical paper, "MOS-device modeling for computer implementation" in 1973 describing

5130-593: The configuration of the transistor). These ICs were used in calculators and in the first microprocessor, the Intel 4004. They were easy to produce but were slow and difficult to interface to the popular TTL digital logic ICs. An n-channel MOS integrated circuit could operate two or three times faster and was compatible with TTL. They were much more difficult to produce because of an increased sensitivity to contamination that required an ultra clean production line and meticulous process control. Motorola did not have an n-channel MOS production capability and had to develop one for

5225-488: The design added an on-chip voltage doubler. Buchanan did the circuit design, analysis and layout for the 6800 microprocessor. He received patents on the voltage doubler and the 6800 chip layout. Rod Orgill assisted Buchanan with analyses and 6800 chip layout. Later Orgill would design the MOS Technology 6501 microprocessor that was socket compatible with the 6800. Bill Lattin joined Motorola in 1969 and his group provided

5320-399: The design of the 6501 and 6502 microprocessors. MOS Technology's other business, calculator chips, was declining due to a price war with Texas Instruments so their financial backer, Allen-Bradley , decided to limit the possible losses and sold the assets of MOS Technology back to the founders. The lawsuit was settled in April 1976 with MOS Technology dropping the 6501 chip that would plug into

5415-429: The design team in 1973 after the 6800 processor design was done but he contributed to overall system design and to several peripheral chips, particularly the 6820 (PIA) parallel interface. Peddle is listed as an inventor on sixteen Motorola patents, most have six or more co-inventors. Like the other engineers on the team, Peddle visited potential customers and solicited their feedback. Peddle and John Buchanan built one of

5510-471: The developer to test the software before the target system was complete. The hardware development was a desktop computer built with M6800 family CPU and peripherals known as the EXORcisor. Motorola offered a three- to five-day microprocessor design course for the 6800 hardware and software. This systems-oriented approach became the standard way new microprocessor were introduced. The principal design effort on

5605-402: The division but they did change the management and organization. By the end of 1974 Intel fired almost a third of its 3,500 employees. The MOS IC business rebounded but job security was not taken for granted in 1974 and 1975. Chuck Peddle (and other Motorola engineers) had been visiting customers to explain the benefits of microprocessors. Both Intel and Motorola had initially set the price of

5700-404: The earliest 6800 demonstration boards. In August 1974, Chuck Peddle left Motorola and joined a small semiconductor company in Pennsylvania, MOS Technology . There he led the team that designed the 6500 microprocessor family. The Motorola 6800 and the Intel 8080 were designed at the same time and were similar in function. The 8080 was an extension and enhancement of the Intel 8008, which in turn

5795-422: The effort, the hired Bennett away from Victor. Shortly after joining, Olivetti visited Motorola with a outline of a design for a microprocessor they were planning to use in a series of programmable calculators. Motorola agreed to complete the design and produce it on their PMOS lines in Phoenix. While the design was eventually completed successfully, their fab proved unable to produce the chips. The problems with

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5890-464: The first such system, the machine by Murez predated anything on the market or that had been documented in any publication at the time – hence the patent was issued. As early as 1979, the U.S. Government was contracting to purchase these machines. Other major customers included Sandia Labs, General Dynamics, BBN (featured on the cover of their annual report in 1980 as the C.A.T. system) and several dozen private individuals and companies around

5985-473: The floppy drives stored over twice as much data, the case was more attractive-looking, and it was also much better-built and more reliable. The Grid Compass ran its own operating system, GRiD-OS. Its specialized software and high price (US$ 8,000–10,000) meant that it was limited to specialized applications. The main buyer was the U.S. government. NASA used it on the Space Shuttle during the early 1980s, as it

6080-401: The initial M6800 release and more were added over the next few years. To evaluate the 6800 architecture while the chip was being designed, LaVell's team built an equivalent circuit using 451 small scale TTL ICs on five 10 by 10 inch (25 by 25 cm) circuit boards. Later they reduced this to 114 ICs on one board by using ROMs and MSI (medium scale integration) logic devices. John Buchanan was

6175-501: The initial concept of what would become the Intel 4004 , and on their sales trips they visited Victor Comptometer in Chicago looking for potential customers. Victor had introduced the world's first electronic calculator that used integrated circuits , the Victor 3900 . There, Tom Bennett saw the design. In 1971, Motorola decided to enter the calculator business. Looking for someone to lead

6270-402: The length and width of each chip in "mils" (0.001 inch). The current industry practice is to state the chip area. Processing wafers required multiple steps and flaws would appear at various locations on the wafer during each step. The larger the chip the more likely it would encounter a defect. The percentage of working chips, or yield, declined steeply for chips larger than 160 mils (4 mm) on

6365-556: The line had become obvious with a number of similar failures; it also proved unable to make competitive memory devices and other designs. To save the contract, Motorola licensed the design to their competitor, Mostek , with the requirement that Mostek could only sell outside the calculator market. Mostek then put the design on the market as the Mostek 5065 . Customers continued to approach the company with new ideas, and it became increasingly obvious that these concepts could be implemented using

6460-503: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=MCM&oldid=1188857957 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Motorola 6800 The 6800 (" sixty-eight hundred ") is an 8-bit microprocessor designed and first manufactured by Motorola in 1974. The MC6800 microprocessor

6555-521: The mid-1960s, Motorola had expanded their semiconductor division under the direction of Lester Hogan. Motorola's transistors and integrated circuits were used in-house for their communication, military, automotive and consumer products and they were also sold to other companies. In 1968, Robert Noyce left Fairchild Semiconductor to found Intel , and Fairchild responded by hiring Hogan as the new CEO . Eight other Motorola employees moved with him, they became known as " Hogan's heroes ". The resulting chaos

6650-477: The move. A recession hit the semiconductor industry in mid-1974 resulting in thousands of layoffs. A November 1974 issue of Electronics magazine reports that Motorola had laid off 4,500 employees, Texas Instruments 7,000 and Signetics 4,000. Motorola's Semiconductor Products Division would lose thirty million dollars in the next 12 months and there were rumors that the IC group would be sold off. Motorola did not sell

6745-471: The new single-supply-voltage design. The 1 MHz clock rate meant the chip designers would have to come up with several architectural innovations to speed up the microprocessor throughput. These resulting circuits were faster but required more area on the chip. In the 1970s, semiconductors were fabricated on 3 inch (75 mm) diameter silicon wafers . Each wafer could produce 100 to 200 integrated circuit chips or dies. The technical literature would state

6840-559: The next ten years before he was promoted to a vice president.) The first task was to redesign the 6800 MPU to improve the manufacturing yield and to operate at a faster clock. This design used depletion-mode technology and was known internally as the MC6800D. The transistor count went from 4000 to 5000 but the die area was reduced from 29.0 mm to 16.5 mm (allowing the price of the CPU to be lowered to $ 35). The maximum clock rate for selected parts doubled to 2 MHz. The other chips in

6935-416: The peripheral chips interfaced with the microprocessor. Gary Daniels was designing ICs for electronic wristwatches when Motorola shut down their Timepiece Electronics Unit. Tom Bennett offered him a job in the microprocessor group in November 1974. Bennett did not want to leave the Phoenix area so Gary Daniels managed the microprocessor development in Austin. (Daniels was the microprocessor design manager for

7030-452: The time the project was finished, Bennett had 17 chip designers and layout people working on five chips. LaVell had 15 to 20 system engineers and there was another applications engineering group of similar size. Tom Bennett had a background in industrial controls and had worked for Victor Comptometer in the 1960s designing the first electronic calculator to use MOS ICs, the Victor 3900 . In May 1969 Ted Hoff showed Bennett early diagrams of

7125-647: The two-phase 1 MHz clock. The internal 128 byte RAM could be disabled by grounding a pin and devices with defective RAM were sold as a MC6808. The 6808 was rarely used as the main microprocessor on general-purpose computers, being more popular in embedded systems (the 1979 ACFA-8 microcomputer proved an exception). A series of peripheral chip were introduced by 1978. The MC6840 programmable counter had three 16-bit binary counters that could be used for frequency measurement, event counting, or interval measurement. The MC6844 Direct Memory Access Controller could transfer data from an I/O controller to RAM without loading down

7220-553: The unit of volume Music [ edit ] Magic Circle Music , a heavy metal record label Magic City Misfits , a roller derby team from Jacksonville, FL Maverick City Music , a contemporary christian group MCM (TV channel) , a French music channel Music City Mystique , a Percussion Independent World (PIW) Drumline The Mad Capsule Markets , a Japanese punk-metal band MCM – The Gospel: The Missing Gems of MCM Caveman (1994-2011) (Mark Layman), rapper and former frontman for UK hip-hop group Caveman MCM Records,

7315-716: The world. In 1979, Adam Osborne viewed the machine along with several hundred other visitors at the first computer show that was sponsored by the IEEE Westec in Los Angeles. Later that year the machine was also shown at the first COMDEX show. The portable micro computer; the " Portal " of the French company R2E Micral CCMC officially appeared in September 1980 at the Sicob show in Paris. The Portal

7410-511: Was Prolog . A few hundred were sold between 1980 and 1983. The first mass-produced microprocessor-based portable computer released in 1981 was the Osborne 1 , developed by Osborne, which owed much to the NoteTaker's design. The company had early success with the design and went public but later due to small screen sizes and other devices being released found trouble selling the Osborne. The Osborne 1

7505-452: Was a large circuit board populated with over a dozen chips. In the late 1960s, such a machine would have been nearly as large as two desks and would have weighed about half a ton (0.45 t). In comparison, the IBM 5100 weighed about 53 pounds (24 kg and very portable for that time). The MIT Suitcase Computer, constructed in 1975, was the first known microprocessor-based portable computer. It

7600-409: Was a portable microcomputer designed and marketed by the studies and developments department of the French firm R2E Micral in 1980 at the request of the company CCMC specializing in payroll and accounting. The Portal was based on an intel 8085 processor, 8-bit, clocked at 2 MHz. It was equipped with a central 64 KB RAM, a keyboard with 58 alpha numeric keys and 11 numeric keys (separate blocks),

7695-414: Was a series of three-month rotations through four different areas. Mensch did a flowchart for a modem that would become the 6860. He also worked the application group that was defining the M6800 system. After this training year, he was assigned to the 6820 Peripheral Interface Adapter (PIA) development team. Mensch was a major contributor to the design of this chip and received a patent on the IC layout and

7790-655: Was an LSI implementation of the TTL -based CPU design used in the Datapoint 2200 . The 6800 architecture was a TTL-compatible LSI design modeled after the DEC PDP-11 processor. The 6800 had an 8-bit bidirectional data bus, a 16-bit address bus that could address 64 KB of memory, and came in a 40-pin DIP package. The 6800 had two 8-bit accumulators, a 16-bit index register, and a 16-bit stack pointer. The direct addressing mode, often known as

7885-454: Was based on the Motorola 6800 . Constructed in a Samsonite suitcase approximately 20 by 30 by 8 inches (510 mm × 760 mm × 200 mm) and weighing approximately 20 lb (9.1 kg), it had 4K of SRAM, a serial port to accept downloaded software and connect to a modem, a keyboard and a 40-column thermal printer taken from a cash register. Built by student David Emberson in

7980-409: 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

8075-888: Was later overcome by the laptop computers . Laptops were followed by lighter models such as netbooks , so that in the 2000s mobile devices and by 2007 smartphones made the term "portable" rather meaningless. The 2010s introduced wearable computers such as smartwatches . Portable computers, by their nature, are generally microcomputers . Larger portable computers were commonly known as 'Lunchbox' or 'Luggable' computers. They are also called 'Portable Workstations' or 'Portable PCs'. In Japan they were often called 'Bentocom'. ( ベントコン , Bentokon ) from " bento ". Portable computers, more narrowly defined, are distinct from desktop replacement computers in that they usually were constructed from full-specification desktop components, and often do not incorporate features associated with laptops or mobile devices. A portable computer in this usage, versus

8170-464: Was named as a co-inventor of seven other M6800 system patents. Later Mensch would design the MOS Technology 6502 microprocessor. Mike Wiles was a design engineer in Jeff LaVell's group and made numerous customer visits with Tom Bennett during 6800 product definition phase. He is listed as an inventor on eighteen 6800 patents but is best known for a computer program, MIKBUG . This was a monitor for

8265-528: Was nevertheless short lived, and the company continued to grow through this period. By 1973 the Semiconductor Products Division (SPD) had sales of $ 419 million and was the second largest semiconductor company after Texas Instruments . By the early 1970s it was clear that most of the large companies in the semiconductor space, including Fairchild and the still-new Intel, were planning to introduce microprocessors . Intel began shopping around

8360-517: Was one of the first microprocessors with a multiply instruction. The Hitachi HD6303 (not to be confused with the Hitachi 6309 ) is a second-source reimplementation of the Motorola MC6803, with a few additional instructions, and a slightly faster implementation of the 8x8 multiply instruction. The Hitachi HD6303 is used in the first PDA, the 1984 Psion Organiser . The Hitachi HD6303 was also used in

8455-469: Was part of the M6800 Microcomputer System (later 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

8550-518: Was powerful, lightweight, and compact. The military Special Forces also purchased the machine, as it could be used by paratroopers in combat. Although Columbia Data Product 's MPC 1600, "Multi Personal Computer" came out in June 1983, one of the first extensively IBM PC compatible computers was the Compaq Portable . Eagle Computer then came out with their offering. and Corona Data Systems 's PPC-400.,

8645-897: Was released to the public in December 1989 and was one of the first laptop-like portables. Apple Inc. introduced and released the Macintosh Portable in 1989, though this device came with a battery, which added to its substantial weight. The Portable has features similar to the Atari STacy , include integrated trackball and clamshell case. After release of IBM PC Convertible in 1986, IBM still produced classic portable computers, include released in 1989 PS/2 P70 (with upgrade in 1990 to P75 ), and IBM produce portables for up to release of PS/2 Note and PS/55note notebook lines. In today's world of laptops, smart phones, and tablets, portable computers have evolved and are now mostly used for industrial, commercial or military applications. Clock speed

8740-418: Was released, Motorola filed numerous patents applications on the microprocessor family, and over twenty patents were subsequently granted. The first was to Tom Bennett on June 8, 1976, for the 6800 internal address bus. The second was to Bill Mensch on July 6, 1976, for the 6820 chip layout. Many of these patents named several of the departing engineers as co-inventors. These patents covered the 6800 bus and how

8835-515: Was repeatedly rejected, and eventually management told him to stop talking about it. He wrote a memo stating that these instructions were a clear statement that Motorola was abandoning the concept, meaning they could not claim intellectual property against it. Peddle continued working for Motorola while looking for investors for his new microprocessor concept. After approaching Mostek and being rejected, in August 1974 Chuck Peddle left Motorola and joined

8930-487: Was the first to emulate APL\1130 performance on a portable, single user computer, PC Magazine in 1983 designated SCAMP a "revolutionary concept" and "the world's first personal computer". The engineering prototype is in the Smithsonian Institution . Xerox NoteTaker , developed in 1976 at Xerox PARC , was a precursor to later portable computers from Osborne Computer Corporation and Compaq , though it remained

9025-505: Was used with an Intel 8088 CPU. During the time of cold war technology embargoes, a 6845 clone named CM607 was produced in Bulgaria. The later IBM Enhanced Graphics Adapter (EGA) card contained a custom IBM chip (the EGA CRTC) that replaced the Motorola 6845, adding many enhancements, in a mostly-compatible way. The IBM Video Graphics Array (VGA), which became ubiquitous (to the point that it

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