The motorola 6800 and the intel 8080 were designed at the same time and. Intel 8080 assembler in a fit of recreational programming, i wrote this 8080 assembler. In july of 1976, it released the z80 processor, which was a. Intel 8080 was the second 8bit microprocessor in1974, enhanced version. Tft lcd interfacing with the highdensity stm32f10xxx fsmc. The output from microprocessor 32 is coupled to display controller 42 which includes a seven segment encoder, a multiplexer and a scanner. The 8008 was the precursor to the very successful intel 8080 1974, which offered much improved performance over the 8008 and required fewer support chips, zilog z80 1976, and derivative intel 8bit processors. The 8086 is one of the most powerful and versatile 16bit microprocessors available, and it has been widely adopted by industry. The information enters in a binary form, while the executions of instructions are stored in memory. Intel 8080 microcomputer systems users manual september 1975, 262 pages intel 8080. If the introduction of the intel 8008 led to a variety of interesting devices that can be considered the first early pcs, it was. Designed by chuck peddle and a small team that spun off motorola and joined. Ar103d motorola 6809 motorola 6809 instruction set motorola 6809 8 bit instruction set 6809 processor motorola intel 8080 intel 8080 microcomputer systems users manual pdp11 instruction set motorola 6800 micro 6809 intel 8080 microcomputer system users manual.
Nowdays they make a wide variety of processors and microcontrollers. Im assuming this is people outside the intel design office who are prototyping the next cpu. For example, the motorola 6800 and mos technology 6502 processor families treat the first 256 bytes of memory specially, whereas many other processors do not. Welcome to the video history of the mcs80, or the 8080. The 6800 architecture was modeled after the dec pdp11 processor. The motorola 6800 family of processors used a parallel bus that had a single rw line to indicate whether a cycle was read or write, and a separate e enable strobe to indicate that a cycle was occurring. An10880 using the lcd interface in the lpc3xlpc314x. Microprocessors, instrumentation and control sciencedirect. Unlike the intel 8080, the motorola 6800 uses memorymapped io. Shortly after the launch of the 8080, the motorola 6800 competing design was introduced, and after that, the mos technology 6502. Introduction to embedded systems and computer architecture ee599. The result was the microprocessor, and it ignited the personal computer revolution. First microprocessor at intel in 1971 4004 intel 4004 was a 4 bit up. After the launch of the 6800, several motorola employees left that.
The first part of this chapter describes the assembler. They use many different instruction sets, including ppc, arm, 68000 coldfire, and 8bit and 16bit microcontrollers based on 6800 family. It typically refers to the number of mosfets metaloxidesemiconductor fieldeffect transistors, or mos transistors on an ic chip, as all modern ics use mosfets. We soon had an 8088 board in production that was mostly the same circuitry as the 8080 version. Motorola 6800 is a 8bit microprocessor which was released at about the same time as intel 8080. Four external memory banks are dedicated to the fsmc.
Report on motorola microprocessor assignment point. Motorola who made the 6800 and 68000 were once leader innovators motorola spun off its chip arm into freescale. Pdf comparison of commercially available software tools for. The 8259 programmable interrupt controller vastly extended the 8080 s interrupt system to include priroitization and individual interrupt masking. Apr 18, 2019 electronics and communication engineering. Another technology improvement of this time was ionimplantation to change the characteristics of. At that point it was fortunate that i joined motorola as a product manager for the ecl. The 8080 had more registers which were 16bit but each could be used as two 8bit registers, while the 6800 had fast access to the first 256 bytes of ram and supported direct memory access, which allowed another device such as a disk controller to write data directly to system memory.
Us4245648a method and apparatus for measuring blood. Hello, and welcome to this presentation of the stm32f7. The architecture also inspired the mos technology 6502, and that company initially started business producing 6800 clones. Motorola, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Were people building cpus out of ttl logic prior to the 4004, 8080 and the 6800. Siggraph was the people behind the pixels, and this work is very much in honor of. The intel 8080a is a complete 8bitparallel central processing unit cpu. The client, a japanese company called busicon, declined to buy the chipset and intel, faced with a development cost and no customer, decided to market the chipset as a general purpose microprocessing. Intel am9080apc microprocessor 40pin plastic dip introduced in 1974, the 8080 is intels third microprocessor, and their second 8bit microprocessor. The 8080 was an extension and enhancement of the intel 8008, which in turn was an lsi implementation of the ttlbased cpu design used in the datapoint 2200. The 6800 sixtyeight hundred is an 8bit microprocessor designed and first manufactured by.
Motorola accused mos technology and chuck peddle of plagiarizing the protected 6800. The original program takes only 3kb or rom and runs on intel 8080, motorola 6800 and mos technology 6502. The intel 8080 family of processors used a parallel bus that, among other things, had separate strobes for read and write cycles. The next section focusses on describing how to connect lcd intel 8080 like and motorola 6800 like interfaces with an stm32f10xxx fsmc. This lcd parallel interface capability makes it easy to build cost. Comparison of commercially available software tools for microprocessor programming. This document contains information on how to program the motorola 68kseries microprocessors in. The 6800 had 16bit address bus and could address up to 64 kb of memory.
Examples of widely used 8bit microprocessors include the intel 8080 8085, zilog z80, and motorola 6800 and 6809. Intel 8080 vs representative subhead to support subject introduction agenda this project compares two widely used microprocessors in late 70s, they are the intel 8080 and motorola 6800. However, the operating frequency of the serial transport. History of the microprocessor and the personal computer. This offers the user a high performance solution to control and processing applications. Microcomputer architecture and programming, wi le y, ne wyork. Intel 8080 oral history computer history museum archive server. Unlike the pmosbased 4004 and 8008, the 8080 is implemented in nmos. Intel s primary competitor, motorola s 6800, also had its share of issues adapting the chip and n. Show the difference between motorola 6800 and intel 8086. Meanwhile, the 6502 was basically a derivative of the mororola 6800.
The emulation is functionally equivalent to a microprocessor system incorporating the following intel devices. They are fully pintopin, software and feature compatible with the. The original program takes only 3kb or rom and runs on intel 8080, motorola 6800. The transistor count is the number of transistors on an integrated circuit ic. The architectures used in the intel 8080 and the motorola 6800 were very different. Th e architecture history of the intel from the 4004 to the 8086, accor ding to the people who participated in the designs. The intel 8088, released july 1, 1979, is a slightly modified chip with an external 8bit data bus allowing the use of cheaper and fewer supporting ics, and is notable as the processor used in the original ibm pc design. A serial interface is also supported, and the output clock can be shifted by 25 %, 50 %, or 75 % in order to comply with the specifications of the lcd controller. It is fabricated on a single lsi chip using intel s nchannelsilicon gate mos process. Dec 29, 2012 at present, various microprocessors are available from different manufacturers. It is an extended and enhanced variant of the earlier 8008 design, although without binary compatibility. Motorola 6800 type bus with that of an intel 8080 type bus. This mode should be used if the display has an integrated display controller and frame buffer.
Exintel engineer federico faggin, who worked on the 8080. Further, the 8259 would allow interrupt service routines to be located anywhere in the memory map by using. The 8080 is an extension of intels original 8008 architecture, and the direct predecessor of the 8085, 8086 and 8088. Pdf the author carries out a comparison of cisc complex instruction set computing and risc reduced instruction set computing. Why did many home computers and consoles of the 80s use a. So if your microcontroller has an 8080 type interface you can connect it without problems. The intel 8080 eightyeighty is the second 8bit microprocessor designed and manufactured.
Now more than 20 years later, we are still using systems based more or less on the design of that first pc. Earlier microcomputers such as the radio shack trs80, the televideo 803, and the kaypro 4 were designed around the z80 microprocessor. In another american company called motorola, they quickly realized what was going on, so they launched 8bit microprocessor 6800. These include the intel 8008, mos technology 6502, motorola 6800, as well as intel 8085. But also a microcontroller without external address. Pdf 21047m 8273 dma controller intel 8080 interface intel 8080 cpu diagram intel 8085 clock 8085 intel sdlc protocol intel 8273 8273. Difference between 8080 and 8085 microprocessor answers.
The original intel x86 processors, the 8080 processor, were 8 bit processors designed with an eye for for applications such as special purpose, small computers cash registers for instance or equipment controllers rather than general purpose computers competitors included the motorola 6800. Introduced in 1974 it was a very good processor, and at the time it did not have a lot of competition, mainly the intel 8080 and 8008. The chips primarily competed against intel s 8bit family of chips such as the 8080, or their relations, the zilog z80 range. The size of a page depends on the context, and the significance of zeropage memory versus higher addressed memory is highly dependent on machine architecture. The external memory space is divided into fixedsize banks of 256 mbytes each. Inexpensive and functionally as powerful as intel 8080 and motorola 6800. After the optimization and verification by manual means, all of the control signal logic. Stm32f103ret7 stmicroelectronics, stm32f103ret7 datasheet. The int057atft uses an ssd1961 controller, whose io can be configured in motorola 6800 mode or intel 8080 mode. Digital integrated circuits the vintage technology association. Mcu arm 32bit 512kb flash 64lqfp online from elcodis, view and download stm32f103ret7 pdf datasheet, embedded microcontrollers specifications.
The motorola 6800 and the intel 8080 were designed at the same time and were similar in function. Intel kept on developing it and in april 1974 it launched 8bit processor called the 8080. The microprocessor allows the processing of numeric data. Microprocessors from 1971 to the present microprocessor. The most common lcd mpu parallel interfaces are of the intel 8080 i80 and motorola 6800 m68 type. The intel 8080 eightyeighty was the second 8bit microprocessor designed and manufactured by intel and was released in april 1974. The motorola 68040 sixtyeightohforty is a 32bit microprocessor from motorola, released in 1990. Ive been working on a glcd driver to a sitronix controller for some time and there are an 8bit parallel example that was sent to me by the factory that is for the 8080. Th e motorola 6800 is the main focus of the book, but it covers the intel 8086, motorola 6809, ti 9900, and zilog z8000.
The 8080 was a superset of the intel 8008 which was based on the datapoint 2200 processor. Electronic engineering also called as electronics and communication engineering ece is basically a combination of science and math applied to practical problems in the area of communications. Paloalto basic also known as tiny basic interpreter less than in 500 lines writen in ruby. Southwest technical products corporation announced its swtpc 6800 computer system in november 1975, and it would go on to be the most successful 6800 based computer. It is the successor to the 68030 and is followed by the 68060. Ebi write operations from the mcu update the frame buffer in the display. From common registers the cpu had only two accumulators and one index register. Amd or advanced micro devices is a company that has been producing semiconductors, microchips, cpus, motherboards, and other types of computer equipment for the last 40 years. Commercially available microprocessors such as the intel 8080 or motorola 6800 are readily adaptable for use in the present invention in a manner well known to those skilled in the art. Although pmos transistors were easier to manufacture initially, nmos transistors are faster, so once nmos could be fabricated reliably, they were a clear win.
To meet these strict size limits, math was purely integer based and it lacked arrays. Bmows instruction set was a close cousin to the 6502s, and so when i started on cpld cpu, i initially intended to try something different. The intel pc architecture is a direct descendent of the 8080. Sorcim, the producer of pascalm and supercalc, has for nearly two years been distributing a family of cross assemblers which run on the 8080 under cpm and generate code for 8080, z80, 6502, 6800, 80868088, and 6809. It is interesting to note that the microprocessor had existed for only 10 years prior to the creation of the pc. The processor chip acting as a master reads or writes data at an external slave device.
For example, the size has grown from 256 x 80 in the pdp 1140 to 5120 x 96 in the vax 11780. In due course the intel 8080 core processor was used for a range of. Although the 6800 and 8080 were designed more or less simultaneously, they had some different goals. The 8080a contains 6 8bitgeneral purpose working registers and an accumulator.
The second part describes the features of the 8080 micro processor from a programmers point of view. History of the microprocessor and the personal computer, part 2. The motorola mc6800 was motorola s first full 8bit processor. It supports the intel 8080 and motorola 6800 modes, parallel interface, 8080 6800 modes lcdtft controller up to vga resolution with dedicated chromart, part of the stm32f4 family. One indication of the complexity of the instruction set is the size of the control store. I looked at the intel 8008 and 8080, zilog z80, and motorola 6800 and 6809, which were all popular 8bit cpus back in the 1970s and 80s. The 8086 also called iapx 86 is a 16bit microprocessor chip designed by intel between early 1976 and june 8, 1978, when it was released. Motorola quickly brings suit against mos technology and chuck peddle for copying the protected 6800. Within 2 years though it was competing against the 6502. Hi all, i suspect this is a really basic and obvious question but here goes. The kit provides the standard address, data, status and control buses as defined in the intel 8080 microcomputer system manual. How to edit a pdf how to set up twofactor authentication how to set up and use.
With only two chips, the microprocessor and any standard. Does it just mean 8bit data bus interface in general. Intel had already commercialized 8080 in june of this year, and motorola was close to the announcement of 6800 products. This small size made it invaluable in the early days of microcomputers in the mid1970s, when typical memory size was only 4 to 8 kb. Contents intel 4004 intel 8080 motorola 6800 zilog z80 intel 8086 apple g5 the microprocessor, also known as cpu, for central processing unit, is a complete computation engine that is fabricated on a single integrated circuit ic.
By people i mean any hobbyist or engineer who is not explicitly prototyping the next cpu to be manufactured by intel or motorola. Content management system cms task management project portfolio management time tracking pdf. Motorola m6800 programming reference manual motorola inc. It was used by acorn in their acorn electron and bbc micocomputer machines. In a datasheet of a lcd module, the data bus interface is described to support 6800 series parallel interface and 8080 series parallel interface. Jump, branch and call instructions use 16bit addresses, i.
Shortly after intel s 8080, motorola introduced the 6800. Intel zilog motorola dec 8080 zeo 6800 pdpii 8086 mc68000 vaxii readers familiar with these eight computers will appreciate the increased com plexity. The dualphase clock was the main issue, as timings are usually tighter than with. The m6800 microcomputer system was announced in march 1974 and was in full. Therefore, the assembly language programmer must be familiar with both the assembly language and the processor for which he is programming. In keeping with general motorola naming, the 68040 is often referred to as simply the 040 pronounced ohfouroh or ohforty. Intels 8080 assembler, motorolas 6800 assembler, nationals imp16. The competing motorola 6800 was released august 1974 and the similar mos technology 6502 in 1975 both designed largely by the same. On the other hand, fairchild was developing a microprocessor called f8, but it was nearly a year behind motorola, and it was still a paper machine at this stage, and so we decided not to go further with this. Nmos led to more powerful chips such as the intel 8080 and the motorola 6800 both 1974. A common interface standard is the intel 8080 mode. Mits, famous for its altair 8800 based on the intel 8080, also made the mits altair 680, which took a back seat to the 8800. Implementing support for the 6800 on the universal chip analyzer u.
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