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zilog the cpu shack museum cpu history museum for intel cpus amd processor cyrix microprocessors microcontrollers and more total cpu s 20 000 total manufacturers 150 total eprom s 2000 home about pictures reference trade links contact us test boards products the cpu shack has a variety of test boards available for sale including mcs 4 40 boards rca cosmac boards mcs 80 boards z80 8085 nsc800 expansions mcs 8 test systems national sc mp test board 6800 6502 family test system signetics 2650 test boards intel mcs 86 test systems intel i3002 test systems am2903 2901 74181 motorola 68060 cpu s categories boards and systems cpu of the day eprom of the day gpu how to just for fun memory museum news processor manufacturers processor news products research uncategorized recent posts sandia national labs sa3000 8085 cpu the forgotten ones actron am1608 16 bit cpu the general automation ga 16 16 bit cpu unknown and unobtainable mystery chips soviet s first planar integrated circuits october 30th 2014 by admin sgs ates m380 and gi lp8000 8 bits for europe sgs ates m380b1 1977 in the 1970 s the computer age was booming new processor designs were being pushed out by the month and computers to use them were being designed and outdated just as fast not all markets were growing as fast as the american market or could support the newest most complex and expensive designs thus it was common for semiconductor companies to design chips specifically for these markets europe was considered one of these markets where simpler more affordable devices were easier to sell thus cpus were made specifically for the european market many of these designs are still nearly impossible to find outside of europe general instruments was one such company their premier processor the cp1600 was a 16 bit deign based on the pdp 11 it was one of the first nmos 16 bit processors along with the ti9900 and was released in 1975 gi also had the pic line of 8 bit mcus for control oriented tasks which is still in production today gi wanted a design for the european market so in 1976 released the lp8000 lp for logic processor the lp8000 was a 3 chip simple processor and cost a mere 10 it could execute 48 instructions including add but subtraction was not supported directly at a clock speed of 800 khz and was made on a pmos process the chipset consisted of the lp8000 processor which contained the alu and 48 8 bit registers as well as the accumulator a 6 bit address bus and 8 bit of i o combining the 6 bit address and 8 bit i o busses allowed the lp8000 to directly address 16k of memory the 11 bit program counter was contained off chip on the lp6000 which also contained an additional 16 lines of i o and 1k of rom for program storage clock generation was provided by the lp1030 and memory expansion was handled by the lp1000 which also includes a 11 bit pc for interfacing up to 2k of memory while the lp1010 handled i o expansion in order to be successful in europe gi needed to find a european partner who could make market and sell the design gi lp8000 that partner ended up being sgs ates of italy which later would become st microelectronics sgs ates second sourced the lp8000 as the m38 or m380 series the m380 was the processor element while the m382 was the 1k rom equivalent of the lp6000 in addition sgs ates made the m381 which had 18 bytes of ram and 768 bytes of rom as well as the pc like the lp8000 the m380 drew about 1 watt of power and required a 5v and 12v supply or a 5v and 17v the m380 was rather short lived as sgs ates soon licensed the zilog z80 which was a much more powerful yet still inexpensive design when sgs ates purchased mostek from united technologies they added yet another 8 bit design the f8 which mostek had licensed from fairchild these processors quickly replaced the m380 lp8000 and with no market it faded into obscurity tags gi lp8000 m380 sgs ates zilog posted in cpu of the day october 11th 2014 by admin why the zilog z 80 s data pins are scrambled zilog z80a cpu 1978 ken shirriff has an excellent write up about the zilog z80 and why its pin out specifically the data lines is a bit convoluted rather then being in order such as d0 d7 the original z80 is d4 d3 d5 d6 d2 d7 d0 d its functional but its not pretty and can lead to some interesting pcb layout issues ken uses data imaging from the visual6502 project to look at the on die reasons for this essentially it came down to saving die space there literally was not enough room to route the data connections within the confines of the die size keeping the die size small allowed zilog and its many second sources to keep prices down in the early days zilog contracted mostek to make much of their processors so die size and the associated cost were a big issue tags zilog posted in research january 17th 2014 by admin zilog packaging marketing kit zilog packages available in 1985 last week we showed you an educational kit from zilog showing the process involved in making and assembling a z80 processor from polished wafer to packaging zilog also made a kit for marketing the various packages used this kit contains a shrink dip 64 pin socket a shrink dip 64pin package a 48 pin dip and 40 pin dip all the common packages used at the time zilog packages z8 z80 z800 and z8000 at the time is a little hard to track down as no date is provided with this kit we can get very close though looking at the back where zilog lists which devices are available in these packages the usual z80 and z8000 series are both there as well as the z8 microcontroller family the one odd ball is the zilog z800 the z800 was an upgraded z80 released in 1985 adding on chip cache an mmu and a vastly expanded instruction set over 2000 instruction addressing modes it was wholly unsuccessful partly do to bad marketing by zilog and partly because it did more then it needed to it never entered mass production and by 1986 zilog has redesigned it converted the design to cmos from nmos and released it as the z280 which met the same fate as the z800 it seemed that making an overly complicated z80 wasn t what the market wanted the z180 designed by hitachi and the zilog ez80 released in 2001 have enjoyed much wider success mainly because they kept closer to the simplicity of the original z80 so when was this kit put together likely 1985 as the z800 was nly talked about for a few months before quietly being put away tags packages z80 z800 z8000 zilog posted in cpu of the day january 9th 2014 by admin zilog educational sample kit zilog z 80 kit click for full size here is a neat kit from zilog its an educational kit showing some of the steps of producing a z 80 processor it includes a raw polished wafer slice before any etching has occured this is what a processor starts out with sliced from a single large ingot a slice of an etched wafer in this case it appears to be some sort of memory but the process is the same for a processor several cut die these are cut from a wafer after testing the red dot notes that these particular dice failed one or more of the tested and should be discard thats probably why they made it into this kit rather then a saleable device an bare unfinished package these packages are rarely if ever made by the company making the processor they are made by companies such as ngk who also makes spark plugs and kyocera the bottom of the die cavity is usually connected to the ground pin of the package next is a package with the die placed in the die cavity no bonding wires are installed in this example but that would be the next step the very fine gold bonding wires connect the pad ring on the edge of the die to the pads in the die cavity those ads are connected through the package to the 40 pins of the ceramic dip package finally we have a completed device the lid is usually soldered or brazed onto the package and markings applied the marking on this example make it a marketing sample as they are there solely for looks rather then to identify the device its date and lot these types of kits were produced for educational use and given to schools as well as sales people to assist in marketing zilog s various products tags wafer zilog posted in cpu of the day october 15th 2010 by admin zilog the first decade z80 z8 and the z8000 in 1974 federico faggin left intel after working on the 8 bit 8080 processor he formed a company called zilog and developed a much improved version of the 8080 called the z80 it was released in 1976 after only 18 months of design the z80 was faster cheaper and simpler to build around then the 8080 and enjoyed extremely wide use zilog designed the cpu but it was marketed differently than most at the time any company could purchase a license to the design and build them royalty free they were also free to do with the design as they pleased this resulted in dozens of companies making clones versions of it the soviets made unlicensed copies as well in fact other companies made more z80s then zilog did themselves zilog z 80 cpu 8400x cs 1979 2 5mhz the z80 was not the only processor that zilog made some of the processors part numbering can be a bit confusing so we ll look at each family and part that zilog made up through 1985 after 1985 cmos designs came out as well as dozens of variations we just want to look at the first ten years of zilog zilog z8300 3ps 1984 2 5mhz the z80 itself was of course similar to the 8080 but single voltage and only required a single clock phase it was available in speeds of 2 5 8mhz zilog also made a low power version known as the z80l z8300 that ran from 1 2 5mhz that s really all there was to the z80 family up through 1985 read more tags z8 z80 z8000 zilog posted in research rss feeds the largest cpu museum in my daily hunt for new processors and other chips for the museum as well as information about new chips i constantly come across interesting chips in strange locations here you will get a chance to learn where many of the chips in the museum come from and what they are latest cpu images here they are sorted by manufacturer technically brand and thumbnails are now working you may also view them in raw directory form here and a few that didnt make it into the gallery here ebay deals clicking a link to ebay may result in a referral commission being paid if a purchase is made loading popular articles links how a cpu is made amd 29k reference guide mergers aquisitions spin offs k6 2 cpu id guide via c3 cpu overview uli m6117c embedded 80386sx overclocking eastern bloc cpu guide cpu socket id guide mediagx and geode cpu guide cyrix id cpu guide intel rapidcad cpu datasheet archive tags 2901 6502 6800 alu amd apple arm atmel bit slice cyrix dec dsp embedded eprom fairchild hp ibm intel lsi lsi 11 mcm mcs 51 mcu mil std 1750a mips motorola national semiconductor nec nvidia pdp 11 philips pic powerpc qualcomm renesas risc signetics soviet space sparc sun ti vliw z80 zilog 2009 the cpu shack site by pxl creative