The cyrix mii is an evolution of the 6x86mx, operating at higher frequencies. This is a pretty sweet computer, and its got another cyrix processor. Shadowing a rom reduces the memory available between 640kb to 1024kb. St 6x866x86 mx cpu museum museum of microprocessors. The pentium and higher cpu families normally operate their l1 cache in writeback mode. This list was acquired from an actual cyrix mii 233 66fsb processor with the help of the x86 cpuid instruction. D8000dbfff shadow disabled its for shadow control of item. The cpuid code i wrote some years ago never uses cpuid for cyrix processors, but it constructs and id code from the info contained in the chips registers. One one hand, i promised you information on this subject ages ago, but on the other hand, much of the. Return to the cyrix and ibm id guide go to the mediagx guide. I have mixed feelings about writing this paragraph. This processor continued the cyrix tradition of making faster replacements for intel designed sockets.
However, the 6x86 was the star performer in the range, giving a claimed performance boost over the intel equivalent. Cpu shack cpu collection cyrix and ibm 6x86mx 6x86l. This is basically a 6x86l with mmx instructions and a larger 64kb cache. Overclocking the cyrixibm 6x86 overclocking guide toms. Buy cyrix cpus and processors and get the best deals at the lowest prices on ebay. Intel enjoyed a comfortable position as the pc processor manufacturer of choice throughout the 1990s. Im not sure if its currently available online though. Cyrix produced their own design cpus such as 486 class processors with partly pentium technology and 486 pinout called 5x86 and pentium pro class cpus with pentium pinout 6x86 using a risc core with x86 translation. This device must accept any interference received, including interference that may cause undesired operation fcc class a. Apr 08, 2009 vista booting on 250 mhz cyrix mii computer. Cyrix and ibm 6x86mx 6x86l 6x86lv and mii chip id guide this is the raw data used in making the id guide.
However, this chip was regularly pitted against actual 433mhz processors from other manufacturers, making the comparison unfair. Later in 1995, cyrix released its bestknown chip, the cyrix 6x86 m1. After the initial fame the successful 6x86 processor brought cyrix, the fabless manufacturer decided it was time for a more powerful. The 6x86 is superscalar and superpipelined and performs register renaming, speculative execution, outoforder execution, and data dependency removal. Cyrix 6x86mii cpuid this field should be enabled when running windows 2000 in order for the os to recognize cyrix 6x86mii processors. During submission, please specify family name, mii 300gp 66 mhz 2. Richardson, texas in a article in pc week, lisa dicarlo claimed that independent microprocessor testers have reported that cyrix corp. During submission, please specify family name, mii300gp 66 mhz 2. The cyrix 6x86 codename m1 is a sixthgeneration, 32bit x86 microprocessor designed by cyrix and manufactured by ibm and sgsthomson. Unlike the original 6x86 these use a splitrail voltage design like the pentium mmx. Cpu identification routine freebsd has powerful cpu identification and initialization routines. Dating from the time of their 486 line of processors, in 1989, it was cyrix, together with fellow longtime intel cloner advanced micro devices amd, who have posed the most serious threat to intels dominance. L cyrix 6x86mii cpuid enabled this item allows user to control bios enabled or disabled cpuid for cpu cyrixmii.
Amd and cyrix went head to head trying to develop the best socket7 processor on the market that could compete with intels flashy new chip. User manual pcm3355 pc104 sbc wamd lx800 lx600, vga, lcd, lan, usb2. A simplistic block diagram of the cyrix 6x86 microarchitecture. View and download data modul pcm9375 user manual online. Any discrepancies between cpuid features and official specifications are likely due to some features being disabled in bios, or due to a bug in our cpuid decoding algorithm. Find great deals on ebay for cyrix 6x86 and socket 7 motherboard.
The cyrix 6x86 codename m1 is a sixthgeneration, 32bit x86compatible microprocessor designed by cyrix and manufactured by ibm and sgsthomson. The last cyrix badged microprocessor was the cyrix mii 433 which ran at 300mhz 100x3 and performed faster than an amd k62300 on fpu calculationsas benched with dr. Get the best deals on cyrix computer processors and find everything youll need to improve your home office setup at. Cpuid must be issued with each parameter in sequence to get the entire 48byte nullterminated ascii processor brand string. First cyrix 6x86 notebook ships sign in to comment. I will talk about the parts, show the software and bios setup. After cyrix was purchased by national semiconductor in 1997 they terminated their foundry agreement with ibm. Through the use of innovative, sixthgeneration architectural techniques, the 6x86 processors achieve bestinclass performance that surpasses the pentium processor in each performance class. Erp plm business process management ehs management supply chain management ecommerce quality management cmms. Buildin cache optionsdisabling l1 cache makes a processor very slow, at least half the processing. Pcm9375 single board computers pdf manual download. I am thinking of a new pc with a cyrix 366 mii processor, i am on real budget, and the price is right if it will run autocad 2000 with land development desktop.
We will benchmark the machine and showcase some popular dos games in vga and svga resolution to see what this machine can do. D4000d7fff shadow disabled its for shadow control of item. Custombuilt socket 7 computer with cyrix 6x86 cpu youtube. If you have this processor please use our cpuid tool to submit cpuid information. It can identify most steppings of all cyrix and compatible processors. Jul 11, 2015 the next member in our series of the computers i saved from the ewaste pile. We dont have cpu id information for the cyrix mii 300gp 66 mhz 2. All of nonintel cpus are automatically detected, and are initialized if necessary. This cyrix mii is the next best thing, containing a 6x86 compatible instruction set while still running at speeds comparible to the. Im sure i could find it for you if you need a text mode id app. We are building a cyrix 6x86 dos retro gaming pc with tseng et6000 graphics, ess audio drive and dreamblaster x2 wavetable general midi board.
Each had their own marking system and id codes for their chips. Cyrix 6x86 mx by anand lal shimpi on april 8, 1997. Cyrix, ibm, st and national all made the cyrix line of cpus. We dont have cpu id information for the cyrix mii 333gp 83 mhz 2.
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