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China to Make $125 PCs

TechFreep writes "A Chinese computer company hopes to sell low-cost PCs to schools and government agencies, but allegations of ripped-off processor designs might slow the effort. From the article: 'Chinese-based ZhongKe Menglan Electronics Technology Co. will produce several thousand low-cost PCs to distribute to schools and local governments. The PCs, which will initially sell for $150 to $175, will run on Linux and include 256Mb of RAM, a 40 or 60GB hard drive, and a Godson-2 CPU clocked between 800Mhz and 1Ghz. If initial sales of the product are successful ZhongKe will begin mass production of the units for sale at around 125 US dollars. However, the Godson-2 CPU included in the PCs has come under scrutiny of late. BLX IC Design Corp., producer of the Godson-2, produced its first working prototype in 2005. The chip clocked at 500Mhz, and BLX at the time claimed the Godson's performance rivaled that of higher-clocked Pentium III CPUs. However, the chip's architecture has gotten attention around the industry for its similarities to the MIPS chip from MIPS Technologies Inc. According to market research group In-Stat, the Godson-2 is about 95 percent compatible with the MIPS R10000, which was introduced in 1995.'"

22 of 172 comments (clear)

  1. MIPS patents? by tepples · · Score: 5, Interesting

    Plasma implements the MIPS architecture minuses the patented parts. Could the Godson CPU be a variant of this?

    1. Re:MIPS patents? by pchan- · · Score: 5, Informative

      The MIPS architecture is a popular one with people who implement their own cores. In fact, it is rather common for computer science/engineering students to implement their own using FPGAs, based on the commonly used Computer Architecture by Hennessy and Patterson. The architecture is extremely simple, straightforward, and easy to implement.

      I believe you can implemented a near complete MIPS R3000 core with only minor differences and avoid any patent issues (as long as you don't call it a MIPS). Some of the ops on the newer cores are still encumbered and cannot be implemented without paying money to MIPS Technologies. I've worked with a couple of MIPS clones, some by American companies, and there is nothing illegal about them. In fact, it would be far more surprising if the Chinese companies wasted the time creating their own architecture instead of basing it on a proven one.

    2. Re:MIPS patents? by Jason+Earl · · Score: 3, Interesting

      One thing is certain. Microsoft can't pretend that these Linux computers are going to end up running Windows.

    3. Re:MIPS patents? by qbwiz · · Score: 3, Insightful

      It's not too terrible to program an x86 in assembly (all those extra instructions can sometimes come in handy, in a way), but I'd really rather not implement an x86. The instruction decoder alone would take ages to work out.

      --
      Ewige Blumenkraft.
    4. Re:MIPS patents? by poopie · · Score: 3, Informative
      One thing is certain. Microsoft can't pretend that these Linux computers are going to end up running Windows


      There *IS* Windows NT 3.51 for MIPS...

      http://en.wikipedia.org/wiki/Windows_NT

      We had NEC MIPS servers running it way back when.
    5. Re:MIPS patents? by PAPPP · · Score: 4, Informative

      It's worth noting that the patent most likely to be stepped on in dealing with MIPS is US patent 4,814,976, which covers the unaligned load/store instructions lwl, lwr, swl and swr. This patent expires 2006-12-26, which won't be long now. Google for "Lexra" "MIPS" and "Patent" for details of the various spats over the patent.
      Apparently some of the more recent extensions fall under other patents, but the basic archetecture will be entirely unencumbered after this one expires. And as a Computer Enginering student I can tell you as ISAs go it's far and away the easiest useful one to impliment.

    6. Re:MIPS patents? by pchan- · · Score: 4, Informative

      But you may be one of the fortunates who go to school where Hennessy is president, so you may have learned MIPS there =P

      I take it you mean Stanford. I went to UCLA, but many people I've met from different schools in the US have used the same architecture book. I'm talking about computer architecture, not just assembly language. The complexity of the x86 processors is far too great to teach them to undergrads. However, in about a hundred hours of work, one lab partner and I were able to construct a working MIPS-architecture CPU (on a Xilinx FPGA) starting with nothing but gates, flipflops, and other basic elements.

      Now, since you know x86 assembly, let me teach you MIPS assembly in one minute:
      32 registers, r0-r31. r0 is hardcoded to zero. jal/bal (jump/branch and link) push the PC to r31. otherwise, all registers are equal.

      li rD VAL ; load to register rD (destination) immediate value VAL
      lw rD rS ; load word at address stored in rS (source) to
      add/sub/... rD rA rB ; perform op on registers A and B, store to register D
      sw rD rS ; store word at rD to address in rS

      You'll be doing a lot of load/stores. The instruction after a branch statement gets executed even if the branch is called. The rest is just details (extend to half-words and bytes at your convenience). There are no index registers, no flags, no predicates, nothing. Congratulations, you are now qualified to program a MIPS processor.

    7. Re:MIPS patents? by Jamie+Lokier · · Score: 4, Informative

      No, often you can find an instruction to put after the branch. Sparc is the same. It's called the "branch delay slot", and it's a way of reducing the pipeline flush penalty.

    8. Re:MIPS patents? by Hal_Porter · · Score: 3, Informative

      In early, in order non superscalar, Risc chips branch delay slots are natural, since the instruction following the branch has almost completed execution by the time the branch is taken.

      Later chips, notable Alpha, don't do this because the number of natural branch delay slots would vary with implementation. To avoid it, you need to add logic to stall the pipeline until the branch result is known. The idea behind MIPS was to build a simple processor without this logic that could be clocked at enormous frequencies - the original acronym was "Microprocessor without Interlocked Pipeline Stages".

      It's not really a problem, the compiler can usually schedule an instruction there, and if not the NOP doesn't take any time to execute.

      --
      echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
  2. So what are we upset about? by BadAnalogyGuy · · Score: 4, Insightful

    Are we upset that some defunct chip designer isn't getting their cut? Or is it that the Chinese are making cheap computers for themselves instead of for us? Or maybe it's that the Chinese aren't outsourcing their production to the West?

    I don't know what's the problem here. It sounds like a great idea to put as many people on the internet as cheaply as possible because more people means more information and more information transfer. Now Wang Chung in the sticks can be just as up to date with government propaganda as Chung King in Shanghai is.

    Bruce Lee unavailable for comment.

    1. Re:So what are we upset about? by Fulcrum+of+Evil · · Score: 3, Insightful

      Assuming that you're actually serious, someone owns those designs - cheap PCs are a laudable goal, but that's no justification for ripping off a bunch of people.

      --
      "We returned the General to El Salvador, or maybe Guatemala, it's difficult to tell from 10,000 feet"
    2. Re:So what are we upset about? by Noodlenose · · Score: 3, Insightful
      I have no problem with Chinese people--but I fucking hate their country and everything it stands for.

      You're of course trolling, but your lacking maturity makes this acceptable.

      Nevertheless there is nothing more abstract and idiotic to say "I hate this country". What do you hate? Is its rolling hills, its rivers or panda bears? Or might it be that you have a problem with Chinas government and its struggling reformist arm?

      Well, you should say so. There are millions of trolls on Slashdot, but why not aspire to be a troll with something to say?

  3. American retailers not much more by davidwr · · Score: 4, Interesting

    I've seen several "house brand" PCs from major retailers that ran under $250 with Windows and under $150 without when on "we do this almost every week" sales. Yes I know what "loss leader" means but at these prices the Linux boxes probably wholesale for $150-$175. Large school systems and other institutions would probably pay very close to wholesale.

    --
    Knowledge is how to play a game, intelligence is how to win, wisdom is knowing what game to play.
    1. Re:American retailers not much more by WuphonsReach · · Score: 3, Informative

      Hmm, $150 is a tough price point to hit for a regular PC if you're at all picky about components.

      $45 CPU (AM2 Sempron 2800+, which means upgrade capability later)
      $65 M/B (GeForce 6150 w/ integrated video)
      $55 2x256 or 1x512MB (or $25 256MB single-stick)
      $20 DVD-ROM
      $25 Case+PSU
      $45 Hard drive
      ===
      $255

      More like $300 once you buy a reasonably good case w/ PSU for $50-$75. And it would be expandable to put more memory and a more powerful CPU in it down the road.

      You could still probably shave $100 off that price if you go for close-out deals, really cheap motherboards, older CPUs that are only $20ea, 256MB of RAM, and a really cheap case+PSU that will probably catch fire right after the warranty expires.

      (The machines I'm building for work are around $500 for parts, but those are dual-core w/ 2GB RAM.)

      --
      Wolde you bothe eate your cake, and have your cake?
  4. Re:Why is this so hard? by grumbel · · Score: 4, Insightful
    Such computers seemed to handle word processing, web browsing, email, etc.

    Not when you want to use OpenOffice and Firefox. I am not sure if they really want to, but todays applications simply require quite a bit more CPU and RAM then yesterdays applications, even for the very same jobs. So unless they also write the low-spec software, they better make sure that they have enough power to run current days applications.

  5. On a lighter note by OldManAndTheC++ · · Score: 3, Funny

    The system will come bundled with lots of open-source software, including the famous Radiant Dragon Pearl 2.0, which is known as the Perl of China, written by Won Ton, who is known as the Larry Wall of China.

    --
    Soylent Green is peoplicious!
  6. Chinese attitude towards Linux by patio11 · · Score: 5, Funny

    "We were going to pirate it, but couldn't figure out how."

  7. Why is the processor seen as a ripped-off design? by joeykiller · · Score: 3, Interesting

    In earlier coverage on Slashdot of this chip (see the initial announcement, the follow up and the announcement of a 64-bit variant), at least in the coverage of the 32-bit Dragon version of the chip, no one blamed the chinese for ripping of anything. I even remember someone saying that the MIPS specification were free to use for anyone, as long as they paid around $20 for access to the specs. What has happened since then, and what is different in this case from, say, AMD cloning til Intel instruction set?

    The principal investigator of the Godson program, Hu Weiwu, have some colorful comparions to houses and bedrooms when he tries to explain why he means that the Godson-2 processor does not infringe on any patents or intellectual properties.

  8. $125 still might be too expensive by the_humeister · · Score: 3, Insightful

    This is especially when I can get a used computer with decent specifications (Pentium III, 1 GHz, etc) for approximately $25-$50 at the local surplus store.

  9. Re:95% compatibility? by shadow_slicer · · Score: 4, Insightful
    'Instriial espionnage' is not needed. The MIPS instruction set and architecture are standard reading for anybody in the field. They're not saying they copied the layout or instruction set, it's more like the API.

    All processors have a language they understand, a sequence of bits that have an arbitrary meaning to them. And these are usually published far and wide, so that people can write compilers and operating systems and assemblers for this processor. MIPS in particular is very popular to study because the simple structure makes it possible for teachers to make creating a VHDL or Verilog implementation of a simplified MIPS instruction set into a half-semester project.
    In fact I doubt their implementation is anywhere near the same caliber as the Pentium III implementation, even if they claim the same speed. What probably happened is they have access to more modern, smaller fabrication methods so they can cram more transistors into the pipeline. And even soft IP cores in FPGAs can hit 200MHz, so a well designed core could probably hit 500 MHz in an ASIC.

    That being said, creating a full super-scalar CPU implementing even 95% of the MIPS 64-4 version of the instruction set in silicon is difficult. I was not familiar with this specification, but a quick search on google reveals that
    The Mips R10000 is a dynamic superscalar microprocessor that implements the 64-bit Mips-4 Instruction Set Architecture. It fetches and decodes four instructions per cycle and dynamically issues them to five fully pipelined low-latency execution units. Instructions can be fetched and executed speculatively beyond branches. Instructions graduate in order upon completion. Although instructions execute out of order, the processor still provides sequential memory consistency and precise exception handling.The R10000 is designed for high performance, even in large real-world applications which have poor memory locality. With speculative execution, it calculates memory addresses and initiates cache refills early. Its hierarchical nonblocking memory system helps hide memory latency with two levels of set-associative, write-back caches.
    This is a really beefy processor that was probably state of the art in its time. Of course that was over 10 years agos. Is it really so suprising China is only 10 years behind in chip design? After all aren't most of the chip fabrication facilities in east Asia? I'd imagine there would be quite a few people who after a few years decide they want to be on the other end of the process.
  10. Re:125$ is still unaffordable by 808140 · · Score: 3, Insightful

    It's far cheaper than what (the Chinese anyway) currently have to shell out for a computer system. It may not reach impoverished farmers in Guizhou province, but it will certainly increase the number of people who can afford a computer.

    However, I anticipate that no one will buy it. Computers are too expensive for many Chinese to own personally, but "internet cafes" ("gaming cafe" would be a more accurate name) are plentiful and extremely cheap -- 2 or 3 yuan per hour is typical (that's about 25 - 30 cents US). PC gaming is huge in the PRC (consoles never really caught on), and that's what the vast majority of Chinese use their machines for -- that and chatting, mostly on QQ, which GAIM and friends do not support*.

    The result is that most Chinese are routinely exposed to Windows, and worse, they're addicted to a wide variety of Windows-only software. While owning your own machine is certainly a nice perk, the question they will be asking themselves is, do I want to shell out 125 dollars for a machine that won't run any software I want, or do I want to suffer through not having my own machine, and buy a USB memory stick instead, and do all my computing at the local internet cafe?

    My guess is that for the vast majority of Chinese, the latter will seem like a much sounder choice. A 125 dollar x86-compatible machine would be one thing, but if all it can run is Linux, the Chinese won't go for it. Linux penetration in China is virtually nil, except maybe in the government, but they're not the types that would buy 125 dollar, 500MHz desktops.

    Thankfully, Chinese support is much better in Linux now than it used to be, but there are still no decent free Chinese fonts -- something that, as a Chinese speaker who uses Linux exclusively, I am very aware of. This company probably would think nothing of bundling MS's SimSun and SimHei fonts with their distribution, as they've thought nothing of using a rip off MIPS chip, but that would be copyright infringement and in my mind wrong. I personally use SimSun and SimHei, but I paid the MS tax when I bought my thinkpad with XP pre-installed (in China, no less). The $125 laptop doesn't come with a Windows license.

    All in all, it looks like a bust. It's cool, though.

    (*There have been a few attempts to port QQ to Linux, but Tencent adds features to the QQ protocol much too quickly to keep up. Lack of support for wanted features would make Linux seem broken, even though the real culprit is a complex, proprietary, binary protocol with built in obsolescence... but hey, they don't know that.)

  11. XBox by kyb · · Score: 3, Insightful
    XBox: Intel Celeron 733 MHz CPU, nVidia GeForce 3MX, 64 MB of RAM, 10 GB hard disk, a DVD drive and 10/100 Ethernet.
    Cost new: $125

    So there's already a 125$ pc that can run linux in the mass market here for $125. The specs aren't quite as good as the chinese one, but it is quite a few years old now, and has a well known intel processor and graphics accelerator.

    kyb