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Thread: FPGA accelerator cards

  1. #21

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    Quote Originally Posted by Eudimorphodon View Post
    (*Edit: Seriously, now I want to see someone put a small SBC equipped with CPU that has modern VT/IOMMU extensions into an ISA slot/8088 CPU socket. Then use hypervisor mechanisms to allow a DOS session running on the card to directly access the hardware in the parent machine. Just think of all the wait states...)
    I remember having a conversation with a coworker once about the fact that we now have CPUs with L1 cache larger than the entire main memory of even some low-end 386 setups. It'd be amusing to try rigging up the minimum possible translation layer required to run a virtual-8086 session on a modern PC motherboard and see how fast it could be pushed with the entire affair running out of cache.
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  2. #22
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    Don't some modern CPUs actually drop support for 8088 and similar?

  3. #23
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    Depends on what you mean by modern. The recently-discontinued Itanium IA-64 series has its own instruction set, not compatible with x86.

  4. #24
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    Modern x86 CPUs combined with 64 bit EFI no longer do much initialization in Real Mode, but they do technically still have it. And even though vm86 mode no longer exists in 64 bit mode you can still access *that* by using a hypervisor running the chip in 32 bit mode. (VT-x is helpful.)

  5. #25
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    Quote Originally Posted by Chuck(G) View Post
    Depends on what you mean by modern. The recently-discontinued Itanium IA-64 series has its own instruction set, not compatible with x86.
    Meaning they were manufacturing them until recently?

  6. #26
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    Intel announced discontinuation this year. They're history.

  7. #27
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    Zounds. I thought they were already ancient history.

  8. #28
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    Gone, pretty much

    I thought they were already history when AMD64 came out. Amazing how long they've held on.

    So, that leaves us with current production of what, x86 and ARM for CPUs? (I'm not counting MCUs, which are far more varied).

  9. #29
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    Quote Originally Posted by Chuck(G) View Post
    So, that leaves us with current production of what, x86 and ARM for CPUs?
    that's pretty much it in 'PC' space

    MIPS in SOCs, SPARC, and POWER in Fujitsu and IBM

  10. #30
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    I thought that IBM was dropping POWER from development.

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