Melkhior's latest activity

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    Melkhior replied to the thread 68040 mhz.
    Absolutely. The '040 had a lot of improvement over the '030, including the caches and faster/better bus interface. The computational...
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    Melkhior replied to the thread 68040 mhz.
    Mmmm, Wikipedia insists that my memory has failed me and it was 3x33 and 2x50, but no 4x. And Wikipedia happens to be correct - though...
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    Melkhior replied to the thread 68040 mhz.
    It can do both, the fastest ones (DX4-100) could do either 25x4 or 33x3. They usually ended up doing 25x4 because same chip, same...
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    Melkhior replied to the thread 68040 mhz.
    Not really a scam. Marketing needs and all-around misunderstanding of how CPU works I'd say. WayWayTL;DR: That, and see the last few...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    There was support added, as documented in "Designing PCI Cards and Drivers for Power Macintosh Computers" (p513). However, I have never...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    "True" hardware cursor, in the style of Brooktree, don't rely on a blitter - do you use what I would describe as an "offscreen cursor" ...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    Indeed there is no support for hardware cursor in 6/7/8. I also have the hardware cursor (albeit smaller at IIRC 32x32, a clone of what...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    I think it's the issue is skills for now - having people involved that know how to do all the steps "after" HDL design - DFT...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    Yes, FPGA feels a lot more like hardware than software emulation. And things like PiStorm and other feel a bit off to me - when going...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    Hehe, me too. Much more fun to be able to fix/update/improve/extend the design even after the hardware is done :-) Neat. Is it purely...
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    Melkhior replied to the thread New Project: DoubleVision SE/30 Card.
    Dedicated chip(s) for video and/or acceleration, or are you using a FPGA for everything ? The rendering show quite a small chips for a...
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    Melkhior replied to the thread New Project: Prodigy 040/060 Card.
    One document that can be enlightening is the "Guide to the Macintosh® Family Hardware, Second Edition", which is available from...
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    Melkhior replied to the thread IIFX ram gerber.
    Probably, but beware the behavior of MLCC capacitors. Voltage derating with DC bias can be really bad. Here's a cheap 50V, 100nF 0805...
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    Melkhior replied to the thread New Project: Prodigy 040/060 Card.
    Mmm, never looked at the serial port in details. But AFAIK, if you're lucky, they will all be in the same place in the memory space -...
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    Melkhior replied to the thread New Project: Prodigy 040/060 Card.
    Even limiting yourself to '040-based system, video can't be reliably determined, as Macs are perfectly fine when not using the onboard...
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