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Type: Posts; User: jregel

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    I think you're probably right with this...

    I think you're probably right with this suggestion. It's the only thing that makes sense and re-reading the datasheet, it does explicitly state Waveform Memory is "65 K-bytes" whereas the other...
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    Thanks for the replies. I thought it was...

    Thanks for the replies.

    I thought it was probably related to banking as well, but the documentation seems to suggest that it treats a 64K memory space as lower 32K and higher 32K external waveform...
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    Ricoh RF5C68 (Mega-CD PCM chip) question

    I’ve been looking at the data sheet for the RF5C68/RF5C164 PCM sound chip as used in the Mega-CD (as well as the FM Towns and Sega System 18 and 32). It states that “Waveform memory space” is “64...
  4. Possible details of the Saturn’s “3D upgrade cartridge”

    Many will have read the rumours of an upgrade for the Saturn that would have given the console improved 3D graphics. Although the magazines of the day suggested the upgrade would feature a Real3D...
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    Hi. I'm getting the same. Tried to post a new...

    Hi.
    I'm getting the same. Tried to post a new thread yesterday and got the message that it was awaiting approval (actually missed it the first time and thought I did something wrong, so may have a...
  6. Make one technical change to a console’s design

    A bit of weekend fun…

    Take a console and make *one* technical change to its design and explain why it makes it better.

    The rules:

    Keep your post to one console and one change only
    Must be...
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    Didn't the 3DO have this capability too? I recall...

    Didn't the 3DO have this capability too? I recall the 3DO patents included one for per-line CLUT manipulation. Which wouldn't be surprising really as the 3DO was designed by ex-Amiga designers.
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    Did many 32X games use both SH2 CPUs?

    As title, of the 32X titles released, does anyone know how effectively they use both SH2 processors? The 32X didn't really get much further than first generation titles, and I'm curious as to how...
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    CPU comparisons (ARM, SH2, R3000A, J-RISC)...?

    For the developers on this forum who have programmed multiple consoles, how do the various CPUs compare? What are the pros and cons of the different processors you've used? I'm specifically thinking...
  10. Thanks Chilly for the useful info!

    Thanks Chilly for the useful info!
  11. Thanks Chilly Willy. It's useful to get a...

    Thanks Chilly Willy.

    It's useful to get a perspective from someone who knows both platforms well! I've read the SDK documentation about the maths instructions, but don't have the background to...
  12. Can we talk about the 3DO? I've seen posts...

    Can we talk about the 3DO?

    I've seen posts that state how much more powerful the Jaguar was than the 3DO (because it had 2x26Mhz RISC processors, 13Mhz 68000, 64bit Blitter and 64bit Object...
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    Slipstream? Can't remember the name of the...

    Slipstream? Can't remember the name of the company that was using it, but think it was three letters long starting with "M"?
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    Thanks Crazyace. I've read through the VDP1...

    Thanks Crazyace.

    I've read through the VDP1 manual that describes the various pixel/colour formats and also the VDP2 guide and think I have it, but would appreciate any corrections or...
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    Please forgive my ignorance here, but if the VDP1...

    Please forgive my ignorance here, but if the VDP1 framebuffer output is seen by VDP2 as just pixels and not sprites, how could it apply per-sprite priority? How would it be able to work out what...
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    Thanks Crazyace. I've had a read of those...

    Thanks Crazyace.

    I've had a read of those chapters in the VDP2 guide, but to be honest, most of it is beyond me. This leads me to ask a couple of other questions:

    What exactly does per pixel...
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    The Y-Board could do that, but I've not seen...

    The Y-Board could do that, but I've not seen anything on System 32 that appears to do what is effectively post-processing frame buffer rotation. It would be odd that Sega would have designed their...
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    System32 and ST-V (Saturn)

    I've read a number of interesting posts on this forum and it's obvious that some members know a lot about the workings of various Sega consoles, so I was wondering if anyone knew much about the...
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    Wow - that's a lot of really good detail! Thanks!...

    Wow - that's a lot of really good detail! Thanks!



    I'm a bit confused by this as I've seen bi-axial rotation quoted in many sources regarding the ASIC as if it's something special. On the SNES...
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    Yes. When I used the work "distorted" I was...

    Yes. When I used the work "distorted" I was meaning the scaled/rotated/warped object.

    If I'm understanding this correctly, the ASIC performs the line by line rendering, writing this output to a...
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    Thanks for the insightful comments! So am I...

    Thanks for the insightful comments!

    So am I right in thinking the ASIC is essentially similar to a Blitter in that it takes a source, performs some logical operation on it and then writes to a...
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    MegaCD ASIC questions

    Hi

    I'm interested in finding out more about the SegaCD/MegaCD ASIC and what it's capable of doing. The Youtube video demonstrating the scaling and rotation capabilities is very impressive, but...
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