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Thread: PC-Engine

  1. #131
    h4tred
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    Exactly Exophase. I too don't really see the point with the preoccupation with pure per cycle accuracy. I see the point in accuracy to a degree, but I don't see going entirely overboard to the point where it requires a Core 2 Duo to even run.....

  2. #132
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    Quote Originally Posted by angrylion View Post
    Aladar, do you plan to add GUI at some point?
    No, I prefer to maintain the code as simple and portable as possible.
    I think that a GUI is not strictly necessary, see Mednafen for example.

  3. #133
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    PicchioEngine v0.0.6 (2009/06/23)
    - The configuration is now handled through a file(PicchioEngine.cfg).
    - Removed the possibility to insert optional arguments from the CLI.
    Note: Not a definitive choice.
    - More verbose output.
    - Complete support for joysticks.
    - The input assignments are now redefinable.

  4. #134
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    PicchioEngine v0.0.7 (2009/08/04)
    - The range of the audio buffer size is now 1~3072 samples.
    - Corrected a bug in the PSG code that affect the starting phase of the waveform generators.
    - Separated the emulation of the two low-pass RC filters(DUO-R) from the BLEP audio synthesis.
    - The high-pass RC filter(DUO-R) now use floating point numbers instead of integers.
    - Optimized version of the BLEP synthesis for processors that support the SSE2 instruction set.

  5. #135
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    I compared the Street Fighter 2 Champion Edition joypad routine with the one from HuDK. One of the most interesting thing is that SF2 performs an extra joyport read after reading the 5 joypad states in order to check if a Multitap (PI-PD003) is there. If the returned value is $F0, we have a Multitap.



    Is there a way to detect how many joypads are plugged? What about the other multitaps?

    Hopefully a Twin Tap and a Twin Commander magically landed on my desk for some time (thanks Adoru).

    Let?s start with the Twin Tap. It?s a 2 ports multitap. Unfortunately there?s no way to detect available joypads or a 2 ports multitap.

    Anyway! This multitap has some interesting peculiarity. If you check the you?ll see that there?s not 2 but 3 ports and a 3 positions selector switch. Why is there a third connector and a selector switch? I?m afraid we?ll never know.

    The selector switch changes the joypads order. This means that the joypads plugged in the Twin Tap will appeared at a different position in the joypad read routine. Here?s a table with the switch positions and the joypad ?positions?.

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