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    Afternoony Zetro, I did try that last night....

    Afternoony Zetro,

    I did try that last night. But you do end up with over 6MB of chaos to trace through. Maybe an Action Replay #4 (a1200 version) and/or WinUAE debugger would be easier.

    Paul.
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    I've noticed if the CDROM ribbon (CN17) is...

    I've noticed if the CDROM ribbon (CN17) is disconnected there's NO boot delay before the Kickstart CD ANIM screen to suggest any cdrom device module(s) or [kickstart Gayle IDE] have failed query...
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    Sticky: Slightly random addition.

    My miniature UHF Video Transmitter (ASTEC UM1233) made from a spare (modified) Sinclair Spectrum 48K RF module: http://www.youtube.com/watch?v=Kjnz7mOPIRw :lol:

    Never got round to including the...
  4. [QUOTE=Hell_Labs;151116] The assumption is...

    The assumption is made you already "know" (at least have a fundamental understanding) by making use of relevant terminology.

    Regardless of whether you understand or not; the information is...
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    Kolla

    http://amiga.nvg.org/
  6. I don't know if you've inadvertently made a typo,...

    I don't know if you've inadvertently made a typo, but the HSYNC and VSYNC are the wrong way on that bit of Amiga board.

    Should be:

    VGA

    Pin 1|2|3 RGB (6|7|8 GND)
    Pin 9|10|11 Sync GND
    Pin 13...
  7. Sorry if my explanation seemed incoherent. ...

    Sorry if my explanation seemed incoherent.

    Let's clarify. It's a multiscan monitor, you're removing the existing 15/9 way connector and remapping to an Amiga's 23pin Dsub type?

    So your key pins...
  8. I assume the composite sync pin 4 to Amiga pin...

    I assume the composite sync pin 4 to Amiga pin 10?

    If you're disconnecting the RGB and the Amiga's composite colour returns, you must be nuking it within the video hybrid as the composite is CVBS...
  9. So collectivity you get monochrome, would imply...

    So collectivity you get monochrome, would imply the RGB are canceling each other out? :wooha:

    When you say 'tint' do you mean subtracting individual R G B elements produce the collective of the...
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    Sounds like the poor bugger is just about hanging...

    Sounds like the poor bugger is just about hanging in there, seems very temperamental. :(

    If the entire image appears bias (SCREEN) to RED, then perhaps your GREEN and BLUE are drifting. Maybe...
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    Maybe 'stedy' can help you:...

    Maybe 'stedy' can help you: http://www.ianstedman.co.uk/Amiga/designs/Floppy_Adaptor/floppy_adaptor.html

    Sold out at the moment, though perhaps something to look forward to. You could use his...
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    As your Focus/Screen are part of the flyback and...

    As your Focus/Screen are part of the flyback and the blurriness resolves and stablises after a period of warming it's probably your best starting point as rkauer stated. (High voltage, dividers...
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    Also, try and locate where the noise is coming...

    Also, try and locate where the noise is coming from, if it's not from the SMPS, check the filament (F1/F2) (*heater /electron gun) for loose partials (coating oxidisation (age) (aubible noise) ) or...
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    Sorry to hear of your bad luck. The...

    Sorry to hear of your bad luck.

    The "interference" or *lines you see are most likely the retrace (flyback) [slightly slanted]. Be careful adjusting (over ramping/probable cause of sound) the...
  15. Thread: A501 mod

    by skippy
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    @Zetro: I'm very well, thanks. Look forward to...

    @Zetro: I'm very well, thanks.

    Look forward to reading more about your 4mb simm upgrade. I'm sure you have all the bases covered, if you require any support or bits n bobs just holler. :thumbsup:...
  16. Thread: A501 mod

    by skippy
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    Hi rkauer and Zetro, hope all is well. I...

    Hi rkauer and Zetro, hope all is well.

    I happened across some information that I wondered might be of some use to yourselves regarding this project. Though not directly related I thought the...
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    The 1084 *does* have a degauss. There is a...

    The 1084 *does* have a degauss. There is a posistor [2322 662 98018] located at [R104] on the SMPS unit.

    If you believe it *not* to be degaussing and intend to fault-find this is where you should...
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    JetSet's Modified IDE cable.

    See if this helps you Ed.D all it requires is an element of patience.

    Regards,

    Skippy.
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    http://bboah.claunia.com/zeusisdn.html ...

    http://bboah.claunia.com/zeusisdn.html

    http://www.amiga-hardware.com/showhardware.cgi?HARDID=645

    the only ISDN controller/driver support I could find seems to be under NetBSD. (Amiga Unix)
    ...
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    I have originals if you're still struggling. I'd...

    I have originals if you're still struggling. I'd also recommend RAMSCAN Software 1990-91 Audio Engineer Plus II for sample editing/waveform, compliant with most of the samplers I've used including...
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    Some lovely photos of fascinating pieces of...

    Some lovely photos of fascinating pieces of hardware, thanks for sharing.


    Great informative read too, thanks Zetr0. :thumbsup:

    Skippy.
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    You need to rule out that computer game "Marble...

    You need to rule out that computer game "Marble Madness" too in case the mouse coding is not very accurate.


    The reason I stressed that earlier is because the way the Amiga interprets the optical...
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    When you've done some more testing share the...

    When you've done some more testing share the results as this may also benefit others.

    I would personally advise against drilling through the Amiga motherboard as it's multi-layered. (IE: Try...
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    You also never clarified if this problem...

    You also never clarified if this problem pertained to just Marble Madness or everything.


    Here is a small 68000 mouse routine I coded back in the day. Might be worth running it through Genam....
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    You overlooked the question "Was this an issue...

    You overlooked the question "Was this an issue before you modded the board?"

    Which was why I pointed you back to JP2 and JP7a - JOY0DAT (p-Processor) and the I/O data paths near GARY. (Solder...
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